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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 

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