132 lines
4.4 KiB
C++
132 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 VSXaml;
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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::Navigation;
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// The Blank Application template is documented at
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// http://go.microsoft.com/fwlink/?LinkId=234227
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/// <summary>
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/// Initializes the singleton application object. This is the first line of
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/// authored code executed, and as such is the logical equivalent of main()
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/// 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.
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/// Other entry points will be used such as when the application is
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/// launched to open a specific file.
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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(
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Windows::ApplicationModel::Activation::LaunchActivatedEventArgs ^ e)
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{
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#if _DEBUG
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// Show graphics profiling information while debugging.
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if (IsDebuggerPresent()) {
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// Display the current frame rate counters
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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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// 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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// Set the default language
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rootFrame->Language =
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Windows::Globalization::ApplicationLanguages::Languages->GetAt(0);
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rootFrame->NavigationFailed +=
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ref new Windows::UI::Xaml::Navigation::NavigationFailedEventHandler(
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this, &App::OnNavigationFailed);
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if (e->PreviousExecutionState == ApplicationExecutionState::Terminated) {
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// TODO: Restore the saved session state only when appropriate,
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// scheduling the
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// final launch steps after the restore is complete
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}
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if (rootFrame->Content == nullptr) {
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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
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// navigation
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// parameter
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rootFrame->Navigate(TypeName(MainPage::typeid), e->Arguments);
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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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// Ensure the current window is active
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Window::Current->Activate();
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} else {
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if (rootFrame->Content == nullptr) {
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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
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// navigation
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// parameter
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rootFrame->Navigate(TypeName(MainPage::typeid), e->Arguments);
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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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}
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/// <summary>
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/// Invoked when application execution is being suspended. Application state
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/// is saved without knowing whether the application will be terminated or
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/// resumed with the contents of memory still intact.
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/// </summary>
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/// <param name="sender">The source of the suspend request.</param>
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/// <param name="e">Details about the suspend request.</param>
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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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}
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/// <summary>
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/// Invoked when Navigation to a certain page fails
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/// </summary>
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/// <param name="sender">The Frame which failed navigation</param>
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/// <param name="e">Details about the navigation failure</param>
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void App::OnNavigationFailed(
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Platform::Object ^ sender,
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Windows::UI::Xaml::Navigation::NavigationFailedEventArgs ^ e)
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{
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throw ref new FailureException("Failed to load Page " +
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e->SourcePageType.Name);
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}
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