public void Register(IntPtr destination, IntPtr source)
{
this._properties = new DWM_THUMBNAIL_PROPERTIES();
this._properties.dwFlags = DWM_TNP_CONSTANTS.DWM_TNP_VISIBLE
+ DWM_TNP_CONSTANTS.DWM_TNP_OPACITY
+ DWM_TNP_CONSTANTS.DWM_TNP_RECTDESTINATION
+ DWM_TNP_CONSTANTS.DWM_TNP_SOURCECLIENTAREAONLY;
this._properties.opacity = 255;
this._properties.fVisible = true;
this._properties.fSourceClientAreaOnly = true;
if (!this._windowManager.IsCompositionEnabled)
{
return;
}
try
{
this._handle = DwmApiNativeMethods.DwmRegisterThumbnail(destination, source);
}
catch (ArgumentException)
{
// This exception is raised if the source client is already closed
// Can happen on a really slow CPU's that the window is still being
// lised in the process list yet it already cannot be used as
// a thumbnail source
this._handle = IntPtr.Zero;
}
}
private void RegisterThumbnail()
{
this._thumbnailHandle = DwmApiNativeMethods.DwmRegisterThumbnail(this.Handle, this.Id);
this._thumbnail = new DWM_THUMBNAIL_PROPERTIES();
this._thumbnail.dwFlags = DWM_TNP_CONSTANTS.DWM_TNP_VISIBLE
+ DWM_TNP_CONSTANTS.DWM_TNP_OPACITY
+ DWM_TNP_CONSTANTS.DWM_TNP_RECTDESTINATION
+ DWM_TNP_CONSTANTS.DWM_TNP_SOURCECLIENTAREAONLY;
this._thumbnail.opacity = 255;
this._thumbnail.fVisible = true;
this._thumbnail.fSourceClientAreaOnly = true;
this._isThumbnailSetUp = true;
}
