public bool Initialize(Session session, string resourcePath, ref InstallUIOptions uiLevel)
{
Debugger.Launch();
if (session != null && (session.IsUninstalling() || uiLevel.IsBasic()))
return false; //use built-in MSI basic UI
ReadDialogs(session);
var startEvent = new ManualResetEvent(false);
var uiThread = new Thread(() =>
{
shell = new UIShell(); //important to create the instance in the same thread that call ShowModal
shell.ShowModal(new MsiRuntime(session) { StartExecute = () => startEvent.Set() }, this);
uiExitEvent.Set();
});
uiThread.SetApartmentState(ApartmentState.STA);
uiThread.Start();
int waitResult = WaitHandle.WaitAny(new[] { startEvent, uiExitEvent });
if (waitResult == 1)
{
//UI exited without starting the install. Cancel the installation.
throw new InstallCanceledException();
}
else
{
// Start the installation with a silenced internal UI.
// This "embedded external UI" will handle message types except for source resolution.
uiLevel = InstallUIOptions.NoChange | InstallUIOptions.SourceResolutionOnly;
shell.OnExecuteStarted();
return true;
}
}