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CreateCompatibleDC info  Overview  Group

The CreateCompatibleDC function creates a memory device context (DC) compatible with the specified device.

HDC CreateCompatibleDC(

    HDC hdc 

// handle to memory device context

   );

Parameters

hdc
Identifies the device context. If this handle is NULL, the function creates a memory device context compatible with the application’s current screen.

Return Values

If the function succeeds, the return value is the handle to a memory device context.

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

Remarks

Before an application can use a memory device context for drawing operations, it must select a bitmap of the correct width and height into the device context. Once a bitmap has been selected, the device context can be used to prepare images that will be copied to the screen or printed.

The CreateCompatibleDC function can only be used with devices that support raster operations. An application can determine whether a device supports these operations by calling the GetDeviceCaps function.

When you no longer need the memory device context, call the DeleteDC function to delete it.

See Also

CreateCompatibleBitmap, DeleteDC, GetDeviceCaps 

See also:


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