Question

So I’m developing an application that takes a picture after a countdown is complete. I’ve worked with the win32 timer in windows 7, but I have no clue on how to apply it in windows metro. I need some help or some sample code in c++ pertaining to how to trigger an event after a set amount of time expires.
Thanks in advance for your help

Answer 1

In C++, declare the DispatcherTimer, and register one event handler on it.

DispatcherTimer class – http://msdn.microsoft.com/library/windows/apps/windows.ui.xaml.dispatchertimer

http://msdn.microsoft.com/en-us/library/system.windows.threading.dispatchertimer.aspx

Sample code:

using namespace Windows::UI::Xaml;
using namespace Windows::Foundation;


void Application1::MainPage::Button_Click(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e)
{
    DispatcherTimer^ timer = ref new DispatcherTimer;
    timer->Tick += ref new Windows::UI::Xaml::EventHandler(this, &Application1::MainPage::DispatcherTimer_Tick);
    TimeSpan t;
    t.Duration=1000;
    timer->Interval = t;
    timer->Start();
}

void Application1::MainPage::DispatcherTimer_Tick(Platform::Object^ sender, Platform::Object^ e)
{
   // Put TO DO stuff here...
}