The information in this topic pertains only to applications written in C++.

It is possible to use a multimonitor system rather than remote debugging in order to step through code while debugging a full-screen DirectDraw application.

You should use the primary monitor for your development environment and the secondary monitor for the DirectDraw output. Also, you need to change a registry setting through the DirectX property sheet in Control Panel. On the DirectDraw page, click Advanced Settings and select the Enable Multi-Monitor Debugging checkbox. This setting will prevent DirectDraw from minimizing your application when it loses focus.

Under Windows 98, you cannot step through code when a surface is locked. For more information, see Accessing Surface Memory Directly.