Displaying 1 result from an estimated 1 matches for "iocs_attach".
2011 May 09
1
Hey! GWLP_USERDATA is for the user, not for the OS !
Hi
In the definition of IOCS_Attach in atl_ax.c, a "this" handle is stored in the window user data with SetWindowLongPtr and the GWLP_USERDATA parameter. This is used when an ActiveX control is attached to a window.
The user data is for the user, not for the OS, and a weird interaction happens when a window that already us...