protected internal ComObject(IComInterface comInterface)
{
if (comInterface == null)
{
throw new ArgumentNullException(nameof(comInterface));
}
_comInterface = comInterface;
}
public static void TestComInteropNullPointers()
{
Console.WriteLine("Testing Marshal APIs for COM interfaces");
IComInterface comPointer = null;
var result = IsNULL(comPointer);
ThrowIfNotEquals(true, IsNULL(comPointer), "COM interface marshalling null check failed");
}
public ImprovedClass()
{
var typeBaseIComInterface = typeof(OldLibrary.BaseClass).GetInterfaces().First((t) =>
t.GUID == typeof(IComInterface).GUID); // get OldLibrary.BaseClass.IComInterface
this.unkBaseIComInterface = Marshal.GetComInterfaceForObject(this, typeBaseIComInterface, CustomQueryInterfaceMode.Ignore);
this.unkBaseShim = Marshal.CreateAggregatedObject(this.unkBaseIComInterface, new Inner(this.unkBaseIComInterface));
this.baseComInterface = (IComInterface)Marshal.GetTypedObjectForIUnknown(this.unkBaseShim, typeof(IComInterface));
((IComInterface)this).ComMethod(this); // works!
}
static extern int BuildComPointer(out IComInterface foo);
static extern int RetrieveCapturedComPointer(out IComInterface foo);
static extern int CaptureComPointer(IComInterface foo);
static extern bool IsNULL(IComInterface foo);
public static extern void GetIComInterfaceCs([MarshalAs(UnmanagedType.Interface)] ref IComInterface <char> pValues, int count);
public static extern void GetIComInterfaceCOut([MarshalAs(UnmanagedType.Interface)] out IComInterface <char> value);
protected internal ComObject(IComInterface comInterface)
{
if (comInterface == null)
throw new ArgumentNullException(nameof(comInterface));
_comInterface = comInterface;
}
