/// <summary>
/// Full screen mode or un-do full screen mode.
/// </summary>
public void FullScreenMode()
{
int hr = 0;
// Stop and reset postion to beginning
if ((_currentState == PlayState.Paused) || (_currentState == PlayState.Running) || (_currentState == PlayState.Stopped))
{
OABool mode;
// Don't bother with full-screen for audio-only files
if ((_isAudioOnly) || (_videoWindow == null))
{
return;
}
// Read current state
hr = _videoWindow.get_FullScreenMode(out mode);
DsError.ThrowExceptionForHR(hr);
if (mode == OABool.False)
{
// Save current message drain
hr = _videoWindow.get_MessageDrain(out _pDrain);
DsError.ThrowExceptionForHR(hr);
// Set message drain to application main window
hr = _videoWindow.put_MessageDrain(_playWindow.Handle);
DsError.ThrowExceptionForHR(hr);
// Switch to full-screen mode
mode = OABool.True;
hr = _videoWindow.put_FullScreenMode(mode);
DsError.ThrowExceptionForHR(hr);
_isFullScreen = true;
}
else
{
// Switch back to windowed mode
mode = OABool.False;
hr = _videoWindow.put_FullScreenMode(mode);
DsError.ThrowExceptionForHR(hr);
// Undo change of message drain
hr = _videoWindow.put_MessageDrain(_pDrain);
DsError.ThrowExceptionForHR(hr);
// Reset video window
hr = _videoWindow.SetWindowForeground(OABool.True);
DsError.ThrowExceptionForHR(hr);
// Reclaim keyboard focus for player application
//this.Focus();
_isFullScreen = false;
}
}
}
////////////////
/// Get/Set MessageDrain
private void TestMessageDrain()
{
int hr;
IntPtr MessageDrain1, MessageDrain2;
// Read the current value
hr = m_ivw.get_MessageDrain(out MessageDrain1);
Marshal.ThrowExceptionForHR(hr);
// Change it
hr = m_ivw.put_MessageDrain((IntPtr)(MessageDrain1.ToInt32() + 1));
Marshal.ThrowExceptionForHR(hr);
// Re-read
hr = m_ivw.get_MessageDrain(out MessageDrain2);
Marshal.ThrowExceptionForHR(hr);
// Put it back to null
hr = m_ivw.put_MessageDrain(IntPtr.Zero);
Marshal.ThrowExceptionForHR(hr);
// Make sure the value we set is what we just read
Debug.Assert(MessageDrain1.ToInt32() + 1 == MessageDrain2.ToInt32(), "get/set MessageDrain");
}