InvertRgn function (wingdi.h)

Article
02/22/2024

The InvertRgn function inverts the colors in the specified region.

Syntax

BOOL InvertRgn(
  [in] HDC  hdc,
  [in] HRGN hrgn
);

Parameters

[in] hdc

Handle to the device context.

[in] hrgn

Handle to the region for which colors are inverted. The region's coordinates are presumed to be logical coordinates.

Return value

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero.

Remarks

On monochrome screens, the InvertRgn function makes white pixels black and black pixels white. On color screens, this inversion is dependent on the type of technology used to generate the colors for the screen.

Examples

For an example, see Using Brushes.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Target Platform	Windows
Header	wingdi.h (include Windows.h)
Library	Gdi32.lib
DLL	Gdi32.dll