private void setPreview(string fileLocation)
{
if (!string.IsNullOrEmpty(fileLocation))
{
using (Image coverArt = Image.FromFile(fileLocation))
{
Windows7Taskbar.SetIconicThumbnail((IntPtr)mcRef.GetWindowHandle(), (Bitmap)coverArt.GetThumbnailImage(120, 120, null, IntPtr.Zero));
}
return;
}
}
/// <summary>
/// Sets this form's iconic thumbnail to the specified bitmap.
/// </summary>
/// <param name="form">The form.</param>
/// <param name="bitmap">The bitmap.</param>
public static void SetIconicThumbnail(this Form form, Bitmap bitmap)
{
Windows7Taskbar.SetIconicThumbnail(form.Handle, bitmap);
}
/// <summary>
/// Sets this Window's iconic thumbnail to the specified bitmap.
/// </summary>
/// <param name="form">The form.</param>
/// <param name="bitmap">The bitmap.</param>
public static void SetIconicThumbnail(this Window form, Bitmap bitmap)
{
Windows7Taskbar.SetIconicThumbnail(GetWindowHandle(form), bitmap);
}
public void DispatchMessage(ref Message m)
{
if (m.Msg == SafeNativeMethods.WM_ACTIVATE && _hwndParent != IntPtr.Zero)
{
if (((int)m.WParam) == SafeNativeMethods.WA_ACTIVE ||
((int)m.WParam) == SafeNativeMethods.WA_CLICKACTIVE)
{
UnsafeNativeMethods.SendMessage(
_hwnd, (uint)m.Msg, m.WParam, m.LParam);
//TODO: Technically, we should also test if the child
//isn't visible. If it is, no need to send the message.
}
}
if (m.Msg == SafeNativeMethods.WM_SYSCOMMAND && _hwndParent != IntPtr.Zero)
{
if (((int)m.WParam) == SafeNativeMethods.SC_CLOSE)
{
UnsafeNativeMethods.SendMessage(
_hwnd, SafeNativeMethods.WM_CLOSE, IntPtr.Zero, IntPtr.Zero);
WindowClosed();
}
}
if (m.Msg == SafeNativeMethods.WM_DWMSENDICONICTHUMBNAIL)
{
int width = (int)(((long)m.LParam) >> 16);
int height = (int)(((long)m.LParam) & (0xFFFF));
BitmapRequestedEventArgs b = new BitmapRequestedEventArgs(width, height, true);
ThumbnailRequested(this, b);
if (b.UseWindowScreenshot)
{
Size clientSize;
UnsafeNativeMethods.GetClientSize(_hwnd, out clientSize);
float thumbnailAspect = ((float)width) / height;
float windowAspect = ((float)clientSize.Width) / clientSize.Height;
if (windowAspect > thumbnailAspect)
{
//Wider than the thumbnail, make the thumbnail height smaller:
height = (int)(height * (thumbnailAspect / windowAspect));
}
if (windowAspect < thumbnailAspect)
{
//The thumbnail is wider, make the width smaller:
width = (int)(width * (windowAspect / thumbnailAspect));
}
b.Bitmap = ScreenCapture.GrabWindowBitmap(_hwnd, new Size(width, height));
}
else if (!b.DoNotMirrorBitmap)
{
b.Bitmap.RotateFlip(RotateFlipType.RotateNoneFlipY);
}
Windows7Taskbar.SetIconicThumbnail(WindowToTellDwmAbout, b.Bitmap);
b.Bitmap.Dispose(); //TODO: Is it our responsibility?
}
else if (m.Msg == SafeNativeMethods.WM_DWMSENDICONICLIVEPREVIEWBITMAP)
{
Size clientSize;
if (!UnsafeNativeMethods.GetClientSize(_hwnd, out clientSize))
{
clientSize = new Size(50, 50);//Best guess
}
BitmapRequestedEventArgs b = new BitmapRequestedEventArgs(
clientSize.Width, clientSize.Height, _hwndParent == IntPtr.Zero);
PeekRequested(this, b);
if (b.UseWindowScreenshot)
{
b.Bitmap = ScreenCapture.GrabWindowBitmap(_hwnd, clientSize);
}
else if (!b.DoNotMirrorBitmap)
{
b.Bitmap.RotateFlip(RotateFlipType.RotateNoneFlipY);
}
if (_hwndParent != IntPtr.Zero)
{
Point offset = WindowUtilities.GetParentOffsetOfChild(_hwnd, _hwndParent);
Windows7Taskbar.SetPeekBitmap(WindowToTellDwmAbout, b.Bitmap, offset, b.DisplayFrameAroundBitmap);
}
else
{
Windows7Taskbar.SetPeekBitmap(WindowToTellDwmAbout, b.Bitmap, b.DisplayFrameAroundBitmap);
}
b.Bitmap.Dispose();
}
}