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CreateCompatibleBitmap info  Overview  Group

The CreateCompatibleBitmap function creates a bitmap compatible with the device that is associated with the specified device context.

HBITMAP CreateCompatibleBitmap(

    HDC hdc,

// handle to device context

    int nWidth,

// width of bitmap, in pixels

    int nHeight 

// height of bitmap, in pixels

   );

Parameters

hdc
Identifies a device context.
nWidth
Specifies the bitmap width, in pixels.
nHeight
Specifies the bitmap height, in pixels.

Return Values

If the function succeeds, the return value is a handle to the bitmap.

If the function fails, the return value is NULL. To get extended error information, call GetLastError.

Remarks

The color format of the bitmap created by the CreateCompatibleBitmap function matches the color format of the device identified by the hdc parameter. This bitmap can be selected into any memory device context that is compatible with the original device.

Because memory device contexts allow both color and monochrome bitmaps, the format of the bitmap returned by the CreateCompatibleBitmap function differs when the specified device context is a memory device context. However, a compatible bitmap that was created for a nonmemory device context always possesses the same color format and uses the same color palette as the specified device context.

If an application sets the nWidth or nHeight parameters to zero, CreateCompatibleBitmap returns the handle of a 1- by 1-pixel, monochrome bitmap.

If a DIB section, which is a bitmap created by the CreateDIBSection function, is selected into the device context identified by the hdc parameter, CreateCompatibleBitmap creates a DIB section.

When you no longer need the bitmap, call the DeleteObject function to delete it.

See Also

CreateDIBSection, DeleteObject, SelectObject 

See:

See also:


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