| void CALLBACK LineDDAProc(xPos, yPos, lpData) | |||||
| int xPos; | /* x-coordinate of current position | */ | |||
| int yPos; | /* y-coordinate of current position | */ | |||
| LPARAM lpData; | /* address of application-defined data | */ | |||
The LineDDAProc function is an application-defined callback function that processes coordinates from the LineDDA function.
xPos
Specifies the x-coordinate of the current point.
yPos
Specifies the y-coordinate of the current point.
lpData
Points to the application-defined data.
This function does not return a value.
An application must register this function by passing its address to the LineDDA function.
LineDDAProc is a placeholder for the application-defined function name. The actual name must be exported by including it in an EXPORTS statement in the application's module-definition file.