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Updating CPP and CS winui instancing samples. #235
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53 changes: 53 additions & 0 deletions
53
...fecycle/Instancing/cpp-winui-packaged/CppWinUiDesktopInstancing/ActivationTrackerHelper.h
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| #pragma once | ||
| #include <Windows.h> | ||
| #include <wil/result.h> | ||
| #include <memory> | ||
| #include <string> | ||
| #include <string_view> | ||
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| constexpr std::wstring_view c_redirectionKeyName{ L"SOFTWARE\\AppLifecycleExample"}; | ||
| constexpr std::wstring_view c_redirectionValueName{ L"NumberOfActivations" }; | ||
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| inline wil::unique_hkey GetRegistryKey() | ||
| { | ||
| wil::unique_hkey keyToRedirectionTracker{}; | ||
| THROW_IF_WIN32_ERROR(RegCreateKeyEx(HKEY_CURRENT_USER, c_redirectionKeyName.data(), 0, nullptr, REG_OPTION_VOLATILE, KEY_ALL_ACCESS, nullptr, keyToRedirectionTracker.put(), nullptr)); | ||
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| return std::move(keyToRedirectionTracker); | ||
| } | ||
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| inline void SetNumberOfActivations(DWORD newNumberOfActivations) | ||
| { | ||
| auto keyToRedirectionTracker{GetRegistryKey()}; | ||
| THROW_IF_WIN32_ERROR(RegSetValueEx(keyToRedirectionTracker.get(), c_redirectionValueName.data(), 0, REG_DWORD, reinterpret_cast<const BYTE*>(&newNumberOfActivations), sizeof(newNumberOfActivations))); | ||
| } | ||
|
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| inline DWORD GetNumberOfActivations() | ||
| { | ||
| DWORD numberOfActivations = 0; | ||
| auto instanceTrackerKey = GetRegistryKey(); | ||
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| DWORD sizeOfEntry{}; | ||
| auto getResult{ RegQueryValueEx(instanceTrackerKey.get(), c_redirectionValueName.data(), nullptr, nullptr, reinterpret_cast<byte*>(&numberOfActivations), &sizeOfEntry) }; | ||
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| if (getResult == ERROR_FILE_NOT_FOUND) | ||
| { | ||
| THROW_IF_WIN32_ERROR(RegSetValueEx(instanceTrackerKey.get(), c_redirectionValueName.data(), 0, REG_DWORD, reinterpret_cast<byte*>(&numberOfActivations), sizeof(numberOfActivations))); | ||
| return numberOfActivations; | ||
| } | ||
| else if (getResult != ERROR_MORE_DATA) | ||
| { | ||
| THROW_WIN32(getResult); | ||
| } | ||
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| THROW_IF_WIN32_ERROR(RegQueryValueEx(instanceTrackerKey.get(), c_redirectionValueName.data(), nullptr, nullptr, reinterpret_cast<BYTE*>(&numberOfActivations), &sizeOfEntry)); | ||
| return numberOfActivations; | ||
| } | ||
|
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| inline DWORD IncrementNumberOfRedirections() | ||
| { | ||
| auto numberOfActivations{GetNumberOfActivations()}; | ||
| numberOfActivations++; | ||
| SetNumberOfActivations(numberOfActivations); | ||
| return numberOfActivations; | ||
| } |
3 changes: 3 additions & 0 deletions
3
Samples/AppLifecycle/Instancing/cpp-winui-packaged/CppWinUiDesktopInstancing/App.idl
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,3 @@ | ||
| namespace CppWinUiDesktopInstancing | ||
| { | ||
| } |
3 changes: 1 addition & 2 deletions
3
...ancing/CppWinUiDesktopInstancing/App.xaml → ...ckaged/CppWinUiDesktopInstancing/App.xaml
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83 changes: 83 additions & 0 deletions
83
Samples/AppLifecycle/Instancing/cpp-winui-packaged/CppWinUiDesktopInstancing/App.xaml.cpp
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,83 @@ | ||
| #include "pch.h" | ||
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| #include "App.xaml.h" | ||
| #include "MainWindow.xaml.h" | ||
| #include "ActivationTrackerHelper.h" | ||
| #include <winrt/Microsoft.Windows.AppLifecycle.h> | ||
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| using namespace winrt; | ||
| using namespace Windows::Foundation; | ||
| using namespace winrt::Microsoft::UI::Xaml; | ||
| using namespace winrt::Microsoft::UI::Xaml::Controls; | ||
| using namespace winrt::Microsoft::UI::Xaml::Navigation; | ||
| using namespace CppWinUiDesktopInstancing; | ||
| using namespace CppWinUiDesktopInstancing::implementation; | ||
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| // To learn more about WinUI, the WinUI project structure, | ||
| // and more about our project templates, see: http://aka.ms/winui-project-info. | ||
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| /// <summary> | ||
| /// Initializes the singleton application object. This is the first line of authored code | ||
| /// executed, and as such is the logical equivalent of main() or WinMain(). | ||
| /// </summary> | ||
| App::App() | ||
| { | ||
| InitializeComponent(); | ||
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| #if defined _DEBUG && !defined DISABLE_XAML_GENERATED_BREAK_ON_UNHANDLED_EXCEPTION | ||
| UnhandledException([this](IInspectable const&, UnhandledExceptionEventArgs const& e) | ||
| { | ||
| if (IsDebuggerPresent()) | ||
| { | ||
| auto errorMessage = e.Message(); | ||
| __debugbreak(); | ||
| } | ||
| }); | ||
| #endif | ||
| } | ||
|
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| /// <summary> | ||
| /// Invoked when the application is launched normally by the end user. Other entry points | ||
| /// will be used such as when the application is launched to open a specific file. | ||
| /// </summary> | ||
| /// <param name="e">Details about the launch request and process.</param> | ||
| void App::OnLaunched(LaunchActivatedEventArgs const&) | ||
| { | ||
| auto numberOfActivations{ IncrementNumberOfRedirections() }; | ||
| window = make<MainWindow>(); | ||
|
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| // GetInstances also gets the current instance. | ||
| // Meat and potatoes of redirection. | ||
| auto instances = winrt::Microsoft::Windows::AppLifecycle::AppInstance::GetInstances(); | ||
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| // Number will be incorrect if instance (instanceNumber < c_maxNumberOfInstances) is closed. | ||
| // Can be fixed on an OnExit event handler. | ||
| std::wstring windowTitle{L"Instances: "}; | ||
| windowTitle.append(std::to_wstring(instances.Size() - 1)); | ||
| window.Title(windowTitle); | ||
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| // Need activated event args to pass into the redirected instance. | ||
| auto activatedArgs = winrt::Microsoft::Windows::AppLifecycle::AppInstance::GetCurrent().GetActivatedEventArgs(); | ||
| bool isActivationRedirected = false; | ||
| if (instances.Size() > c_maxNumberOfInstances) | ||
| { | ||
| // Time to redirect | ||
| // Choose what instance to redirect to. | ||
| int instanceToRedirectTo = (numberOfActivations % c_maxNumberOfInstances); | ||
| isActivationRedirected = true; | ||
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| // Need to call RedirectActivationToAsync on the instance to redirect to. | ||
| // Not passing in the instance into RedirectionActivationToAsync. | ||
| instances.GetAt(instanceToRedirectTo).RedirectActivationToAsync(activatedArgs).GetResults(); | ||
| } | ||
|
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| if (isActivationRedirected) | ||
| { | ||
| this->Exit(); | ||
| } | ||
| else | ||
| { | ||
| window.Activate(); | ||
| } | ||
| } |
17 changes: 17 additions & 0 deletions
17
Samples/AppLifecycle/Instancing/cpp-winui-packaged/CppWinUiDesktopInstancing/App.xaml.h
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,17 @@ | ||
| #pragma once | ||
|
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| #include "App.xaml.g.h" | ||
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| namespace winrt::CppWinUiDesktopInstancing::implementation | ||
| { | ||
| struct App : AppT<App> | ||
| { | ||
| const DWORD c_maxNumberOfInstances{ 2 }; | ||
| App(); | ||
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| void OnLaunched(Microsoft::UI::Xaml::LaunchActivatedEventArgs const&); | ||
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| private: | ||
| winrt::Microsoft::UI::Xaml::Window window{ nullptr }; | ||
| }; | ||
| } |
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