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_NOTbitmap
Perform a NOT operation for each pixel of a bitmap.

ObjBitmap _NOTbitmap (
ObjBitmap _bitmap_
I _dx_
I _dy_
I _width_
I _height_
)
Parameters

_bitmap_
any bitmap
_dx_
x destination coordinate
_dy_
y destination coordinate
_width_
width
_height_
height
Return value

same bitmap