MainWindow 0 0 1441 859 MainWindow 0 0 800 800 810 0 610 500 10 10 191 480 Path1 20 40 83 29 Rectangle 20 80 83 29 Ellipse 20 120 83 29 Triangle 10 250 63 20 Coords: 10 270 170 200 true 10 230 160 16 1 200 100 Qt::Horizontal 10 210 63 20 Scale: 20 160 83 29 Cross 210 10 191 480 Path2 20 40 83 29 Rectangle 20 80 83 29 Ellipse 20 120 83 29 Triangle 10 250 63 20 Coords: 10 270 170 200 true 10 230 160 16 1 200 100 Qt::Horizontal 10 210 63 20 Scale: 20 160 83 29 Cross 410 10 191 480 Result 10 250 63 20 Coords: 10 270 170 200 true 20 120 83 29 Subtract 20 80 83 29 Intersect 20 40 83 29 Unite 0 0 1441 21 CustomButton QPushButton

mainwindow.h

BooleanButton QPushButton

mainwindow.h

CustomLabel QLabel

mainwindow.h

mousePress() label mousePress() MainWindow CheckMousePress() 249 274 561 276 CheckMousePress()