CWindow::SetWindowLong
Sets a 32-bit value at a specified offset into the extra window memory.
LONG SetWindowLong(
int nIndex,
LONG dwNewLong
) throw();
Remarks
See SetWindowLong in the Windows SDK.
Note
To write code that is compatible with both 32-bit and 64-bit versions of Windows, use CWindow::SetWindowLongPtr.
Requirements
Header: atlwin.h