Myujth

The question is that: I have a WPF application and want to send a Win10 Style notification.

I searched all the website I know and find the MSDN way to do that: https://docs.microsoft.com/en-us/windows/uwp/design/shell/tiles-and-notifications/send-local-toast-desktop.

But unfortunately, I'm not using a Wix Installer, so I managed to create the shortcut in an other way: IShellLinkW.

So far, I succeed in sending a Toast. but I can't get a callback when operating on it.

My create short cut code:

using (PropVariant appId = new PropVariant(_aumid))

 ErrorHelper.VerifySucceeded(newShortcutProperties.SetValue
 (
 new PropertyKey(new Guid("9F4C2855-9F79-4B39-A8D0-E1D42DE1D5F3"), 5), appId)
 );

It works well,so the SetValue method should be OK

I think I can hock the callback method with its GUID in the same way:

var toastclass = typeof(T).GUID.ToString();
using (PropVariant toastid = new PropVariant(toastclass))

 toastid.SetEnum(VarEnum.VT_CLSID);
 ErrorHelper.VerifySucceeded
 (
 newShortcutProperties.SetValue
 (
 new PropertyKey(new Guid("9F4C2855-9F79-4B39-A8D0-E1D42DE1D5F3"), 26), toastid
 )
 );

ErrorHelper.VerifySucceeded(newShortcutProperties.Commit());

I register it this way

// Register type
var regService = new RegistrationServices();

regService.RegisterTypeForComClients
(
 typeof(T),
 RegistrationClassContext.LocalServer,
 RegistrationConnectionType.MultipleUse
);

_registeredActivator = true;

but finally the callback method not firing

[ClassInterface(ClassInterfaceType.None)]
[ComSourceInterfaces(typeof(INotificationActivationCallback))]
[Guid("9a88b91d-f9c4-4c63-91dd-175c2c2cb458"), ComVisible(true)]
public class AreaIconToast : NotificationActivator
{

Finally I solved this problem, I find it is beacuse I pass CLSID in string format when creating the shortcut,but the right way is to pass it as byte ,so that's why the callback method don't work.