/// <summary>
/// Get rectangle of a specified window.
/// </summary>
/// <param name="source">Source Window</param>
internal static Rect GetWindowRect(Window source)
{
var handleWindow = new WindowInteropHelper(source).Handle;
try
{
NativeMethod.RECT targetRect;
// For Windows XP or older
var result = NativeMethod.GetWindowRect(
handleWindow,
out targetRect);
if (!result)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
if (OsVersion.IsVistaOrNewer)
{
// For Windows Vista or newer
bool isEnabled = false;
var result1 = NativeMethod.DwmIsCompositionEnabled(
ref isEnabled);
if (result1 != 0) // 0 means S_OK.
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
if (isEnabled)
{
var result2 = NativeMethod.DwmGetWindowAttribute(
handleWindow,
NativeMethod.DWMWA_EXTENDED_FRAME_BOUNDS,
ref targetRect,
Marshal.SizeOf(typeof(NativeMethod.RECT)));
if (result2 != 0) // 0 means S_OK.
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
}
}
return(targetRect.ToRect());
}
catch (Win32Exception ex)
{
throw new Exception(String.Format("Failed to get window rect (Code: {0}).", ex.ErrorCode), ex);
}
}
/// <summary>
/// Windows10のドロップシャドウ対策入りのキャプチャ
/// </summary>
/// <returns></returns>
public static Bitmap CaptureActiveWindow10()
{
//アクティブなウィンドウのデバイスコンテキストを取得
IntPtr hWnd = WindowAPIWrapper.GetForegroundWindowHandle();
IntPtr hWinDC = NativeMethod.GetWindowDC(hWnd);
//ウィンドウの大きさを取得
var winRect = new Rect();
Rect bounds;
NativeMethod.DwmGetWindowAttribute(hWnd,
DWMWINDOWATTRIBUTE.DWMWA_EXTENDED_FRAME_BOUNDS,
out bounds, Marshal.SizeOf(typeof(Rect)));
NativeMethod.GetWindowRect(hWnd, ref winRect);
//Bitmapの作成
var offsetX = bounds.Left - winRect.Left;
var offsetY = bounds.Top - winRect.Top;
var bmp = new Bitmap(bounds.Right - bounds.Left,
bounds.Bottom - bounds.Top);
//Graphicsの作成
using (var g = Graphics.FromImage(bmp))
{
//Graphicsのデバイスコンテキストを取得
IntPtr hDC = g.GetHdc();
//Bitmapに画像をコピーする
Int32 bmpWidth = bmp.Width;
Int32 bmpHeight = bmp.Height;
Console.WriteLine(winRect);
NativeMethod.BitBlt(hDC, 0, 0, bmpWidth, bmpHeight,
hWinDC, offsetX, offsetY, NativeMethod.SRCCOPY);
//解放
g.ReleaseHdc(hDC);
}
NativeMethod.ReleaseDC(hWnd, hWinDC);
return(bmp);
}
