The CallNextHookEx function passes the hook information to the next hook procedure in the current hook chain. A hook procedure can call this function either before or after processing the hook information.
LRESULT CallNextHookEx(
HHOOK hhk, |
// handle to current hook |
int nCode, |
// hook code passed to hook procedure |
WPARAM wParam, |
// value passed to hook procedure |
LPARAM lParam |
// value passed to hook procedure |
); |
The return value is the value returned by the next hook procedure in the chain. The current hook procedure must also return this value. The meaning of the return value depends on the hook type. For more information, see the descriptions of the individual hook procedures.
Hook procedures are installed in chains for particular hook types. CallNextHookEx calls the next hook in the chain.
Calling CallNextHookEx is optional, but it is highly recommended; otherwise, other applications that have installed hooks will not receive hook notifications and may behave incorrectly as a result. You should call CallNextHookEx unless you absolutely need to prevent the notification from being seen by other applications.
SetWindowsHookEx, UnhookWindowsHookEx
file: /Techref/os/win/api/win32/func/src/f04.htm, 3KB, , updated: 2000/4/7 11:19, local time: 2024/11/5 05:40,
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