在VB中用Paintpicture方法进行图形处理:  
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  
 
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