钩子(HOOK)函数教程（三十）

结构8 ：MOUSEHOOKSTRUCT Structure copyright 智动软件

The MOUSEHOOKSTRUCT structure contains information about a mouse event passed to a WH_MOUSE hook procedure, MouseProc.

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MOUSEHOOKSTRUCT结构包含有传递给WH_MOUSE钩子子程MouseProc的，关于鼠标事件的信息。 本文来自智动软件zdwork.cn

Syntax语法

typedef struct { 内容来自zdwork.cn

    POINT pt;

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    HWND hwnd;

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    UINT wHitTestCode; 本文来自智动软件zdwork.cn

    ULONG_PTR dwExtraInfo; 本文来自智动软件zdwork.cn

} MOUSEHOOKSTRUCT, *PMOUSEHOOKSTRUCT;

Members成员

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pt ：Specifies a POINT structure that contains the x- and y-coordinates of the cursor, in screen coordinates. 指定在屏幕坐标系下，包含有光标x、y坐标的POINT结构。 copyright 智动软件

hwnd : Handle to the window that will receive the mouse message corresponding to the mouse event. 希望对鼠标事件做出响应、接收鼠标消息的窗体的句柄。

wHitTestCode ：Specifies the hit-test value. For a list of hit-test values, see the description of the WM_NCHITTEST message. 指定点击测试值。查看WM_NCHITTEST消息可以得到值的列表。 zdwork.cn

dwExtraInfo ：Specifies extra information associated with the message. 指定和该消息相关联的附加信息。

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结构9：MOUSEHOOKSTRUCTEX Structure 内容来自zdwork.cn

The MOUSEHOOKSTRUCTEX structure contains information about a mouse event passed to a WH_MOUSE hook procedure, MouseProc. 内容来自zdwork.cn

MOUSEHOOKSTRUCTEX结构包含有传递给WH_MOUSE钩子子程MouseProc的关于鼠标事件的信息。

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This is an extension of the MOUSEHOOKSTRUCT structure that includes information about wheel movement or the use of the X button. copyright 智动软件

这是对MOUSEHOOKSTRUCT的扩展。包含有滚轮的活动和X键的使用。

Syntax语法

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typedef struct { copyright 智动软件

    MOUSEHOOKSTRUCT MOUSEHOOKSTRUCT; 智动软件

    DWORD mouseData; 智动软件

} MOUSEHOOKSTRUCTEX, *PMOUSEHOOKSTRUCTEX; 内容来自zdwork.cn

Members成员 copyright 智动软件

MOUSEHOOKSTRUCT 内容来自zdwork.cn

The members of a MOUSEHOOKSTRUCT structure make up the first part of this structure.

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MOUSEHOOKSTRUCT结构的成员构成了该结构的前面部分。

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mouseData

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If the message is WM_MOUSEWHEEL, the HIWORD of this member is the wheel delta. The LOWORD is undefined and reserved. A positive value indicates that the wheel was rotated forward, away from the user; a negative value indicates that the wheel was rotated backward, toward the user. One wheel click is defined as WHEEL_DELTA, which is 120.

如果消息是WM_MOUSEWHEEL，该成员的HIWORD就是wheel delta。LOWORD做为保留未定义。正值表示滚轮向前旋转，即远离用户的方向；负值表示滚轮向后旋转，即朝向用户的方向。滚轮的点击被定义为WHEEL_DELTA, 具体值为120。 www.zdwork.cn

If the message is WM_XBUTTONDOWN, WM_XBUTTONUP, WM_XBUTTONDBLCLK, WM_NCXBUTTONDOWN, WM_NCXBUTTONUP, or WM_NCXBUTTONDBLCLK, the HIWORD of mouseData specifies which X button was pressed or released, and the LOWORD is undefined and reserved. This member can be one or more of the following values. Otherwise, mouseData is not used. 本文来自智动软件zdwork.cn

如果消息是WM_XBUTTONDOWN, WM_XBUTTONUP, WM_XBUTTONDBLCLK, WM_NCXBUTTONDOWN, WM_NCXBUTTONUP, 或者 WM_NCXBUTTONDBLCLK,  mouseData  的HIWORD值指定哪个X键被按下或者释放，LOWORD做为保留未定义。该成员可以是以下值中的一个或者多个。否则，mouseData未使用。 本文来自智动软件zdwork.cn

1．XBUTTON1 ：The first X button was pressed or released. 第一个X键被按下或者释放。 内容来自zdwork.cn

2．XBUTTON2 ：The second X button was pressed or released.第二个X键被按下或者释放。

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Helios  2007-5-31 智动软件