Method BeforeUpdate

LegacyUpdate/LegacyUpdateCtrl.cpp:635–670

}

STDMETHODIMP CLegacyUpdateCtrl::BeforeUpdate(void) {
	DoIsPermittedCheck();

	IElevationHelper *elevatedHelper;
	HRESULT hr = GetElevatedHelper(&elevatedHelper);
	CHECK_HR_OR_RETURN(L"GetElevatedHelper");

	// Allow IUpdateInstaller->RunWizard() dialog to come to foreground while this process is in foreground.
	// Without this, Windows will see it as a disruption and ignore the request.
	DWORD pid;
	hr = elevatedHelper->GetProcessId(&pid);
	if (SUCCEEDED(hr)) {
		HWND hwnd = NULL;
		GetIEWindowHWND(&hwnd);

		// Do some thread magic to execute in the thread context of the top-level IE process
		BOOL attached = FALSE;
		DWORD brokerThread = 0;
		DWORD currentThread = GetCurrentThreadId();
		if (hwnd) {
			brokerThread = GetWindowThreadProcessId(hwnd, NULL);

			if (brokerThread != 0 && brokerThread != currentThread) {
				attached = AttachThreadInput(currentThread, brokerThread, TRUE);
			}
		}

		AllowSetForegroundWindow(pid);

		if (attached) {
			AttachThreadInput(currentThread, brokerThread, FALSE);
		}
	}

	return elevatedHelper->BeforeUpdate();
}

STDMETHODIMP CLegacyUpdateCtrl::AfterUpdate(void) {
	DoIsPermittedCheck();