C#(WinForms)-查找光标的颜色 [英] C# (WinForms) - Find Colour of Cursor

问题描述

我的目标:

• 我希望能够从某些坐标中检索包括光标在内的屏幕上的颜色.
• 换句话说，我想你可以说我想检索光标的颜色(或者至少是光标上的某个点/像素).

我的难处:

• 我已经有一些代码可以从某些坐标中检索屏幕上的颜色，但是我相信它不包含光标.我相信这是因为我使用的方法需要一个屏幕截图(没有光标)，并从中读取颜色.

我当前的代码:

    public static Color RetrieveColour(Point Coordinates)
    {
        //Use this 'image' to create a Graphics class.
        using (Graphics Destination = Graphics.FromImage(ScreenPixel))
        {
             //Creates a graphic from the specified handler to a window.
             //In this case, it uses a handler which has been initialised to zero.
             using (Graphics Source = Graphics.FromHwnd(IntPtr.Zero))
             {
                 //Handler from the source device context.
                 IntPtr HandlerSourceDC = Source.GetHdc();
                 //Handler to the destination device context.
                 IntPtr HandlerDC = Destination.GetHdc();
                 //BitBlt is responsible for doing the copying.
                 //Returns a non-zero value for upon success.
                 int retval = BitBlt(HandlerDC, 0, 0, 1, 1, HandlerSourceDC, Coordinates.X, Coordinates.Y, (int)CopyPixelOperation.SourceCopy);
                 //Release the handlers.
                 Destination.ReleaseHdc();
                 Source.ReleaseHdc();
             }
        }
        //Retrieve the colour of the pixel at the specified coordinates.
        return ScreenPixel.GetPixel(0, 0);
    }

我可能应该添加，它应该与非Windows游标一起使用.我的意思是指来自其他应用程序的自定义游标(如果这对将来的答案有影响).

I should probably add, it should work with non-Windows cursors. By this I mean custom cursors from other applications (if that has any bearing on future answers).

推荐答案

据我目前所知，唯一能够做到这一点的方法是创建一个可充当用户之间的中介.

As far as I am currently aware, the only way that you'd be able to do this is if you were to create a custom driver that can act as an intermediary between the user.

我还没有读太多，但是您可能想研究这个项目 http://www.codeproject.com/KB/cs/DesktopCaptureWithMouse.aspx?display = Print

I haven't read much of it, but you might want to look into this project http://www.codeproject.com/KB/cs/DesktopCaptureWithMouse.aspx?display=Print

以前发布在这里: C#-捕获鼠标光标图像

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