c++-cx

Earlier this week, Kenny Kerr presented C++/WinRT at CppCon 2016 1 . It is a Standard C++ projection for the Windows Runtime, based on Modern . As far as I understand, the C++/CX compiler/preprocessor/code generator doesn't touch Standard C++ code, and with C++/WinRT being a Standard C++ library it is my naïve interpretation, that both C++/CX and C++/WinRT can be used in the same project. Questions: First things first: Is my naïve interpretation correct? If so, can C++/CX and C++/WinRT be used in the same compilation unit? At what granularity can C++/CX and C++/WinRT be mixed, in case they

I have searched this up rather a lot, but come up with no helpful results. I am currently trying to program simple DirextX game for Windows 8 Metro, and have come across _In_ rather a lot. I'm just wondering what it is. Also, I have seen a lot of the use of ^ as the pointer * which I found odd. On top of this, some classes have an interface of ref class MyClass , which I believe is for C# legibility. Anyway, any help would be brilliant. James McNellis It is a SAL annotation , used for code analysis. The annotations themselves are defined as macros that, in normal builds, expand to nothing. The

I'm interested in calling a C# method from C++ code in Windows Phone 8. I have already learned how to pass a callback function to C++ code from C# via delegate declarations in my C++ code, but I am looking to see if I can do any of the following: Call certain methods directly from the C++ code. This would involve somehow inspecting the C# object makeup from C++, and seems unlikely to me, but I thought I'd ask you all anyway Trigger events in the C# code, which can then be handled by C# methods Use a dispatcher to call C# callbacks in the Main UI thread so that the callbacks can modify UI

In the below example, a call to HandleChangesAsync is made from within an asynchronous task, and via an event handler. Question - Is there a way to ensure that only one thread can execute the HandleChangesAsync create_task + task continuation blocks at a time (even if the task continuation blocks invoke other async functions)? Note that I can't just use a synchronization primitive because HandleChangesAsync can return before the async operations complete. void MyClass::DoStuffAsync() { WeakReference weakThis(this); create_task(DoMoreStuffAsync()) .then([weakThis]()) { auto strongThis =

I have this XAML to display a ListView in a C++/CX code. The ListView will be used as a selection menu. <ListView x:Name="itemsListView" ItemsSource="{Binding Source={StaticResource MenuDataSourceCVS}}" HorizontalAlignment="Stretch" Width="230" Margin="0,45,0,0" VerticalAlignment="Top" Grid.Row="1" SelectionChanged="itemsListView_SelectionChanged" SelectionMode="Single" HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch" FontFamily="Global User Interface"> <ListView.ItemTemplate> <DataTemplate> <StackPanel Orientation="Horizontal" Height="40" Width="230"> <TextBlock Text="

How do I convert the contents of a Platform::String to be used by functions that expect a char* based string? I'm assuming WinRT provides helper functions for this but I just can't find them. Thanks! Platform::String::Data() will return a wchar_t const* pointing to the contents of the string (similar to std::wstring::c_str() ). Platform::String represents an immutable string, so there's no accessor to get a wchar_t* . You'll need to copy its contents, e.g. into a std::wstring , to make changes. There's no direct way to get a char* or a char const* because Platform::String uses wide characters