The UnhookWindowsHookEx function removes a hook procedure installed in a hook chain by the SetWindowsHookEx function.
BOOL UnhookWindowsHookEx(
| HHOOK hhk | // handle of hook procedure to remove |
| ); |
Parameters
hhk
Identifies the hook to be removed. This parameter is a hook handle obtained by a previous call to SetWindowsHookEx.
Return Values
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero.
Remarks
The hook procedure can be in the state of being called by another thread even after UnhookWindowsHookEx returns. If the hook procedure is not being called concurrently, the hook procedure is removed immediately before UnhookWindowsHookEx returns.
See Also