137 lines
4.4 KiB
C++
137 lines
4.4 KiB
C++
//
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// App.xaml.cpp
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// Implementation of the App class.
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//
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#include "pch.h"
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#include "MainPage.xaml.h"
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using namespace PhoneTutorial;
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using namespace Platform;
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using namespace Windows::ApplicationModel;
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using namespace Windows::ApplicationModel::Activation;
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using namespace Windows::Foundation;
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using namespace Windows::Foundation::Collections;
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using namespace Windows::UI::Xaml;
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using namespace Windows::UI::Xaml::Controls;
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using namespace Windows::UI::Xaml::Controls::Primitives;
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using namespace Windows::UI::Xaml::Data;
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using namespace Windows::UI::Xaml::Input;
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using namespace Windows::UI::Xaml::Interop;
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using namespace Windows::UI::Xaml::Media;
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using namespace Windows::UI::Xaml::Media::Animation;
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using namespace Windows::UI::Xaml::Navigation;
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// The Blank Application template is documented at http://go.microsoft.com/fwlink/?LinkID=391641
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/// <summary>
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/// Initializes the singleton application object. This is the first line of authored code
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/// executed, and as such is the logical equivalent of main() or WinMain().
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/// </summary>
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App::App()
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{
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InitializeComponent();
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Suspending += ref new SuspendingEventHandler(this, &App::OnSuspending);
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}
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/// <summary>
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/// Invoked when the application is launched normally by the end user. Other entry points
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/// will be used when the application is launched to open a specific file, to display
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/// search results, and so forth.
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/// </summary>
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/// <param name="e">Details about the launch request and process.</param>
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void App::OnLaunched(LaunchActivatedEventArgs^ e)
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{
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#if _DEBUG
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if (IsDebuggerPresent())
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{
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DebugSettings->EnableFrameRateCounter = true;
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}
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#endif
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auto rootFrame = dynamic_cast<Frame^>(Window::Current->Content);
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// Do not repeat app initialization when the Window already has content,
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// just ensure that the window is active.
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if (rootFrame == nullptr)
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{
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// Create a Frame to act as the navigation context and associate it with
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// a SuspensionManager key
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rootFrame = ref new Frame();
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// TODO: Change this value to a cache size that is appropriate for your application.
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rootFrame->CacheSize = 1;
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if (e->PreviousExecutionState == ApplicationExecutionState::Terminated)
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{
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// TODO: Restore the saved session state only when appropriate, scheduling the
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// final launch steps after the restore is complete.
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}
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// Place the frame in the current Window
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Window::Current->Content = rootFrame;
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}
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if (rootFrame->Content == nullptr)
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{
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// Removes the turnstile navigation for startup.
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if (rootFrame->ContentTransitions != nullptr)
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{
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_transitions = ref new TransitionCollection();
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for (auto transition : rootFrame->ContentTransitions)
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{
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_transitions->Append(transition);
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}
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}
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rootFrame->ContentTransitions = nullptr;
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_firstNavigatedToken = rootFrame->Navigated += ref new NavigatedEventHandler(this, &App::RootFrame_FirstNavigated);
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// When the navigation stack isn't restored navigate to the first page,
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// configuring the new page by passing required information as a navigation
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// parameter.
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if (!rootFrame->Navigate(MainPage::typeid, e->Arguments))
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{
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throw ref new FailureException("Failed to create initial page");
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}
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}
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// Ensure the current window is active
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Window::Current->Activate();
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}
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/// <summary>
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/// Restores the content transitions after the app has launched.
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/// </summary>
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void App::RootFrame_FirstNavigated(Object^ sender, NavigationEventArgs^ e)
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{
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auto rootFrame = safe_cast<Frame^>(sender);
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TransitionCollection^ newTransitions;
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if (_transitions == nullptr)
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{
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newTransitions = ref new TransitionCollection();
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newTransitions->Append(ref new NavigationThemeTransition());
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}
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else
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{
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newTransitions = _transitions;
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}
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rootFrame->ContentTransitions = newTransitions;
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rootFrame->Navigated -= _firstNavigatedToken;
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}
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/// <summary>
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/// Invoked when application execution is being suspended. Application state is saved
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/// without knowing whether the application will be terminated or resumed with the contents
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/// of memory still intact.
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/// </summary>
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void App::OnSuspending(Object^ sender, SuspendingEventArgs^ e)
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{
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(void) sender; // Unused parameter
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(void) e; // Unused parameter
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// TODO: Save application state and stop any background activity
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} |