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Bitmap drawing after remove the black background

Time:10-06

As shown in figure:
I have a frame first bitmap, shows the desktop image, on the basis of the bitmap to draw graphics:

First to draw a frame (the right-click menu)


To draw the second frame (right-click menu disappear)


How can a black background with the original impression left by the same?

CodePudding user response:

The second frame is not drawn, there will be a black part?

CodePudding user response:

Draw a frame of image (the right-click menu) before you save the original background
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