| BOOL InkReady(lpfn) | |||||
| LPFN lpfn; | /* pointer to callback function | */ | |||
The InkReady function notifies the display driver that the Recognition Context Manager (RC) is ready to ink a path drawn by the pen. The RC Manager for Pen computing calls this function when the user stroked a path using the pen. The display driver completes the inking by calling the callback function pointed to by the lpfn parameter. Depending on whether any other drawing operation is under way, the driver may call the callback function immediately or wait for the current drawing operation to complete.
Display drivers that support Pen computing must export the InkReady function.
lpfn
Points to the callback function that completes the inking.
The return value is TRUE if it completed the inking (called the callback function) immediately. Otherwise, it is FALSE to indicate that the display driver will complete the inking as soon as the current drawing operation is complete.
The export ordinal for this function is 600.
The InkReady function determines whether any other drawing operation is under way. If not, the function should call the callback function immediately, and then return TRUE. If a drawing operation is under way, InkReady must save the callback function address and return FALSE. The display driver is then responsible for calling the callback function as soon as the current drawing operation is complete.
The callback function pointed to by lpfn takes no parameters and returns no value.