// nCmdShow的含义
//0 关闭窗口
//1 正常大小显示窗口
//2 最小化窗口
//3 最大化窗口
//使用实例: ShowWindow(myPtr, 0);
#endregion
/// <summary>
/// 根据窗口HWND截取窗口
/// </summary>
/// <param name="handle"></param>
/// <returns></returns>
public static Image GetWindowCapture(IntPtr handle)
{
// get te hDC of the target window
IntPtr hdcSrc = GetWindowDC(handle);
ShowWindow(hdcSrc, 1);
// get the size
SC_RECT windowRect = new SC_RECT();
GetWindowRect(handle, ref windowRect);
int width = windowRect.right - windowRect.left;
int height = windowRect.bottom - windowRect.top;
// create a device context we can copy to
IntPtr hdcDest = CreateCompatibleDC(hdcSrc);
// create a bitmap we can copy it to,
// using GetDeviceCaps to get the width/height
IntPtr hBitmap = CreateCompatibleBitmap(hdcSrc, width, height);
// select the bitmap object
IntPtr hOld = SelectObject(hdcDest, hBitmap);
// bitblt over
BitBlt(hdcDest, 0, 0, width, height, hdcSrc, 0, 0, SRCCOPY | CAPTUREBLT);
// restore selection
SelectObject(hdcDest, hOld);
// clean up
DeleteDC(hdcDest);
ReleaseDC(handle, hdcSrc);
// get a .NET image object for it
Image img = Image.FromHbitmap(hBitmap);
// free up the Bitmap object
DeleteObject(hBitmap);
return(img);
}
public static extern IntPtr GetWindowRect(IntPtr hWnd, ref SC_RECT rect);