INFO: Blitting Between DCs for Different Devices Is Unsupported

• Microsoft Win32 Software Development Kit (SDK)
• Microsoft Windows 2000

SUMMARY

Using a device-dependent blitting operation, such as BitBlt() or StretchBlt(), to transfer data from a DC supported by one device to a DC supported by another device is not supported. While blitting between different devices might work with some driver pairs, you cannot rely on it to work between all driver pairs, so you should avoid it. The most common problem scenario occurs when the code for displaying a memory bitmap uses StretchBlt() to display the image to a printer DC.

To avoid this problem, convert the memory bitmap from its device-dependent form into a device-independent form by using the function GetDIBits(). You can display The device-independent image to the second device by using either SetDIBits() or StretchDIBits().

MORE INFORMATION

For more information on how to convert between device-dependent bitmaps (DDBs) and device-independent bitmaps (DIBs), see the following KB article: For additional information , please click the article number below to view the article in the Microsoft Knowledge Base:

Q80080 HOWTO: Convert Between Device-Dependent Bitmaps and DIBs

Additional query words:

Keywords : kbBitmap kbGDI kbWinOS2000
Version : WINDOWS:
Platform : WINDOWS
Issue type : kbinfo