PROGRESSCALLBACKPROC is a callback function which your plugin needs to call during a call to ContentCompareFiles to inform the host program about the progress of the comparison.

 

 

typedef int (__stdcall *PROGRESSCALLBACKPROC)(int nextblockdata);

 

 

nextblockdata The number of bytes compared since the last call of PROGRESSCALLBACKPROC.

 

 

0 All OK, continue

other than 0 The user pressed the Cancel/Abort button