LineDDAProc

  VOID CALLBACK LineDDAFunc(X, Y, lpData)    
  int X; /* x-coordinate of point being evaluated */
  int Y; /* y-coordinate of point being evaluated */
  LPARAM lpData; /* address of application-supplied data */

The LineDDAProc function is an application defined callback function that processes coordinates from the LineDDA function.

Parameters

X

Specifies the x-coordinate of the current point.

Y

Specifies the y-coordinate of the current point.

lpData

Points to the application-supplied data.

Return Value

This function must return a nonzero value to continue enumeration; to stop enumeration, it must return zero.

Comments

LineDDAProc is a placeholder for the application-supplied function name. The actual name must be exported by including it in an EXPORTS statement in the application's module-definition file.

An application must register this function by passing its address to the LineDDA function.

See Also

LineDDA