C# How can I implement iDisposable for P/Invokde?

[just2click]

Hi,

I'm using a third party C based DLL for some image manipulation.
I've noticed that my original wrapper class doesn't implement iDisposable, thus I cannot dispose the utility class at will.

I've trying to find a sample that will help me put this last piece in it's place but I'm unable to find any reference.

This is how this DLL is defined and used

 
public sealed class ManipulateImageWrapper: IDisposable {
 
[DllImport("manipulateImage.dll", EntryPoint="ManipulateBitmap")]
static extern Byte ManipulatrBitmap(IntPtr Bitmap1);
 
public string ImageManipulate(Bitmap iImage1) {
    return (ManipulatrBitmap(iImage1.GetHbitmap()).ToString(); 
}
 
#region IDisposable Members
 
public void Dispose() {
    Dispose(true);
    GC.SuppressFinalize(this);
}
 
private void Dispose(bool disposing) {
[This is the part I'm missing, how to dispose "manipulateImage.dll"]
}
 
~ImageCompareWrapper() {
    Dispose(false);
}
 
#endregion
 

Thanks in advance

Dror

[menocomp]

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