Hi,
I created this simple sample Form with the close button.
Everything is working as expected when NOT using the Interop.WMPLib.dll
I've seen other applications using this without problems but why isn'
t the Form process closed when I just add the line:
SoundPlayer myPlayer = new SoundPlayer();
and of course dispose it:
if (myPlayer != null)
{
myPlayer.Dispose();
myPlayer = null;
}
The Form closes but the debugger VS2008 is still active. The Form project and the dll are still active.
If you send me an email to
[email protected], I can send you the zipped project.
Below is the class for the dll:
using System;
using System.Collections.Generic;
using System.Text;
using System.Threading;
using System.Runtime.InteropServices;
using WMPLib;
namespace WindowsMobile.Utilities
{
public delegate void SoundPlayerStateChanged(SoundPlayer sender, SoundPlayerState newState);
public enum SoundPlayerState
{
Stopped,
Playing,
Paused,
}
public class SoundPlayer : IDisposable
{
[DllImport("coredll")]
public extern static int waveOutSetVolume(int hwo, uint dwVolume);
[DllImport("coredll")]
public extern static int waveOutGetVolume(int hwo, out uint dwVolume);
WindowsMediaPlayer myPlayer = new WindowsMediaPlayer();
public SoundPlayer()
{
myPlayer.uiMode = "invisible";
myPlayer.settings.volume = 100;
}
string mySoundLocation =
string.Empty;
public
string SoundLocation
{
get { return mySoundLocation; }
set { mySoundLocation = value; }
}
public void Pause()
{
myPlayer.controls.pause();
}
public void PlayLooping()
{
Stop();
myPlayer.URL = mySoundLocation;
myPlayer.settings.setMode("loop", true);
}
public int Volume
{
get { return myPlayer.settings.volume; }
set { myPlayer.settings.volume = value; }
}
public void Play()
{
Stop();
myPlayer.URL = mySoundLocation;
myPlayer.controls.play();
}
public void Stop()
{
myPlayer.controls.stop();
myPlayer.close();
}
#region IDisposable Members
public void Dispose()
{
try
{
Stop();
}
catch (Exception)
{
}
// need this otherwise the process won'
t exit?!
try
{
int ret = Marshal.FinalReleaseComObject(myPlayer);
}
catch (Exception)
{
}
myPlayer = null;
GC.Collect();
}
#endregion
}
}
