Data type Range Default value
REG_DWORD Seconds 7


Specifies how long a DirectDraw application can keep a graphics device frame buffer locked when a dynamic mode change or security desktop change is pending.

When the time specified in this entry expires, the system forces the DirectDraw application to release the frame buffer. Forcing the release prevents the DirectDraw application from locking and thus not releasing its resources. However, forcing the release might cause an access violation error.

Value Meaning
0 DirectDraw acceleration is disabled and direct frame buffer access is not permitted. However, DirectDraw continues to run in emulation mode.
Seconds The number of seconds the system waits before forcing a DirectDraw application to release a frame buffer.