卸载钩子 UnhookWindowsHookEx

最新推荐文章于 2025-04-29 09:42:17 发布

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最新推荐文章于 2025-04-29 09:42:17 发布

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原文链接：http://www.cnblogs.com/dzqdzq/p/3250997.html

版权

本文详细介绍了如何使用UnhookWindowsHookEx函数从由SetWindowsHookEx函数安装的钩子链中移除钩子过程。包括函数语法、参数说明、返回值解释及注意事项，示例展示了系统事件监控的应用。

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The UnhookWindowsHookEx function removes a hook procedure installed in a hook chain by the SetWindowsHookEx function.

Syntax

BOOL UnhookWindowsHookEx(      

    HHOOK hhk
);

Parameters

hhk
[in] Handle to the hook to be removed. This parameter is a hook handle obtained by a previous call to SetWindowsHookEx.

Return Value

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

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.

Example

For an example, see Monitoring System Events.

Function Information

Minimum DLL Version user32.dll
Header Declared in Winuser.h, include Windows.h
Import library User32.lib
Minimum operating systems Windows 95, Windows NT 3.1
Unicode Implemented as Unicode version.

Minimum DLL Version	user32.dll
Header	Declared in Winuser.h, include Windows.h
Import library	User32.lib
Minimum operating systems	Windows 95, Windows NT 3.1
Unicode	Implemented as Unicode version.