public static object ObjectForWrapper(IntPtr ptr)
{
if (ptr == IntPtr.Zero)
{
return(null);
}
ManagedValue val = FromHandle(ptr);
return(val == null ? null : val.Instance);
}
static ManagedValue FromHandle(IntPtr ptr)
{
GCHandle gch = (GCHandle)ptr;
ManagedValue val = gch.Target as ManagedValue;
if (val == null)
{
throw new Exception("Unexpected GCHandle received.");
}
return(val);
}
public static void ReleaseWrapper(IntPtr ptr)
{
if (ptr == IntPtr.Zero)
{
return;
}
ManagedValue val = FromHandle(ptr);
val.Unref();
}
static void Free(IntPtr ptr)
{
try {
if (ptr == IntPtr.Zero)
{
return;
}
ManagedValue val = FromHandle(ptr);
val.Unref();
} catch (Exception e) {
ExceptionManager.RaiseUnhandledException(e, false);
}
}
static IntPtr Copy(IntPtr ptr)
{
try {
if (ptr == IntPtr.Zero)
{
return(ptr);
}
ManagedValue val = FromHandle(ptr);
val.Ref();
return(ptr);
} catch (Exception e) {
ExceptionManager.RaiseUnhandledException(e, false);
}
return(IntPtr.Zero);
}