// Calls the given callback in the right context.
// On any exception, calls onFail callback if any set.
// If not set, exception is handled due to today we don't
// have any scenario to propagate it from here.
public unsafe static void CallInContext(IntPtr contextCallbackPtr, IntPtr contextToken, Action callback, Action onFailCallback)
{
// Check if we are already on the same context, if so we do not need to switch.
if (contextCallbackPtr == IntPtr.Zero || GetContextToken() == contextToken)
{
callback();
return;
}
ComCallData data = default;
var contextCallback = new ABI.WinRT.Interop.IContextCallback(ObjectReference <ABI.WinRT.Interop.IContextCallback.Vftbl> .FromAbi(contextCallbackPtr));
try
{
contextCallback.ContextCallback(_ =>
{
callback();
return(0);
}, &data, IID_ICallbackWithNoReentrancyToApplicationSTA, 5);
}
catch (Exception)
{
onFailCallback?.Invoke();
}
}
protected override unsafe void Release()
{
ComCallData data = default;
IntPtr contextCallbackPtr = _contextCallbackPtr;
var contextCallback = new ABI.WinRT.Interop.IContextCallback(ObjectReference <ABI.WinRT.Interop.IContextCallback.Vftbl> .Attach(ref contextCallbackPtr));
contextCallback.ContextCallback(_ =>
{
base.Release();
return(0);
}, &data, IID_ICallbackWithNoReentrancyToApplicationSTA, 5);
}