在控件picture1中放一张源图，在控件picture2上进行图形处理:

1.复制：picture2.paintpicture picture1.picture,0,0,picture2.width,picture.height,0,0, -

picture1.width,picture1.height

2.图形左右倒置：picture2.paintpicture picture1.picture,0,0,picture2.width,picture2.height,picture1.width,0, -

-picture1.width,picture1.height

3.图形上下倒置：picture2.paintpicture picture1.picture,0,0,picture2.width,picture2.height,0, picture1.height,-

picture1.width,- picture1.height