//this is App2.exe
writeEvent = CreateEvent(
            NULL,
            TRUE,
            FALSE,
            TEXT("WriteEvent")
        );
        if (writeEvent == NULL) {
            return;
        }
SetEvent(writeEvent);
result = CreateProcess( ... ); //opens app3.exe

How do I track this event in app3.exe? I tried doing:
    DWORD dwWaitResult;

    writeEvent = OpenEvent(
                READ_CONTROL,        // default security attributes
                TRUE,               // manual-reset event
                TEXT("WriteEvent")  // object name
            );

    dwWaitResult = WaitForSingleObject(
        writeEvent,
        INFINITE
        );

    switch (dwWaitResult) {
        // Received event successfully
        case WAIT_OBJECT_0:
        LoadTime();
        SaveTime();
        ResetEvent(writeEvent);
        break;
    }