GetWindowLongA

[Ove Kaaven]

On Fri, 31 Aug 2001, giorgian wrote:

> after debugging a bit, we found that it crashes because it obtains a 
> pointer by calling GetWindowLongA() with offset param = 0, and dies 
> after accessing it, since  GetWindowLongA returns 0.

GetWindowLong with offsets >= 0 is application-managed storage. The
application stores whatever it likes there using SetWindowLong. If the app
didn't store anything there yet (or stored a null pointer there), you
should figure out why it didn't.