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The
g_pGPE global variable is a pointer to the
DDGPE-based class that is created and implemented by your
driver. Your driver should define the g_pGPE global variable, but
it should not attempt to set it. It will be set up inside
DDGPE, and will be valid upon entering your
buildDDHALInfofunction.
You can use this global variable to perform DDGPEfunctions in your DirectDraw HAL implementation. Since it points to the DDGPE-derived class that you create in your driver, you can cast it to your custom derived class type and access any new functions you have created.
extern DDGPE*g_pGPE;
Last updated on Tuesday, July 13, 2004