A LineDDAProc function is an application-defined callback function that processes coordinates from the LineDDA function. A value of type LINEDDAPROC is a pointer to such a function.
VOID CALLBACK LineDDAProc(
int X, |
// x-coordinate of point being evaluated |
int Y, |
// y-coordinate of point being evaluated |
LPARAM lpData |
// address of application-defined data |
); |
LineDDAProc is a placeholder for an application-defined function name.
An application registers a LineDDAProc function by passing its address to the LineDDA function.
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