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Used within code that is hooking an event set by SetWindowsHookEx.
CallNextHookEx calls the next hook in the chain.
Analyze the function calling CallNextHookEx to determine the purpose of a hook set by SetWindowsHookEx.
LRESULT WINAPI CallNextHookEx( _In_opt_ HHOOK hhk, _In_ int nCode, _In_ WPARAM wParam, _In_ LPARAM lParam );
- hhk [in, optional]
- Type: HHOOK
- This parameter is ignored.
- nCode [in]
- Type: int
- The hook code passed to the current hook procedure. The next hook procedure uses this code to determine how to process the hook information.
- wParam [in]
- Type: WPARAM
- The wParam value passed to the current hook procedure. The meaning of this parameter depends on the type of hook associated with the current hook chain.
- lParam [in]
- Type: LPARAM
- The lParam value passed to the current hook procedure. The meaning of this parameter depends on the type of hook associated with the current hook chain.
This value is 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.