/// <summary>
/// Returns runtime class name for a specific WinRT interface
/// </summary>
internal static string GetRuntimeClassName(IntPtr pWinRTItf)
{
#if ENABLE_MIN_WINRT
void *unsafe_hstring = null;
try
{
int hr = CalliIntrinsics.StdCall__int(
((__com_IInspectable *)(void *)pWinRTItf)->pVtable->pfnGetRuntimeClassName,
pWinRTItf, &unsafe_hstring);
// Don't throw if the call fails
if (hr < 0)
{
return(String.Empty);
}
return(McgMarshal.HStringToString(new IntPtr(unsafe_hstring)));
}
finally
{
if (unsafe_hstring != null)
{
McgMarshal.FreeHString(new IntPtr(unsafe_hstring));
}
}
#else
throw new PlatformNotSupportedException("GetRuntimeClassName(IntPtr)");
#endif
}
/// <summary>
/// Returns the requested interface pointer specified by itfType from the CCWActivationFactory
/// object instance. Typically the requested interface is the
/// System.Runtime.InteropServices.WindowsRuntime.IActivationFactory interface.
/// </summary>
public unsafe int GetCCWActivationFactory(HSTRING activatableClassId, RuntimeTypeHandle itfType, IntPtr *factoryOut)
{
try
{
string classId = McgMarshal.HStringToString(activatableClassId);
if (classId == null)
{
return(Interop.COM.E_INVALIDARG);
}
RuntimeTypeHandle factoryTypeHandle = default(RuntimeTypeHandle);
if (m_ccwFactoriesNameMap != null)
{
int slot = m_ccwFactoriesNameMap.FindString(classId);
if (slot >= 0)
{
factoryTypeHandle = m_ccwFactories[slot].FactoryType;
}
}
if (factoryTypeHandle.IsNull())
{
return(Interop.COM.E_NOINTERFACE);
}
object factory = InteropExtensions.RuntimeNewObject(factoryTypeHandle);
*factoryOut = McgMarshal.ObjectToComInterface(
factory,
itfType);
}
catch (Exception ex)
{
*factoryOut = default(IntPtr);
return(McgMarshal.GetHRForExceptionWinRT(ex));
}
return(Interop.COM.S_OK);
}