CallNextHookEx

Description

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.

Syntax

LRESULT WINAPI CallNextHookEx(
  _In_opt_  HHOOK hhk,
  _In_      int nCode,
  _In_      WPARAM wParam,
  _In_      LPARAM lParam
);

Parameters

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.

Return value

Type:

Type: LRESULT

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.