如何使用Windows api捕获屏幕和鼠标指针

本文关键字：屏幕 鼠标指针 何使用 Windows api | 更新日期: 2023-09-27 18:02:27

我使用下面的代码在位图中捕获屏幕。屏幕被捕获，但我无法将鼠标指针放在屏幕上。你能不能建议一些其他的方法，让老鼠也被抓起来?

private Bitmap CaptureScreen()
{
    // Size size is how big an area to capture
    // pointOrigin is the upper left corner of the area to capture
    int width = Screen.PrimaryScreen.Bounds.X + Screen.PrimaryScreen.Bounds.Width;
    int height = Screen.PrimaryScreen.Bounds.Y + Screen.PrimaryScreen.Bounds.Height;
    Size size = new Size(width, height);
    Point pointOfOrigin = new Point(0, 0);
    Bitmap bitmap = new Bitmap(size.Width, size.Height);
    using (Graphics graphics = Graphics.FromImage(bitmap))
    {
        graphics.CopyFromScreen(pointOfOrigin, new Point(0, 0), size);
    }
    return bitmap;
}

如何使用Windows api捕获屏幕和鼠标指针

[StructLayout(LayoutKind.Sequential)]
struct CURSORINFO
{
    public Int32 cbSize;
    public Int32 flags;
    public IntPtr hCursor;
    public POINTAPI ptScreenPos;
}
[StructLayout(LayoutKind.Sequential)]
struct POINTAPI
{
    public int x;
    public int y;
}
[DllImport("user32.dll")]
static extern bool GetCursorInfo(out CURSORINFO pci);
[DllImport("user32.dll")]
static extern bool DrawIcon(IntPtr hDC, int X, int Y, IntPtr hIcon);
const Int32 CURSOR_SHOWING = 0x00000001;
public static Bitmap CaptureScreen(bool CaptureMouse)
{
    Bitmap result = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height, PixelFormat.Format24bppRgb);
    try
    {
        using (Graphics g = Graphics.FromImage(result))
        {
            g.CopyFromScreen(0, 0, 0, 0, Screen.PrimaryScreen.Bounds.Size, CopyPixelOperation.SourceCopy);
            if (CaptureMouse)
            {
                CURSORINFO pci;
                pci.cbSize = System.Runtime.InteropServices.Marshal.SizeOf(typeof(CURSORINFO));
                if (GetCursorInfo(out pci))
                {
                    if (pci.flags == CURSOR_SHOWING)
                    {
                        DrawIcon(g.GetHdc(), pci.ptScreenPos.x, pci.ptScreenPos.y, pci.hCursor);
                        g.ReleaseHdc();
                    }
                }
            }
        }
    }
    catch
    {
        result = null;
    }
    return result;
}

如果您不是在寻找当前使用的游标的精确副本，您可以使用以下代码，您所要做的就是在原始代码中添加一行!

private Bitmap CaptureScreen()
{
    // Size size is how big an area to capture
    // pointOrigin is the upper left corner of the area to capture
    int width = Screen.PrimaryScreen.Bounds.X + Screen.PrimaryScreen.Bounds.Width;
    int height = Screen.PrimaryScreen.Bounds.Y + Screen.PrimaryScreen.Bounds.Height;
    Size size = new Size(width, height);
    Point pointOfOrigin = new Point(0, 0);
    Bitmap bitmap = new Bitmap(size.Width, size.Height);
    {
        using (Graphics graphics = Graphics.FromImage(bitmap))
        {
            graphics.CopyFromScreen(pointOfOrigin, new Point(0, 0), size);
            //Following code is all you needed!
            graphics.DrawIcon(new Icon("Sample.ico"),Cursor.Position.X-50,Cursor.Position.Y-50);
            //The reason I minus 50 in the position is because you need to "offset" the position. Please go check out the post WholsRich commented.
        }
        return bitmap;
    }
}

你可以上网下载各种图标。

或者使用ICO Convert来制作你自己的

祝你好运!

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