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Description: Drag and Drop Component Suite Version 4.1 Field test 5, released 16-dec-2001 ?1997-2001 Angus Johnson & Anders Melander http://www.melander.dk/delphi/dragdrop/ ------------------------------------------- Table of Contents: ------------------------------------------- 1. Supported platforms 2. Installation 3. Getting started 4. Known problems 5. Support and feedback 6. Bug reports 7. Upgrades and bug fixes 8. Missing in this release 9. New in version 4.x 10. TODO 11. Licence, Copyright and Disclaimer 12. Release history ------------------------------------------- 1. Supported platforms: ------------------------------------------- This release supports Delphi 4-6 and C++ Builder 4-5. Earlier versions of Delphi and C++ Builder will not be supported. If you need Delphi 3 or C++ Builder 3 support you will have to revert to version 3.7 of the Drag and Drop Component Suite. The library has been tested on NT4 service pack 5 and Windows 2000. Windows 95, 98, ME and XP should be supported, but has not been tested. Linux and Kylix are not supported. There are *NO* plans to port the library to Kylix. The drag and drop protocols available on Linux are too much of a mess at this time. ------------------------------------------- 2. Installation: ------------------------------------------- 1) Before you do anything else, read the "Known problems" section of this document. 2) Install the source into a directory of your choice. The files are installed into three directories: DragDrop DragDrop\Components DragDrop\Demo 3) Install and compile the appropriate design time package. The design time packages are located in the Components directory. Each version of Delphi and C++ Builder has its own package; DragDropD6.dpk for Delphi 6, DragDropD5.dpk for Delphi 5, DragDropC5.bpk for C++ Builder 5, etc. 4) Add the Drag and Drop Component Suite components directory to your library path. 5) Load the demo project group: demo\dragdrop_delphi.bpg for Delphi 5 and 6 demo\dragdrop_bcb4.bpg for C++ Builder 4 demo\dragdrop_bcb5.bpg for C++ Builder 5 The project group contains all the demo applications. 6) If your version of Delphi does not support text format DFM files (e.g. Delphi 4 doesn't), you will have to use the convert.exe utility supplied with Delphi to convert all the demo form files to binary format. A batch file, convert_forms_to delphi_4_format.bat, is supplied in the demo directory which automates the conversion process. The C++ Builder demo forms are distributed in binary format. 7) If upgrading from a previous version of the Drag and Drop Component Suite, please read the document "upgrading_to_v4.txt" before you begin working on your existing projects. Note about "Property does not exist" errors: Since all demos were developed with the latest version of Delphi, most of the demo forms probably contains references to properties that doesn't exist in earlier versions of Delphi and C++ Builder. Because of this you will get fatal run-time errors (e.g. "Error reading blahblahblah: Property does not exist.") if you attemt to run the demos without fixing this problem. Luckily it is very easy to make the forms work again; Just open the forms in the IDE, then select "Ignore All" when the IDE complains that this or that property doesn't exist and finally save the forms. ------------------------------------------- 3. Getting started: ------------------------------------------- It is recommended that you start by running each of the demo applications and then look through the demo source. Each demo application is supplied with a readme.txt file which briefly describes what the demo does and what features it uses. The demos should be run in the order in which they are listed in the supplied project group. Even if you have used previous versions of the Drag and Drop Component Suite it would be a good idea to have a quick look at the demos. The library has been completely rewritten and a lot of new features has been added. ------------------------------------------- 4. Known problems: ------------------------------------------- * The Shell Extension components does not support C++ Builder 4. For some strange reason the components causes a link error. * There appear to be sporadic problems compiling with C++ Builder 5. Several user have reported that they occasionally get one or more of the following compiler errors: [C++ Error] DragDropFile.hpp(178): E2450 Undefined structure '_FILEDESCRIPTORW' [C++ Error] DropSource.hpp(135): E2076 Overloadable operator expected I have not been able to reproduce these errors, but I believe the following work around will fix the problem: In the project options of *all* projects which uses these components, add the following conditional define: NO_WIN32_LEAN_AND_MEAN The define *must* be made in the project options. It is not sufficient to #define it in the source. If you manage to compile with C++ Builder (any version), I would very much like to know about it. * Delphi's and C++ Builder's HWND and THandle types are not compatible. For this reason it might be nescessary to cast C++ Builder's HWND values to Delphi's THandle type when a HWND is passed to a function. E.g.: if (DragDetectPlus(THandle(MyControl->Handle), Point(X, Y))) { ... } * Virtual File Stream formats can only be pasted from the clipboard with live data (i.e. FlushClipboard/OleFlushClipboard hasn't been called on the data source). This problem affects TFileContentsStreamOnDemandClipboardFormat and the VirtualFileStream demo. This is believed to be a bug in the Windows clipboard and a work around hasn't been found yet. * Asynchronous targets appears to be broken in the current release. * When TDropFileTarget.GetDataOnEnter is set to True, the component doesn't work with WinZip. Although the file names are received correctly by TDropFileTarget, WinZip doesn't extract the files and the files thus can't be copied/moved. This is caused by a quirk in WinZip; Apparently WinZip doesn't like IDataObject.GetData to be called before IDropTarget.Drop is called. ------------------------------------------- 5. Support and feedback: ------------------------------------------- Since these components are freeware they are also unsupported. You are welcome to ask for help via email, but I cannot guarantee that I will have time to help you or even reply to your mail. If you absolytely can't live without my help, you can alway try bribing me. You can also try asking for help in the Delphi newsgroups. Since the Drag and Drop Component Suite is in widespread use, there's a good chance another user can help you. I recommend the following newsgroups for issues regarding this library (or COM based Drag/Drop in general): borland.public.delphi.winapi borland.public.delphi.thirdparty-tools borland.public.delphi.oleautomation borland.public.cppbuilder.winapi borland.public.cppbuilder.thirdparty-tools Please choose the most appropiate newsgroup for your question. Do not cross post to them all. Before posting to the newsgroups, I suggest you try to search for an answer on the Google (DejaNews) search engine: http://groups.google.com Chances are that your question has been asked and answered before. If you have suggestions for improvements please mail them to me: anders@melander.dk Please include the words "Drag Drop" in the subject of any email regarding these components. ------------------------------------------- 6. Bug reports: ------------------------------------------- Bugs can either be reported at my home page (http://www.melander.dk/) or mailed directly to me: anders@melander.dk. When reporting a bug, please provide the following information: * The exact version of the Drag and Drop Component Suite you are using. * The exact version of Delphi or C++ Builder you are using. * The name and exact version of your operating system (e.g. NT4 SP5). * The exact version of the Internet Explorer installed on your system. If you can provide me with a minimal application which reproduces the problem, I can almost guarantee that I will be able to fix the problem in very short time. Please supply only the source files (pas, dfm, dpr, dof, res, etc.) and mail them as a single zip file. If I need a compiled version I will ask for it. If you feel you need to send me a screen shot, please send it in GIF or PNG format. If you mail a bug report to me, please include the words "Drag Drop" in the subject of your email. ------------------------------------------- 7. Upgrades and bug fixes: ------------------------------------------- Upgrades can be downloaded from my home page: http://www.melander.dk/delphi/dragdrop/ Bug fixes will also be posted to the above page. If you have registered for update notification via the installation program, you will receive email notification when a new release is available. You will not be notified of bug fixes. You can use the installation program to check for and download new releases and to check for known bugs. Note: If a new release is made available and you are not notified even though you registered for notification, you probably mistyped your email address during installation; About 10% of all registrations supply an invalid email address. ------------------------------------------- 8. Missing in this release: ------------------------------------------- * On-line help has not been updated and included in the kit due to late changes in the Delphi 6 help system and lack of time. If time permits, I will update the help and include it in a future release. ------------------------------------------- 9. New in version 4.x: ------------------------------------------- * Completely redesigned and rewritten. Previous versions of the Drag and Drop Component Suite used a very monolithic design and flat class hierachy which made it a bit cumbersome to extend the existing components or implement new ones. Version 4 is a complete rewrite and redesign, but still maintains compatibility with previous versions. The new V4 design basically separates the library into three layers: 1) Clipboard format I/O. 2) Data format conversion and storage. 3) COM Drag/Drop implementation and VCL component interface. The clipboard format layer is responsible for reading and writing data in different formats to and from an IDataObject interface. For each different clipboard format version 4 implements a specialized class which knows exactly how to interpret the clipboard format. For example the CF_TEXT (plain text) clipboard format is handled by the TTextClipboardFormat class and the CF_FILE (file names) clipboard format is handled by the TFileClipboardFormat class. The data format layer is primarily used to render the different clipboard formats to and from native Delphi data types. For example the TTextDataFormat class represents all text based clipboard formats (e.g. TTextClipboardFormat) as a string while the TFileDataFormat class represents a list of file names (e.g. TFileClipboardFormat) as a string list. The conversion between different data- and clipboard formats is handled by the same Assign/AssignTo mechanism as the VCLs TPersistent employes. This makes it possible to extend existing data formats with support for new clipboard formats without modification to the existing classes. The drag/drop component layer has several tasks; It implements the actual COM drag/drop functionality (i.e. it implements the IDropSource, IDropTarget and IDataObject interfaces (along with several other related interfaces)), it surfaces the data provided by the data format layer as component properties and it handles the interaction between the whole drag/drop framework and the users code. The suite provides a multitude of different components. Most are specialized for different drag/drop tasks (e.g. the TDropFileTarget and TDropFilesSource components for drag/drop of files), but some are either more generic, handling multiple unrelated formats, or simply helper components which are used to extend the existing components or build new ones. * Support for Delphi 6. Version 4.0 was primarily developed on Delphi 6 and then ported back to previous versions of Delphi and C++ Builder. * Support for Windows 2000 inter application drag images. On Windows platforms which supports it, drag images are now displayed when dragging between applications. Currently only Windows 2000 supports this feature. On platforms which doesn't support the feature, drag images are only displayed whithin the source application. * Support for Windows 2000 asynchronous data transfers. Asynchronous data tranfers allows the drop source and targets to perform slow transfers or to transfer large amounts of data without blocking the user interface while the data is being transfered. For platforms other than Windows 2000, the new TDropSourceThread class can be used to provide similar (but more limited) asynchronous data transfer capabilities. * Support for optimized and non-optimized move. When performing drag-move operations, it is now possible to specify if the target (optimized move) or the source (non-optimized move) is responsible for deleting the source files. * Support for delete-on-paste. When data is cut to the clipboard, it is now possible to defer the deletion of the source data until the target actually pastes the data. The source is notified by an event when the target pastes the data. * Extended clipboard support. All formats and components (both source and target) now support clipboard operations (copy/cut/paste) and the VCL clipboard object. * Support for shell drop handlers. The new TDropHandler component can be used to write drop handler shell extensions. A drop handler is a shell extension which is executed when a user drags and drops one or more files on a file associated wth your application. * Support for shell drag drop handlers. The new TDragDropHandler component can be used to write drag drop handler shell extensions. A drag drop handler is a shell extension which can extend the popup menu which is displayed when a user drag and drops files with the right mouse button. * Support for shell context menu handlers. The new TDropContextMenu component can be used to write context menu handler shell extensions. A context menu handler is a shell extension which can extend the popup menu which is displayed when a user right-clicks a file in the shell. * Drop sources can receive data from drop targets. It is now possible for drop targets to write data back to the drop source. This is used to support optimized-move, delete-on-paste and inter application drag images. * Automatic re-registration of targets when the target window handle is recreated. In previous versions, target controls would loose their ability to accept drops when their window handles were recreated by the VCL (e.g. when changing the border style or docking a form). This is no longer a problem. * Support for run-time definition of custom data formats. You can now add support for new clipboard formats without custom components. * Support for design-time extension of existing source and target components. Using the new TDataFormatAdapter component it is now possible to mix and match data formats and source and target components at design time. E.g. the TDropFileTarget component can be extended with URL support. * It is now possible to completely customize the target auto-scroll feature. Auto scroling can now be completely customized via the OnDragEnter, OnDragOver, OnGetDropEffect and OnScroll events and the public NoScrollZone and published AutoScroll properties. * Multiple target controls per drop target component. In previous versions you had to use one drop target component per target control. With version 4, each drop target component can handle any number of target controls. * It is now possible to specify the target control at design time. A published Target property has been added to the drop target components. * Includes 20 components: - TDropFileSource and TDropFileTarget Used for drag and drop of files. Supports recycle bin and PIDLs. - TDropTextSource and TDropTextTarget Used for drag and drop of text. - TDropBMPSource and TDropBMPTarget Used for drag and drop of bitmaps. - TDropPIDLSource and TDropPIDLTarget Used for drag and drop of PIDLs in native format. - TDropURLSource and TDropURLTarget Used for drag and drop of internet shortcuts. - TDropDummyTarget Used to provide drag/drop cursor feedback for controls which aren't registered as drop targets. - TDropComboTarget (new) Swiss-army-knife target. Accepts text, files, bitmaps, meta files, URLs and file contents. - TDropMetaFileTarget (new) Target which can accept meta files and enhanced meta files. - TDropImageTarget (new) Target which can accept bitmaps, DIBs, meta files and enhanced meta files. - TDragDropHandler (new) Used to implement Drag Drop Handler shell extensions. - TDropHandler (new) Used to implement Shell Drop Handler shell extensions. - TDragDropContext (new) Used to implement Shell Context Menu Handler shell extensions. - TDataFormatAdapter (new) Extends the standard source and target components with support for extra data formats. An alternative to TDropComboTarget. - TDropEmptySource and TDropEmptyTarget (new) Target and source components which doesn't support any formats, but can be extended with TDataFormatAdapter components. * Supports 27 standard clipboard formats: Text formats: - CF_TEXT (plain text) - CF_UNICODETEXT (Unicode text) - CF_OEMTEXT (Text in the OEM characterset) - CF_LOCALE (Locale specification) - 'Rich Text Format' (RTF text) - 'CSV' (Tabular spreadsheet text) File formats: - CF_HDROP (list of file names) - CF_FILEGROUPDESCRIPTOR, CF_FILEGROUPDESCRIPTORW and CF_FILECONTENTS (list of files and their attributes and content). - 'Shell IDList Array' (PIDLs) - 'FileName' and 'FileNameW' (single filename, used for 16 bit compatibility). - 'FileNameMap' and 'FileNameMapW' (used to rename files, usually when dragging from the recycle bin) Image formats: - CF_BITMAP (Windows bitmap) - CF_DIB (Device Independant Bitmap) - CF_METAFILEPICT (Windows MetaFile) - CF_ENHMETAFILE (Enhanced Metafile) - CF_PALETTE (Bitmap palette) Internet formats: - 'UniformResourceLocator' and 'UniformResourceLocatorW' (Internet shortcut) - 'Netscape Bookmark' (Netscape bookmark/URL) - 'Netscape Image Format' (Netscape image/URL) - '+//ISBN 1-887687-00-9::versit::PDI//vCard' (V-Card) - 'HTML Format' (HTML text) - 'Internet Message (rfc822/rfc1522)' (E-mail message in RFC822 format) Misc. formats: - CF_PREFERREDDROPEFFECT and CF_PASTESUCCEEDED (mostly used by clipboard) - CF_PERFORMEDDROPEFFECT and CF_LOGICALPERFORMEDDROPEFFECT (mostly used for optimized-move) - 'InShellDragLoop' (used by Windows shell) - 'TargetCLSID' (Mostly used when dragging to recycle-bin) * New source events: - OnGetData: Fired when the target requests data. - OnSetData: Fired when the target writes data back to the source. - OnPaste: Fired when the target pastes data which the source has placed on the clipboard. - OnAfterDrop: Fired after the drag/drop operation has completed. * New target events: - OnScroll: Fires when the target component is about to perform auto-scroll on the target control. - OnAcceptFormat: Fires when the target component needs to determine if it will accept a given data format. Only surfaced in the TDropComboTarget component. * 8 new demo applications, 19 in total. ------------------------------------------- 10. TODO (may or may not be implemented): ------------------------------------------- * Async target demo (with and without IAsyncOperation support). * Scrap file demo. * Native Outlook message format. * Structured storage support (IStorage encapsulation). ------------------------------------------- 11. Licence, Copyright and Disclaimer: ------------------------------------------- The Drag and Drop Component Suite is Copyright ?1997-2001 Angus Johnson and Anders Melander. All rights reserved. The software is copyrighted as noted above. It may be freely copied, modified, and redistributed, provided that the copyright notice(s) is preserved on all copies. The Drag and Drop Component Suite is freeware and we would like it to remain so. This means that it may not be bundled with commercial libraries or sold as shareware. You are welcome to use it in commercial and shareware applications providing you do not charge for the functionality provided by the Drag and Drop Component Suite. There is no warranty or other guarantee of fitness for this software, it is provided solely "as is". You are welcome to use the source to make your own modified components, and such modified components may be distributed by you or others if you include credits to the original components, and do not charge anything for your modified components. ------------------------------------------- 12. Version 4 release history: ------------------------------------------- 16-dec-2001 * Ported to C++ Builder 4. * Released for test as v4.1 FT5. 12-dec-2001 * Fixed C++ Builder name clash between TDropComboTarget.GetMetaFile and the GetMetaFile #define in wingdi.h 1-dec-2001 * The IAsyncOperation interface is now also declared as IAsyncOperation2 and all references to IAsyncOperation has been replaced with IAsyncOperation2. This was done to work around a bug in C++ Builder. Thanks to Jonathan Arnold for all his help with getting the components to work with C++ Builder. Without Jonathan's help version 4.1 would prabably have shipped witout C++ Builder support and certainly without any C++ Builder demos. * Demo applications for C++ Builder. The C++ Builder demos were contributed by Jonathan Arnold. 27-nov-2001 * TCustomDropTarget.Droptypes property renamed to DropTypes (notice the case). Thanks to Krystian Brazulewicz for spotting this. 24-nov-2001 * The GetURLFromString function in the DragDropInternet unit has been made public due to user request. 21-nov-2001 * Modified MakeHTML function to comply with Microsoft's description of the CF_HTML clipboard format. * Added MakeTextFromHTML function to convert CF_HTML data to plain HTML. Provides the reverse functionality of MakeHTML. * Added HTML support to TTextDataFormat class and TDropTextSource and TDropTextTarget components. * Fixed C++ Builder 5 problem with IAsyncOperation. * Released for test as v4.1 FT4. 10-nov-2001 * Added NetscapeDemo demo application. Demonstrates how to receive messages dropped from Netscape. This demo was sponsored by ThoughtShare Communications Inc. * Released for test as v4.1 FT3. 23-oct-2001 * Conversion priority of TURLDataFormat has been changed to give the File Group Descritor formats priority over the Internet Shortcut format. This resolves a problem where dropping an URL on the desktop would cause the desktop to assume that an Active Desktop item was to be created instead of an Internet Shortcut. Thanks to Allen Martin for reporting this problem. By luck this modification also happens to work around a bug in Mozilla and Netscape 6; Mozilla incorrectly supplies the UniformResourceLocator clipboard format in unicode format instead of ANSI format. Thanks to Florian Kusche for reporting this problem. * Added support for TFileGroupDescritorWClipboardFormat to TURLDataFormat. * Added declaration of FD_PROGRESSUI to DragDropFormats. * Added TURLWClipboardFormat which implements the "UniformResourceLocatorW" (a.k.a. CFSTR_INETURLW) clipboard format. Basically a Unicode version of CFSTR_SHELLURL/CFSTR_INETURL. The TURLWClipboardFormat class isn't used anywhere yet but will probably be supported by TURLDataFormat (and thus TDropURLTarget/TDropURLSource) in a later release. * Added experimental Shell Drag Image support. This relies on undodumented shell32.dll functions and probably won't be fully support before v4.2 (if ever). See InitShellDragImage in DropSource.pas. Thanks to Jim Kueneman for bringning these functions to my attention. 13-oct-2001 * TCustomDropSource.Destroy and TCustomDropMultiSource.Destroy changed to call FlushClipboard instead of EmptyClipboard. This means that clipboard contents will be preserved when the source application/component is terminated. * Added clipboard support to VirtualFileStream demo. * Modified VirtualFileStream demo to work around clipboard quirk with IStream medium. * Modified TCustomSimpleClipboardFormat to disable TYMED_ISTORAGE support by default. At present TYMED_ISTORAGE is only supported for drop targets and enabling it by default in TCustomSimpleClipboardFormat.Create caused a lot of clipboard operations (e.g. copy/paste of text) to fail. Thanks to Michael J Marshall for bringing this problem to my attention. * Modified TCustomSimpleClipboardFormat to read from the the TYMED_ISTREAM medium in small (1Mb) chunks and via a global memory buffer. This has resultet in a huge performance gain (several orders of magnitude) when transferring large amounts of data via the TYMED_ISTREAM medium. 3-oct-2001 * Fixed bug in TCustomDropSource.SetImageIndex. Thanks to Maxim Abramovich for spotting this. * Added missing default property values to TCustomDropSource. Thanks to Maxim Abramovich for spotting this. * DragDrop.pas and DragDropContext.pas updated for Delphi 4. * Reimplemented utility to convert DFM form files from Delphi 5/6 test format to Delphi 4/5 binary format. * Improved unregistration of Shell Extensions. Shell extension now completely (and safely) remove their registry entries when unregistered. * Deprecated support for C++ Builder 3. * Released for test as v4.1 FT2. 25-sep-2001 * Rewritten ContextMenuHandlerShellExt demo. The demo is now actually a quite useful utility which can be used to register and unregister ActiveX controls, COM servers and type libraries. It includes the same functionality as Borland's TRegSvr utility. 20-sep-2001 * Added support for cascading menus, ownerdraw and menu bitmaps to TDropContextMenu component. * Modified TFileContentsStreamOnDemandClipboardFormat to handle invalid parameter value (FormatEtcIn.lindex) when data is copied to clipboard. This works around an apparent bug in the Windows clipboard. Thanks to Steve Moss for reporting this problem. * Modified TEnumFormatEtc class to not enumerate empty clipboard formats. Thanks to Steve Moss for this improvement. 1-sep-2001 * Introduced TCustomDropTarget.AutoRegister property. The AutoRegister property is used to control if drop target controls should be automatically unregistered and reregistered when their window handle is recreated by the VCL. If AutoRegister is True, which is the default, then automatic reregistration will be performed. This property was introduced because the hidden child control, which is used to monitor the drop target control's window handle, can have unwanted side effects on the drop target control (e.g. TToolBar). * Deprecated support for Delphi 3. 22-jun-2001 * Redesigned TTextDataFormat to handle RTF, Unicode, CSV and OEM text without conversion. Moved TTextDataFormat class to DragDropText unit. Added support for TLocaleClipboardFormat. * Surfaced new text formats as properties in TDropTextSource and TDropTextTarget. Previous versions of the Text source and target components represented all supported text formats via the Text property. In order to enable users to handle the different text formats independantly, the text source and target components now has individual properties for ANSI, OEM, Unicode and RTF text formats. The text target component can automatically synthesize some of the formats from the others (e.g. OEM text from ANSI text), but applications which previously relied on all formats being represented by the Text property will have to be modified to handle the new properties. * Added work around for problem where TToolBar as a drop target would display the invisible target proxy window. * Fixed wide string bug in WriteFilesToZeroList. Thanks to Werner Lehmann for spotting this. 15-jun-2001 * Added work-around for Outlook Express IDataObject.QueryGetData quirk. 3-jun-2001 * Ported to C++ Builder 4 and 5. * Added missing DragDropDesign.pas unit to design time packages. * First attempt at C++ Builder 3 port.... failed. * Improved handling of oversized File Group Descriptor data. * Added support for IStorage medium to TFileContentsStreamClipboardFormat. This allows the TDropComboTarget component to accept messages dropped from Microsoft Outlook. This work was sponsored by ThoughtShare Communications Inc. 23-may-2001 * Ported to Delphi 4. * First attempt at C++ Builder 5 port.... failed. 18-may-2001 * Released as version 4.0. Note: Version 4.0 was released exclusively on the Delphi 6 Companion CD. * ContextMenuDemo and DropHandlerDemo application has been partially rewritten and renamed. ContextMenuDemo is now named ContextMenuHandlerShellExt. DropHandlerDemo is now named DropHandlerShellExt. * TDropContextMenu component has been rewitten. The TDropContextMenu now implements a context menu handler shell extension. In previous releases it implemented a drag drop handler shell extension. * The DragDropHandler.pas unit which implements the TDropHandler component has been renamed to DropHandler.pas. * Added new TDragDropHandler component. The new component, which lives in the DragDropHandler unit, is used to implement drag drop handler shell extensions. * Added DragDropHandlerShellExt demo application. * Removed misc incomplete demos from kit. * Fixed minor problem in VirtualFileStream demo which caused drops from the VirtualFile demo not to transfer content correctly. 11-may-2001 * Converted all demo forms to text DFM format. This has been nescessary to maintain compatibility between all supported versions of Delphi. * Fixed a bug in GetPIDLsFromFilenames which caused drag-link of files (dtLink with TDropFileSource) not to work. * Added readme.txt files to some demo applications. * Added missing tlb and C++ Builder files to install kit. * Released as FT4. 6-may-2001 * Added missing dfm files to install kit. * Tested with Delphi 5. Fixed Delphi 5 compatibility error in main.dfm of DragDropDemo. * Removed misc compiler warnings. * The AsyncTransferTarget and OleObjectDemo demos were incomplete and has been removed from the kit for the V4.0 release. The demos will be included in a future release. * Released as FT3. 3-may-2001 * Added missing dpr and bpg files to install kit. * Updated readme.txt with regard to lack of C++ Builder demos. * Released as FT2. 29-apr-2001 * Cleaned up for release. * Released as FT1. 23-feb-2001 * Modified TCustomDropTarget.FindTarget to handle overlapping targets (e.g. different targets at the same position but on different pages of a page control or notebook). Thanks to Roger Moe for spotting this problem. 13-feb-2001 * Renamed AsyncTransfer2 demo to AsyncTransferSource. * Added AsyncTransferTarget demo. * Replaced TChart in AsyncTransfer2 demo with homegrown pie-chart-thing. * Modified all IStream based target formats to support incremental transfer. * URW533 problem has finally been fixed. The cause of the problem, which is a bug in Delphi, was found by Stefan Hoffmeister. * Fixed free notification for TDropContextmenu and TDataFormatAdapter. 27-dec-2000 * Moved TVirtualFileStreamDataFormat and TFileContentsStreamOnDemandClipboardFormat classes from VirtualFileStream demo to DragDropFormats unit. * Added TClipboardFormat.DataFormat and TClipboardFormats.DataFormat property. * Added TDropEmptySource and TDropEmptyTarget components. These are basically do-nothing components for use with TDataFormatAdapter. * Rewritten AsyncTransfer2 demo. The demo now uses TDropEmptySource, TDataFormatAdapter and TVirtualFileStreamDataFormat to transfer 10Mb of data with progress feedback. * Rewritten VirtualFileStream demo. The demo now uses TDropEmptySource, TDropEmptyTarget, TDataFormatAdapter and TVirtualFileStreamDataFormat. * Fixed memory leak in TVirtualFileStreamDataFormat. This leak only affected the old VirtualFileStream demo. * Added support for full File Descriptor attribute set to TVirtualFileStreamDataFormat. It is now possible to specify file attributes such as file size and last modified time in addition to the filename. I plan to add similar features to the other classes which uses FileDescriptors (e.g. TDropFileSource and TDropFileTarget). 21-dec-2000 * Ported to Delphi 4. * Added workaround for design bug in either Explorer or the clipboard. Explorer and the clipboard's requirements to the cursor position of an IStream object are incompatible. Explorer requires the cursor to be at the beginning of stream and the clipboard requires the cursor to be at the end of stream. 15-dec-2000 * Fixed URW533 problem. I'll leave the description of the workaround in here for now in case the problem resurfaces. 11-dec-2000 * Fixed bug in filename to PIDL conversion (GetPIDLsFromFilenames) which affected TDropFileTarget. Thanks to Poul Halgaard J鴕gensen for reporting this. 4-dec-2000 * Added THTMLDataFormat. * Fixed a a few small bugs which affected clipboard operations. * Added {$ALIGN ON} to dragdrop.inc. Apparently COM drag/drop requires some structures to be word alligned. This change fixes problems where some of the demos would suddenly stop working. * The URW533 problem has resurfaced. See the "Known problems" section below. 13-nov-2000 * TCopyPasteDataFormat has been renamed to TFeedbackDataFormat. * Added support for the Windows 2000 "TargetCLSID" format with the TTargetCLSIDClipboardFormat class and the TCustomDropSource.TargetCLSID property. * Added support for the "Logical Performed DropEffect" format with the TLogicalPerformedDropEffectClipboardFormat class. The class is used internally by TCustomDropSource. 30-oct-2000 * Added ContextMenu demo and TDropContextMenu component. Demonstrates how to customize the context menu which is displayed when a file is dragged with the right mouse button and dropped in the shell. * Added TCustomDataFormat.GetData. With the introduction of the GetData method, Data Format classes can now be used stand-alone to extract data from an IDataObject. 20-oct-2000 * Added VirtualFileStream demo. Demonstrates how to use the "File Contents" and "File Group Descritor" clipboard formats to drag and drop virtual files (files which doesn't exist physically) and transfer the data on-demand via a stream. 14-oct-2000 * Added special drop target registration of TCustomRichEdit controls. TCustomRichEdit needs special attention because it implements its own drop target handling which prevents it to work with these components. TCustomDropTarget now disables a rich edit control's built in drag/drop handling when the control is registered as a drop target. * Added work around for Windows bug where IDropTarget.DragOver is called regardless that the drop has been rejected in IDropTarget.DragEnter. 12-oct-2000 * Fixed bug that caused docking to interfere with drop targets. Thanks to G. Bradley MacDonald for bringing the problem to my attention. 30-sep-2000 * The DataFormats property has been made public in the TCustomDropMultiTarget class. * Added VirtualFile demo. Demonstrates how to use the TFileContentsClipboardFormat and TFileGroupDescritorClipboardFormat formats to drag and drop a virtual file (a file which doesn't exist physically). 28-sep-2000 * Improved drop source detection of optimized move. When an optimized move is performed by a drop target, the drop source's Execute method will now return drDropMove. Previously drCancel was returned. The OnAfterDrop event must still be used to determine if a move operation were optimized or not. * Modified TCustomDropTarget.GetPreferredDropEffect to get data from the current IDataObject instead of from the VCL global clipboard. 18-sep-2000 * Fixed bug in DropComboTarget caused by the 17-sep-2000 TStreams modification. 17-sep-2000 * Added AsyncTransfer2 demo to demonstrate use of TDropSourceThread. * Renamed TStreams class to TStreamList. 29-aug-2000 * Added TDropSourceThread. TDropSourceThread is an alternative to Windows 2000 asynchronous data transfers but also works on other platforms than Windows 2000. TDropSourceThread is based on code contributed by E. J. Molendijk. 24-aug-2000 * Added support for Windows 2000 asynchronous data transfers. Added IAsyncOperation implementation to TCustomDropSource. Added TCustomDropSource.AllowAsyncTransfer and AsyncTransfer properties. 5-aug-2000 * Added work around for URW533 compiler bug. * Fixed D4 and D5 packages and updated a few demos. Obsolete DropMultiTarget were still referenced a few places. * Documented work around for C++ Builder 5 compiler error. See the Known Problems section later in this document for more information. 2-aug-2000 * The package files provided in the kit is now design-time only packages. In previous versions, the packages could be used both at design- and run-time. The change was nescessary because the package now contains design-time code. * Added possible work around for suspected C++ Builder bug. The bug manifests itself as a "Overloadable operator expected" compile time error. See the "Known problems" section of this document. * Rewrote CustomFormat1 demo. * Added CustomFormat2 demo. * TDataDirection members has been renamed from ddGet and ddSet to ddRead and ddWrite. * All File Group Descritor and File Contents clipboard formats has been moved from the DragDropFile unit to the DragDropFormats unit. * File Contents support has been added to TTextDataFormat. The support is currently only enabled for drop sources. * Renamed TDropMultiTarget component to TDropComboTarget. Note: This will break applications which uses the TDropMultiTarget component. You can use the following technique to port application from previous releases: 1) Install the new components. 2) Repeat step 3-8 for all units which uses the TDropMultiTarget component. 3) Make a backup of the unit (both pas and dfm file) just in case... 4) Open the unit in the IDE. 5) In the .pas file, replace all occurances of "TDropMultiTarget" with "TDropComboTarget". 6) View the form as text. 7) Replace all occurances of "TDropMultiTarget" with "TDropComboTarget". 8) Save the unit. * Renamed a lot of demo files and directories. * Added work around for yet another bug in TStreamAdapter. * Added TCustomStringClipboardFormat as new base class for TCustomTextClipboardFormat. This changes the class hierachy a bit for classes which previously descended from TCustomTextClipboardFormat: All formats which needs zero termination now descend from TCustomTextClipboardFormat and the rest descend from TCustomStringClipboardFormat. Added TrimZeroes property. Fixed zero termination bug in TCustomTextClipboardFormat and generally improved handling of zero terminated strings. Disabled zero trim in TCustomStringClipboardFormat and enabled it in TCustomTextClipboardFormat. 23-jul-2000 * Improved handling of long file names in DropHandler demo. Added work around for ParamStr bug. * Added TDataFormatAdapter component and adapter demo. TDataFormatAdapter is used to extend the existing source and target components with additional data format support without modifying them. It can be considered an dynamic alternative to the current TDropMultiTarget component. 17-jul-2000 * TDropHandler component and DropHandler demo fully functional. 14-jul-2000 * Tested with C++ Builder 5. * Fixed sporadic integer overflow bug in DragDetectPlus function. * Added shell drop handler support with TDropHandler component. This is a work in progress and is not yet functional. 1-jul-2000 * Tested with Delphi 4. * Support for Windows 2000 inter application drag images. * TRawClipboardFormat and TRawDataFormat classes for support of arbitrary unknown clipboard formats. The classes are used internally in the TCustomDropSource.SetData method to support W2K drag images.
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Description: 目录下的【名单.txt】文件（重要），里面记录参选人员，可以自己添加。格式参照里面。
注：已经有提供的人员全部名字。
程序操作：
运行程序后，上面有点击鼠标右键，有菜单。
快捷方式：
【F5】：表示混选，男女都参加，可以重复。【默认情况】
【F6】：同上，只是不可重复。
【F7】：只中，女 中选。
【F8】：只中，男 中选。
单击【空白键】，开始或暂停。-[Directory list. Txt] document (important), which records the election staff can add their own. Format inside the light. Note: The staff has provided the full name. Process steps: run the program, the above has the right mouse button click, the menu has. Shortcut: [F5]: express mixed election, both men and women take part in, you can repeat. By default [] [F6]: ditto, but not repeat yourself. [F7]: only female selected. [F8]: only, the man selected. Click] [blank button to start or pause.
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Size: 612352 |
Author: 实姓名 |
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Description: The Lite Evaluation/Demonstration Kit is intended to illustrate use of the
AN3042. The AN3042 is compliant to the PCI 2.1 Local Bus specification.
Included in the kit is a PCI add-in card, Windows drivers, demonstration
applications, and documentation of the hardware and software provided. The
microprocessor used on the PCI add-in card is the Motorola MPC860. The
applications themselves serve as documentation on how to interface with the
drivers, and also may be used to test the AN3042 on the user s prototype board.
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Size: 4328448 |
Author: szliu |
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Description: use Add-in Express 2007 for VCL, Premium
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Size: 800768 |
Author: kien |
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Description: fcdigg beta 0.1 更新日志 2009-8-1 10:40:00
1.开发环境:net framework 3.5 sql 2005 express 直接使用vs 2008 打开即可调试
2.栏目可以无限添加
3.新闻采用fck编辑器
4.支持友情链接
5.支持顶digg
6.支持tags标签
7.支持会员之间短信
8.添加删除好友
9.简单的个人blog页面
10.支持简单辅助工具 删除指定目录，执行sql语句
11.支持文章内容采集
12.支持文章评论
13.支持文章收藏
14.修改会员个人信息
15.修改会员头像
App_Data下为Sql2005数据库（不用附加可以直接使用）
管理地址：admin
默认帐号/密码：51aspx/51aspx-Log fcdigg beta 0.1 update 2009-8-1 10:40:00 1. Development Environment: net framework 3.5 sql 2005 express used directly to debug vs 2008 to open 2. Add 3 columns can be unlimited. news using fck editor 4. support Links 5. to support the top of digg 6. to support the tags tab 7. to support the messaging between the members 8. Add to delete friends 9. simple personal blog page 10. in support of a simple tool to delete the specified directory, the implementation of sql statement 11. support content Collection 12. in support of the article reviews 13. to support the collection of 14 articles. to amend the personal information of 15 members. App_Data modified head for Member Sql2005 database (no additional direct access) Management Address: admin default account/password: 51aspx/51aspx
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Size: 3043328 |
Author: 邱柯皓 |
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Description: 一款留言管理系统，可以发表日志，管理日志，添加，浏览，删粗等操作。
1. 导入项目。
2. 在SQLyog中运行board.sql文件。
3. 在jdbc文件中修改root用户的密码。
4. 部署，运行Tomcat。
5. 在浏览器中访问：http://localhost:8080/MyMessageBoard_Servlet_Jsp
管理员登录用户名和密码：admin admin
访客登录用户名和密码：stormynight poby0007
开发平台：myecpliase，tomcat，mysql
-A message management system that can express the log, managing the log, add, browse, delete and other operations of crude. 1. Into the project. 2. SQLyog run board.sql file. 3. Jdbc file modify root user' s password. 4. To deploy, run Tomcat. 5. In a browser to visit: http://localhost:8080/MyMessageBoard_Servlet_Jsp administrator login user name and password: admin admin user name and password login visitors: stormynight poby0007 development platform: myecpliase, tomcat, mysql
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Size: 1061888 |
Author: 马明 |
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Description: 1.0
本程序演示了如何使用编辑器在运行期设置表格的一些常用参数
需要使用到Ehlib控件,最好使用3.6版本,旧版本也适用!
1.1
ColEditor 更易于使用了,BUG基本排除!
1.2
增加了智能过滤功能,对任意一DATASET都可以!此功能参考QLFilter,在此表示感谢!
以后会陆续增加一些MIS开发的常用功能组件或函数,请大家多多关注.
对了,几个按钮的ICON我暂时没有,没放上去丑了点,请大家自已加上去了!-1.0 program demonstrates how to use the editor to set the table in the running of some common parameters required to Ehlib control, it is best to use 3.6 version, the old version also apply! 1.1 ColEditor easier to use, BUG basic rule! 1.2 increase in intelligence filtering, for any one DATASET can! this function reference QLFilter, to express my gratitude! will continue to increase after a number of functional components commonly used in MIS development or function, please pay attention on. Yes, I do a few buttons ICON No, do not put up ugly a point, please add yourself to it!
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Size: 625664 |
Author: yinet1876 |
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Description: Sample for add-in express office
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Size: 10240 |
Author: kien |
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Description: Add-in Express 2007 for VCL, Premium up delphi 2010 test win 7
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Size: 26009600 |
Author: kien |
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Description: 管理员：可以自行添加、修改和删除部门，部门经理，员工等信息。
对公司员工所跟进的客户进行最高权限的管理。如对员工客户锁定，放权等。
部门主管：对该部门下员工进行网上管理，可查看员工的工作日志情况，留言，评语等。
员工的日志可做为月绩考核做参考。
系统员工：可对自己的客户进行管理，如搜索，添加，删除等操作。
对自己客户的跟进做记录，整理，分类，
可对客户按公司名称查找，公司联系人查询，甚至是公司地址的模糊查询
这比起老板让我们手抄的好。
员工在系统里面，可以在经验交流区发表自己的想法，经验。
网址链接：该功能主要是为员工提供常用到的网址-Administrator: can add, modify and delete departments, department managers, employees and other information.
Employees follow the company s top clients in the management of permissions. If employee customer lock, decentralization and so on.
Department heads: the department staff under the line management of staff can view the log case, comments, reviews and so on.
Employee performance appraisal on the log can be used as a reference.
System Staff: Customers can manage their own, such as search, add, delete and other operations.
Customers to do their own follow-up record, collate, classify,
Customers can search by company name, company contact information, business address and even fuzzy query
Let us hand-written than the owner of this good.
Staff in the system which, in the area to express their experience exchange ideas, experiences.
Website Links: This feature is mainly used to provide staff to the site
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Size: 610304 |
Author: david |
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Description: 模板化制作，修改更加简单。后台登陆地址：/admin/login.asp 帐号密码都是admin 后台说明如下站点配置管理：可修改站点名称公司联系方式和版权信息等。首页幻灯管理：可修改首页幻灯，共计5个，自由修改。频道分类管理：自由设置网站分类，使网站扩展性能更强。企业信息管理：自由增加单页面，自由调用。信息发布管理：可以添加修改删除各种产品信息，新闻信息等。客户留言管理：留言增加是否审核功能，增加回复功能。前台发表和显示留言列 表。友情链接管理：增加文字或图片链接、按文字或图片分类管理。管理帐号管理：增加修改管理帐号密码。 -Template of production, changes easier. Manage Address:/admin/login.asp username and password are admin site configuration management background as follows: Name of the company to modify the site contact and copyright information. Home Slide management: to modify the home page slide, a total of 5, free to modify. Channel Category Management: set free classified site, to make the site more scalability. Enterprise Information Management: free to add a single page, free calls. Information dissemination and management: You can add modify delete all kinds of product information, news and information. Message management: the increase in auditing a message to increase response capabilities. Outlook express and display a message list. Link management: add text or image link, text or images by category management. Management Account management: increased change management account password.
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Size: 6650880 |
Author: chenlidan |
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Description: 一个简单的人才招聘管理系统、有个人、企业会员注册功能，可以在线求职和信息发布，为NIIT学生作品。采用面向对象开发，非常简单
本地必须装有SQL Server Express 2005 或者 SQL Server 2005其他版本（App_data下为SQL数据库文件）
修改Web.config中数据库连接字符串
<add key="strConnection" value="Data Source=.\SQLEXPRESS AttachDbFilename=|DataDirectory|\hr_Data.MDF Trusted_Connection=True User Instance=True"/>
修改Web.config中的字符串，可以修改系统管理员用户设置
<add key="Manager" value="mfq" />
默认管理员： 用户名 mfq 密码 mfq-A simple management system for recruitment, personal, corporate member registration function, online job search and information dissemination for NIIT student work. Object-oriented development, is very simple to be equipped with a local SQL Server Express 2005 or other versions of SQL Server 2005 (App_data under the SQL database files) to modify the database connection string in Web.config <add key="strConnection" value="Data Source=.\SQLEXPRESS AttachDbFilename=|DataDirectory|\hr_Data.MDF Trusted_Connection=True User Instance=True"/> Modify the Web.config in the string, the system administrator can modify user settings <add key="Manager" value="mfq" /> Default administrator: user name password mfq mfq
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Size: 1115136 |
Author: 林枫 |
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Description: 最全的图书管理系统。NET三层架构实现。资料包括： 1.源码 2.开题报告 3.验收展示PPT 4.数据库文件 5.程序截图 6.论文 开发工具：Visual Studio 2008+Server 2005 Express Edition 实现功能： 1.用户登录，包括读者、操作员和管理员三种身份 2、修改密码 3、添加用户 4、添加图书 5、修改用户信息 6、修改图书信息 7、借阅图书 8、过期图书提示 9、归还图书 10、读者所借图书列表 11、借阅历史查询 12、图书查询功能-Of the most books management system management system. NET three layers framework implementation. Material include: 1. The source code 2. Bernal 3. Acceptance show PPT 4. The database file 5. Program screenshots 6. Paper development tools: Visual Studio 2008+ Server 2005 Express Edition function: 1. The user logs in, including the readers, the operator and administrator three identity 2, modify the password 3, add user 4, add, modify user information book 5 6, modify the books information 7, 8, outdated books borrowing books, return the book suggests 9 10, which the reader borrow books list 11, reading history, book search function 12 inquires
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Size: 19256320 |
Author: 郭小雁 |
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Description: Retail Management System is a retail store management program developed in Java. It uses Oracle Express as its back end to store the data. The user can add products, create invoice and issue bills to the customers maintaining updated stock status.
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Size: 1874944 |
Author: acesagar |
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Description: 扑克牌加减乘除游戏,是一种集技巧性和运气性于一体的扑克牌游戏。
现实中可以单人玩,也可以不定人数对抗,用若干副扑克牌去掉王即可游戏,推荐用一副牌双人对抗,乐趣无穷。
本程序利用Card类数组模拟扑克牌,定义3个数组分别表示玩家手中的牌，电脑手中的牌和底牌，用srand((unsigned)time(NULL))产生随机数字，将底牌数组中随机的一项从底牌中移动到其他的数组中，模拟从洗好底牌中抓牌。表示出牌。
单人练习模式中，首先记下一个 1到13之间的随机数字,然后玩家抓牌,当手中的牌的点数恰与记下的随机数字相等,或用手中有的任意两张牌,通过加减乘除四则运算可以凑出该随机数字相等的点数,则停止抓牌并将这一张或两张出出去,随即记下一个新的随机数字,开始下一轮,直道手中的全部牌出完,游戏结束。-Add, subtract, multiply and divide the game of poker, is a set of skill and luck in one of the poker game.
Reality can play single, can also be set by the number of combat, with a number of Poker King can remove the game, recommend using a deck of cards double confrontation, fun.
This procedure using Card array of simulated playing cards, to define a 3 array of said game player cards, computer cards and cards, using srand ( ( unsigned ) time ( NULL ) ) to produce random numbers, will hand in random array a from the hand moves to the other array, simulated from the laundry hand draw. Express card.
Single practice mode, the first note of a random number between1 to13, and then the game player to draw a card, when the hand points exactly and note down the random numbers are equal, or have any two cards, add, subtract, multiply and divide by four operations can make the random number equal points, then stop to draw a card and the card or two cards out, then write down a new random numbe
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Size: 15360 |
Author: 霍佳骥 |
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Description: C#编写的GeoTiff程序，程序中内容完整，经过调试，可作为研究地学人员的参考资料-The objectives of the reader are to understand how to add the raster layer to the map control, how to manipulate the raster symbology, how to get the raster information, and how to join the cursor to the location on raster. As usual, my tools pack includes MapWinGIS.ocx, which is an ActiveX control that can be used in any language that supports ActiveX (e.g., C#, VB, Microsoft Access, Microsoft PowerPoint, … ). MapWinGIS.ocx is Open Source, and you can download it free of charge under the MPL license. All code examples and screenshots in this article are based on the Microsoft Visual C# 2008 Professional Edition, but the reader can use Microsoft Visual C# Express Edition to get the same results.
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Size: 23552 |
Author: haoyubao |
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Description: 一款IE辅助的下载插件，运行安装程序后即可将本功能添加至IE。当然，源代码完全可以再次开发、修改和再编译。源码主要涉及编码转换、网络接口相关技术操作，其实这下载地址的编码转换是很简单的，用的就是Base64网址编码转换。不同的是各自加了不同的字符。迅雷就在地址前后分别加上“AA”和“ZZ”，然后进行Base64编码，‘快车是在地址前后分别加上了“[FLASHGET]”，然后Base64编码……
-Download a IE auxiliary plug-in, run the installation program will add this functionality to IE. Of course, the source code can re-develop, modify and re-compile. Source mainly involves transcoding, network interface technology operations, in fact, is very simple Download transcoding, encoding conversion is Base64 URL. Different, each adding a different character. Thunder in the address before and after, respectively, plus the " AA" and " ZZ" , then Base64 encoding, ' Express plus " FLASHGET], respectively, before and after in the address, and then Base64 encoded ...
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Size: 3361792 |
Author: syj |
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Description: 通过使用c# VS2010表达你可以添加新单词每天你学到了新的写盒子并单击“添加新单词数据库”按钮。当你发送表单最小化点击“发送到系统托盘”按钮程序继续运行在系统托盘中,给随机调整时期气球消息什么由你选择…你可以带回形式的双点击系统托盘-By using c# VS2010 express you can add new words every day you learn a new writing box and click the " Add new word database" button. When you send the form minimize click the " Send to tray" button to program continues to run in the system tray balloon message to the random adjustment period chosen by you ... what you can bring back in the form of double-clicking the system tray
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Size: 219136 |
Author: 七里香 |
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Description: Add-in Express VCL version 7.5.1217 - component library for Office Application (office 2000 to 2013)
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Size: 13236224 |
Author: Luiz Claudio |
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Description: dd-in Express Ltd. is a privately held company located in Homel, Belarus. Established in 1998, Add-in Express is the pioneer of tools and solutions in the Microsoft Office integration industry. If you need to customize applications the Office suite with COM add-ins, smart tags, RTD servers, Excel automation add-ins and XLL add-ins, you are welcome to use our products written for .net and VCL (Delphi). We also offer a component that allows deep customization of Internet Explorer.-dd-in Express Ltd. is a privately held company located in Homel, Belarus. Established in 1998, Add-in Express is the pioneer of tools and solutions in the Microsoft Office integration industry. If you need to customize applications the Office suite with COM add-ins, smart tags, RTD servers, Excel automation add-ins and XLL add-ins, you are welcome to use our products written for .net and VCL (Delphi). We also offer a component that allows deep customization of Internet Explorer.
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Size: 1583104 |
Author: wjg233 |
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