小编Chr*_*ris的帖子

我试图在Windows 7 64位的进程窗口截图,问题是我总是在以下行中得到错误:

var bmp = new Bitmap (width, height, PixelFormat.Format32bppArgb);

说"无效参数",我抛出一个看错误,宽度和高度始终为0.

在32位之前它运行良好,但现在在64位中它不再起作用.

代码 :

public void CaptureApplication()
{
    string procName = "firefox";

    var proc = Process.GetProcessesByName(procName)[0];
    var rect = new User32.Rect();
    User32.GetWindowRect(proc.MainWindowHandle, ref rect);

    int width = rect.right - rect.left;
    int height = rect.bottom - rect.top;

    var bmp = new Bitmap(width, height, PixelFormat.Format32bppArgb);
    Graphics graphics = Graphics.FromImage(bmp);
    graphics.CopyFromScreen(rect.left, rect.top, 0, 0, new Size(width, height), CopyPixelOperation.SourceCopy);

    bmp.Save("c:\\tmp\\test.png", ImageFormat.Png);
}

private class User32
{
    [StructLayout(LayoutKind.Sequential)]
    public struct Rect
    {
        public int …