Commonly used museum touch-screen electronic signature system, industrial control, similar to the drawing board, available on the PC mouse test, function: change the background image, change the brush size and color, save the image to the local hard drive.Write a program based on qt. 4.7.2 environment.

ele_sign2-build-desktop
.......................\back_image
.......................\..........\1.png
.......................\..........\2.png
.......................\..........\3.png
.......................\..........\4.png
.......................\..........\5.png
.......................\..........\6.png
.......................\..........\7.png
.......................\..........\8.png
.......................\debug
.......................\.....\dialog.o
.......................\.....\ele_sign2.exe
.......................\.....\form.o
.......................\.....\fullsign.o
.......................\.....\main.o
.......................\.....\moc_dialog.cpp
.......................\.....\moc_dialog.o
.......................\.....\moc_form.cpp
.......................\.....\moc_form.o
.......................\.....\moc_fullsign.cpp
.......................\.....\moc_fullsign.o
.......................\.....\moc_paintarea.cpp
.......................\.....\moc_paintarea.o
.......................\.....\moc_showsign.cpp
.......................\.....\moc_showsign.o
.......................\.....\paintarea.o
.......................\.....\qrc_resource.cpp
.......................\.....\qrc_resource.o
.......................\.....\showsign.o
.......................\Makefile
.......................\Makefile.Debug
.......................\Makefile.Release
.......................\mm
.......................\..\2015-01-07 15.01.25.png
.......................\object_script.ele_sign2.Debug
.......................\object_script.ele_sign2.Release
.......................\ui_dialog.h
.......................\ui_form.h
.......................\ui_fullsign.h
.......................\ui_showsign.h

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