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CDC Class
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CDC::TransparentBlt
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CDC::InvertRgn

Visual Studio 2012

Inverts the colors in the region specified by pRgn.

Copy 
BOOL InvertRgn( 
   CRgn* pRgn  
);
pRgn

Identifies the region to be inverted. The coordinates for the region are specified in logical units.

Nonzero if the function is successful; otherwise 0.

On monochrome displays, the function makes white pixels black and black pixels white. On color displays, the inversion depends on how the colors are generated for the display.

Header: afxwin.h

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