User32.dll 鼠标事件
我正在寻找一个光标控制类，我正在尝试使其适应我的程序。我让它按照我的意愿工作，但我有点不确定这些数字在这种情况下意味着什么。任何人都可以解释 0x01 等的含义吗？
private const int MouseEventMove = 0x01;
private const int MouseEventLeftDown = 0x02;
private const int MouseEventLeftUp = 0x04;
private const int MouseEventRightDown = 0x08;
private const int MouseEventRightUp = 0x10;
private const int MouseEventAbsolute = 0x8000;
谢谢。
I'm looking at a cursor control class that I'm trying to adapt for my program. I have it working as I wish, but I was unsure a little on what these numbers mean in this case. Can anybody shed any light on what the 0x01 etc mean.
private const int MouseEventMove = 0x01;
private const int MouseEventLeftDown = 0x02;
private const int MouseEventLeftUp = 0x04;
private const int MouseEventRightDown = 0x08;
private const int MouseEventRightUp = 0x10;
private const int MouseEventAbsolute = 0x8000;
Thanks.
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这些是您传递给 mouse_event() Windows API 函数。标志值在 WinUser.h Windows SDK 头文件中声明。正如链接的 MSDN 文章中所述，您不应再使用此函数。
访问 pinvoke.net 以获取 SendInput() 的正确声明。
Those are the values of the MOUSEEVENTF flags you pass to the mouse_event() Windows api function. The flag values are declared in the WinUser.h Windows SDK header file. As noted in the linked MSDN article you shouldn't be using this function anymore.
Visit pinvoke.net to get the proper declaration for SendInput().
这些是Flag枚举。
它们每个都被赋予一个 2 次方的值，因此对于任何组合值，设置哪个标志都不会产生歧义。
来自 MSDN：
http://msdn.microsoft.com/en-us/library/ms229062.aspx
在您的特定情况下，枚举似乎描述了正在发生的鼠标事件类型。
编辑：正如 Hans 指出的那样，这在技术上不是一个枚举，而是一组 const int 定义，尽管出于所有实际目的，我认为它充当枚举 - 为积分提供人类可读的标签价值。有没有更合适的名字呢？
These are Flag enumerations.
They are each given a value in powers of 2, so for any combined value, there will be no ambiguity about which of the flags are set.
From MSDN:
http://msdn.microsoft.com/en-us/library/ms229062.aspx
In your particular case it seems that the enumeration describes what type of mouse event is occurring.
Edit: As Hans points out, this is not technically an enumeration, but a group of
const intdefinitions, though for all practical purposes I feel it serves as an enumeration - giving a human readable label for an integral value. Is there a more suitable name for this?