I have been messing around with making a windows application in Dev-C I wanted to make it in a single source file, rather than a project to see if it worked. It did, other than the fact that I got the windows app, AND a DOS prompt behind it. Is there anyway to remove the DOS prompt? I will include the code, so that you can see what I mean. C/CX is Microsoft’s language extension for C that allows it to target the Windows Runtime that was released with Windows 8 and continues to evolve with Windows 10. The Windows Runtime Library is a template library that provides a low-level way to author and use Windows Runtime components.

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I have been messing around with making a windows application in Dev-C++ I wanted to make it in a single source file, rather than a project to see if it worked. It did, other than the fact that I got the windows app, AND a DOS prompt behind it. Is there anyway to remove the DOS prompt? I will include the code, so that you can see what I mean.

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What's your project type? Did you specify a Win32 application in the project wizard?

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Important

This tutorial uses C++/CX. Microsoft has released C++/WinRT: an entirely standard modern C++17 language projection for Windows Runtime (WinRT) APIs. For more information on this language, please see C++/WinRT.

With Microsoft Visual Studio, you can use C++/CX to develop an app that runs on Windows 10 with a UI that's defined in Extensible Application Markup Language (XAML).

Note

This tutorial uses Visual Studio Community 2019. If you are using a different version of Visual Studio, it may look a little different for you.

Before you start

To complete this tutorial, you must use Visual Studio Community, or one of the non-Community versions of Visual Studio, on a computer that's running Windows 10. To download, see Get the tools.
We assume you have a basic understanding of C++/CX, XAML, and the concepts in the XAML overview.
We assume you're using the default window layout in Visual Studio. To reset to the default layout, on the menu bar, choose Window > Reset Window Layout.

Comparing C++ desktop apps to Windows apps

If you're coming from a background in Windows desktop programming in C++, you'll probably find that some aspects of writing apps for the UWP are familiar, but other aspects require some learning.

What's the same?

You can use the STL, the CRT (with some exceptions), and any other C++ library as long as the code only calls Windows functions that are accessible from the Windows Runtime environment.
If you're accustomed to visual designers, you can still use the designer built into Microsoft Visual Studio, or you can use the more full-featured Blend for Visual Studio. If you're accustomed to coding UI by hand, you can hand-code your XAML.
You're still creating apps that use Windows operating system types and your own custom types.
You're still using the Visual Studio debugger, profiler, and other development tools.
You're still creating apps that are compiled to native machine code by the Visual C++ compiler. UWP apps in C++/CX don't execute in a managed runtime environment.

What's new?

The design principles for UWP apps and Universal Windows apps are very different from those for desktop apps. Window borders, labels, dialog boxes, and so on, are de-emphasized. Content is foremost. Great Universal Windows apps incorporate these principles from the very beginning of the planning stage.
You're using XAML to define the entire UI. The separation between UI and core program logic is much clearer in a Windows Universal app than in an MFC or Win32 app. Other people can work on the appearance of the UI in the XAML file while you're working on the behavior in the code file.
You're primarily programming against a new, easy-to-navigate, object-oriented API, the Windows Runtime, although on Windows devices Win32 is still available for some functionality.
You use C++/CX to consume and create Windows Runtime objects. C++/CX enables C++ exception handling, delegates, events, and automatic reference counting of dynamically created objects. When you use C++/CX, the details of the underlying COM and Windows architecture are hidden from your app code. For more information, see C++/CX Language Reference.
Your app is compiled into a package that also contains metadata about the types that your app contains, the resources that it uses, and the capabilities that it requires (file access, internet access, camera access, and so forth).
In the Microsoft Store and Windows Phone Store your app is verified as safe by a certification process and made discoverable to millions of potential customers.

Hello World Store app in C++/CX

Our first app is a 'Hello World' that demonstrates some basic features of interactivity, layout, and styles. We'll create an app from the Windows Universal app project template. If you've developed apps for Windows 8.1 and Windows Phone 8.1 before, you might remember that you had to have three projects in Visual Studio, one for the Windows app, one for the phone app, and another with shared code. The Windows 10 Universal Windows Platform (UWP) makes it possible to have just one project, which runs on all devices, including desktop and laptop computers running Windows 10, devices such as tablets, mobile phones, VR devices and so on.

We'll start with the basics:

How to create a Universal Windows project in Visual Studio.
How to understand the projects and files that are created.
How to understand the extensions in Visual C++ component extensions (C++/CX), and when to use them.

First, create a solution in Visual Studio

In Visual Studio, on the menu bar, choose File > New > Project....
In the Create a new project dialog box, select Blank App (Universal Windows - C++/CX). If you don't see this option, make sure you have the Universal Windows App Development Tools installed. See Get set up for more information.

Choose Next, and then enter a name for the project. We'll name it HelloWorld.
Choose the Create button.

Note

If this is the first time you have used Visual Studio, you might see a Settings dialog asking you to enable Developer mode. Developer mode is a special setting that enables certain features, such as permission to run apps directly, rather than only from the Store. For more information, please read Enable your device for development. To continue with this guide, select Developer mode, click Yes, and close the dialog.

Your project files are created.

Before we go on, let's look at what's in the solution.

About the project files

Every .xaml file in a project folder has a corresponding .xaml.h file and .xaml.cpp file in the same folder and a .g file and a .g.hpp file in the Generated Files folder, which is on disk but not part of the project. You modify the XAML files to create UI elements and connect them to data sources (DataBinding). You modify the .h and .cpp files to add custom logic for event handlers. The auto-generated files represent the transformation of the XAML markup into C++/CX. Don't modify these files, but you can study them to better understand how the code-behind work

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