结构9：MSLLHOOKSTRUCT Structure 本文来自智动软件zdwork.cn
The MSLLHOOKSTRUCT structure contains information about a low-level keyboard input event. （msdn错误） copyright 智动软件
该MSLLHOOKSTRUCT结构包含有低层键盘输入事件的信息。
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Syntax语法 www.zdwork.cn
typedef struct { 智动软件
POINT pt; www.zdwork.cn
DWORD mouseData; 本文来自智动软件zdwork.cn
DWORD flags; copyright 智动软件
DWORD time; zdwork.cn
ULONG_PTR dwExtraInfo; zdwork.cn
} MSLLHOOKSTRUCT, *PMSLLHOOKSTRUCT; 本文来自智动软件zdwork.cn
Members成员 copyright 智动软件
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。
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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.
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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。
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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. www.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。 www.zdwork.cn
1．XBUTTON1：The first X button was pressed or released. 第一个X键被按下或者释放。 本文来自智动软件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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flags copyright 智动软件
Specifies the event-injected flag. An application can use the following value to test the mouse flags. 指定事件注入标志。应用程序可以使用下列值来测试鼠标标志。 本文来自智动软件zdwork.cn
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Value 智动软件
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Purpose www.zdwork.cn
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LLMHF_INJECTED 内容来自zdwork.cn
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Test the event-injected flag.测试事件注入标志。 copyright 智动软件
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0
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Specifies whether the event was injected. The value is 1 if the event was injected; otherwise, it is 0. 事件是否被注入。如果被注入，为 1，否则为0 www.zdwork.cn
1-15 ：Reserved.保留
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time
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Specifies the time stamp for this message. 消息的时间戳。
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dwExtraInfo zdwork.cn
Specifies extra information associated with the message. 消息的扩展信息。
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Helios 2007-5-31 zdwork.cn
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