This function creates a bitmap compatible with the device associated with the specified device context.
At a Glance
| Header file: | Wingdi.h |
| Windows CE versions: | 1.0 and later |
Syntax
HBITMAP CreateCompatibleBitmap(HDC hdc, int nWidth, int nHeight);
Parameters
hdc
[in] Handle to a device context.
nWidth
[in] Specifies the bitmap width, in pixels.
nHeight
[in] Specifies the bitmap height, in pixels.
Return Values
A handle to the bitmap indicates success. NULL indicates failure. 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 to 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