OPC client development a must-see, it is contains more than one source, synchronous, asynchronous communications are.

Packet : 25811233opc.rar filelist
Documents
Documents\opcda205_cust.doc
Documents\opcda20_auto.doc
Samples
Samples\Bin
Samples\Bin\OPCBar.ocx
Samples\Bin\opccomn_ps.dll
Samples\Bin\OPCDAAuto.dll
Samples\Bin\OPCJDADemoServer.exe
Samples\Bin\OPCPROXY.DLL
Samples\Bin\OpcServer.exe
Samples\Bin\OPCTrend.ocx
Samples\Bin\RegOPC.bat
Samples\Chap2
Samples\Chap2\Async
Samples\Chap2\Async\Form1.frm
Samples\Chap2\Async\Project1.vbp
Samples\Chap2\Sync
Samples\Chap2\Sync\Form1.frm
Samples\Chap2\Sync\Project1.vbp
Samples\Chap3
Samples\Chap3\dlgAbout.frm
Samples\Chap3\dlgAbout.frx
Samples\Chap3\OPCGeneral.pag
Samples\Chap3\OPCTrend.vbg
Samples\Chap3\OPCTrend.vbp
Samples\Chap3\OPCTrend_TGGeneral.pag
Samples\Chap3\TestTrendGraph.vbp
Samples\Chap3\TestTrendGraph_Form1.frm
Samples\Chap3\toolbox.bmp
Samples\Chap3\TrendGraph.ctl
Samples\Chap3\TrendGraph.ctx
Samples\Chap4
Samples\Chap4\ActiveX.xls
Samples\Chap4\BarMeter
Samples\Chap4\BarMeter\BarMeter.ctl
Samples\Chap4\BarMeter\BarMeter.ctx
Samples\Chap4\BarMeter\dlgAbout.frm
Samples\Chap4\BarMeter\dlgAbout.frx
Samples\Chap4\BarMeter\OPCBar.vbg
Samples\Chap4\BarMeter\OPCBar.vbp
Samples\Chap4\BarMeter\OPCBar_BMGeneral.pag
Samples\Chap4\BarMeter\OPCBar_BMGeneral.pgx
Samples\Chap4\BarMeter\OPCGeneral.pag
Samples\Chap4\BarMeter\TestBarMeter.vbp
Samples\Chap4\BarMeter\TestBarMeter_Form1.frm
Samples\Chap4\BarMeter\toolbox.bmp
Samples\Chap4\Demo.xls
Samples\Chap4\VBA.xls
Samples\Readme.txt

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