/// <summary>
/// Capture DWM Window
/// </summary>
/// <param name="interopWindow">IInteropWindow</param>
/// <param name="capture">Capture to fill</param>
/// <param name="windowCaptureMode">Wanted WindowCaptureModes</param>
/// <param name="autoMode">True if auto modus is used</param>
/// <returns>ICapture with the capture</returns>
public static ICapture CaptureDwmWindow(this IInteropWindow interopWindow, ICapture capture, WindowCaptureModes windowCaptureMode, bool autoMode)
{
var thumbnailHandle = IntPtr.Zero;
Form tempForm = null;
var tempFormShown = false;
try
{
tempForm = new Form
{
ShowInTaskbar = false,
FormBorderStyle = FormBorderStyle.None,
TopMost = true
};
// Register the Thumbnail
Dwm.DwmRegisterThumbnail(tempForm.Handle, interopWindow.Handle, out thumbnailHandle);
// Get the original size
Dwm.DwmQueryThumbnailSourceSize(thumbnailHandle, out var sourceSize);
if (sourceSize.Width <= 0 || sourceSize.Height <= 0)
{
return(null);
}
// Calculate the location of the temp form
var windowRectangle = interopWindow.GetInfo().Bounds;
var formLocation = windowRectangle.Location;
var borderSize = new Size();
var doesCaptureFit = false;
if (!interopWindow.IsMaximized())
{
// Assume using it's own location
formLocation = windowRectangle.Location;
using (var workingArea = new Region(Screen.PrimaryScreen.Bounds))
{
// Find the screen where the window is and check if it fits
foreach (var screen in Screen.AllScreens)
{
if (!Equals(screen, Screen.PrimaryScreen))
{
workingArea.Union(screen.Bounds);
}
}
// If the formLocation is not inside the visible area
if (!workingArea.AreRectangleCornersVisisble(windowRectangle))
{
// If none found we find the biggest screen
foreach (var screen in Screen.AllScreens)
{
var newWindowRectangle = new NativeRect(screen.WorkingArea.Location, windowRectangle.Size);
if (workingArea.AreRectangleCornersVisisble(newWindowRectangle))
{
formLocation = screen.Bounds.Location;
doesCaptureFit = true;
break;
}
}
}
else
{
doesCaptureFit = true;
}
}
}
else if (!WindowsVersion.IsWindows8OrLater)
{
//GetClientRect(out windowRectangle);
borderSize = interopWindow.GetInfo().BorderSize;
formLocation = new NativePoint(windowRectangle.X - borderSize.Width, windowRectangle.Y - borderSize.Height);
}
tempForm.Location = formLocation;
tempForm.Size = sourceSize;
// Prepare rectangle to capture from the screen.
var captureRectangle = new NativeRect(formLocation.X, formLocation.Y, sourceSize.Width, sourceSize.Height);
if (interopWindow.IsMaximized())
{
// Correct capture size for maximized window by offsetting the X,Y with the border size
// and subtracting the border from the size (2 times, as we move right/down for the capture without resizing)
captureRectangle = captureRectangle.Inflate(borderSize.Width, borderSize.Height);
}
else
{
// TODO: Also 8.x?
if (WindowsVersion.IsWindows10)
{
captureRectangle = captureRectangle.Inflate(CoreConfiguration.Win10BorderCrop.Width, CoreConfiguration.Win10BorderCrop.Height);
}
if (autoMode)
{
// check if the capture fits
if (!doesCaptureFit)
{
// if GDI is allowed.. (a screenshot won't be better than we comes if we continue)
using (var thisWindowProcess = Process.GetProcessById(interopWindow.GetProcessId()))
{
if (!interopWindow.IsApp() && WindowCapture.IsGdiAllowed(thisWindowProcess))
{
// we return null which causes the capturing code to try another method.
return(null);
}
}
}
}
}
// Prepare the displaying of the Thumbnail
var props = new DwmThumbnailProperties
{
Opacity = 255,
Visible = true,
Destination = new NativeRect(0, 0, sourceSize.Width, sourceSize.Height)
};
Dwm.DwmUpdateThumbnailProperties(thumbnailHandle, ref props);
tempForm.Show();
tempFormShown = true;
// Intersect with screen
captureRectangle = captureRectangle.Intersect(capture.ScreenBounds);
// Destination bitmap for the capture
Bitmap capturedBitmap = null;
// Check if we make a transparent capture
if (windowCaptureMode == WindowCaptureModes.AeroTransparent)
{
// Use white, later black to capture transparent
tempForm.BackColor = Color.White;
// Make sure everything is visible
tempForm.Refresh();
Application.DoEvents();
try
{
using (var whiteBitmap = WindowCapture.CaptureRectangle(captureRectangle))
{
// Apply a white color
tempForm.BackColor = Color.Black;
// Make sure everything is visible
tempForm.Refresh();
if (!interopWindow.IsApp())
{
// Make sure the application window is active, so the colors & buttons are right
// TODO: Await?
interopWindow.ToForegroundAsync();
}
// Make sure all changes are processed and visible
Application.DoEvents();
using (var blackBitmap = WindowCapture.CaptureRectangle(captureRectangle))
{
capturedBitmap = ApplyTransparency(blackBitmap, whiteBitmap);
}
}
}
catch (Exception e)
{
Log.Warn().WriteLine(e, "Exception: ");
// Some problem occurred, cleanup and make a normal capture
if (capturedBitmap != null)
{
capturedBitmap.Dispose();
capturedBitmap = null;
}
}
}
// If no capture up till now, create a normal capture.
if (capturedBitmap == null)
{
// Remove transparency, this will break the capturing
if (!autoMode)
{
tempForm.BackColor = Color.FromArgb(255, CoreConfiguration.DWMBackgroundColor.R, CoreConfiguration.DWMBackgroundColor.G, CoreConfiguration.DWMBackgroundColor.B);
}
else
{
var colorizationColor = Dwm.ColorizationSystemDrawingColor;
// Modify by losing the transparency and increasing the intensity (as if the background color is white)
colorizationColor = Color.FromArgb(255, (colorizationColor.R + 255) >> 1, (colorizationColor.G + 255) >> 1, (colorizationColor.B + 255) >> 1);
tempForm.BackColor = colorizationColor;
}
// Make sure everything is visible
tempForm.Refresh();
if (!interopWindow.IsApp())
{
// Make sure the application window is active, so the colors & buttons are right
interopWindow.ToForegroundAsync();
}
// Make sure all changes are processed and visible
Application.DoEvents();
// Capture from the screen
capturedBitmap = WindowCapture.CaptureRectangle(captureRectangle);
}
if (capturedBitmap != null)
{
// Not needed for Windows 8
if (!WindowsVersion.IsWindows8OrLater)
{
// Only if the Inivalue is set, not maximized and it's not a tool window.
if (CoreConfiguration.WindowCaptureRemoveCorners && !interopWindow.IsMaximized() &&
!interopWindow.GetInfo().ExtendedStyle.HasFlag(ExtendedWindowStyleFlags.WS_EX_TOOLWINDOW))
{
// Remove corners
if (!Image.IsAlphaPixelFormat(capturedBitmap.PixelFormat))
{
Log.Debug().WriteLine("Changing pixelformat to Alpha for the RemoveCorners");
var tmpBitmap = capturedBitmap.CloneBitmap(PixelFormat.Format32bppArgb) as Bitmap;
capturedBitmap.Dispose();
capturedBitmap = tmpBitmap;
}
RemoveCorners(capturedBitmap);
}
}
}
capture.Bitmap = capturedBitmap;
// Make sure the capture location is the location of the window, not the copy
capture.Location = interopWindow.GetInfo().Bounds.Location;
}
finally
{
if (thumbnailHandle != IntPtr.Zero)
{
// Unregister (cleanup), as we are finished we don't need the form or the thumbnail anymore
Dwm.DwmUnregisterThumbnail(thumbnailHandle);
}
if (tempForm != null)
{
if (tempFormShown)
{
tempForm.Close();
}
tempForm.Dispose();
tempForm = null;
}
}
return(capture);
}
/// <summary>
/// Extension method to capture a bitmap of the screen area where the InteropWindow is located
/// </summary>
/// <param name="interopWindow">InteropWindow</param>
/// <param name="clientBounds">true to use the client bounds</param>
/// <returns>Bitmap</returns>
public static Bitmap CaptureFromScreen(this IInteropWindow interopWindow, bool clientBounds = false)
{
var bounds = clientBounds ? interopWindow.GetInfo().ClientBounds: interopWindow.GetInfo().Bounds;
return(WindowCapture.CaptureRectangle(bounds));
}