LineDDAProc info  Overview  Group

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
);

Parameters

X

Specifies the x-coordinate of the current point.

Y

Specifies the y-coordinate of the current point.

lpData

Points to the application-defined data.

Remarks

LineDDAProc is a placeholder for an application-defined function name.

An application registers a LineDDAProc function by passing its address to the LineDDA function.

See Also

LineDDA