Calculator Sample: Windows Forms Pocket Calculator

The Calculator sample implements a simple pocket calculator using C++ and the .NET Framework Windows Forms classes. It demonstrates using .NET Framework classes to write a user-interface without the support of the resource editors, and illustrates the following concepts:

  • Working with forms, menus, edit fields, buttons, and icons for forms

  • Manipulating managed arrays

  • Using delegates/event handlers

  • Exception handling

  • Using enums

  • Conversions between the .NET Framework String, Double, and Char classes

Security noteSecurity Note

This sample code is intended to illustrate a concept, and it shows only the code that is relevant to that concept. It may not meet the security requirements for a specific environment, and it should not be used exactly as shown. We recommend that you add security and error-handling code to make your projects more secure and robust. Microsoft provides this sample code "AS IS" with no warranties.

To get samples and instructions for installing them:

To access samples from Visual Studio

  • On the Help menu, click Samples.

    By default, these samples are installed in drive:\Program Files\Microsoft Visual Studio 10.0\Samples\.

  • For the most recent version of this sample and a list of other samples, see Visual Studio Samples on the MSDN Web site.

To build and run Calculator using Visual Studio

  1. In the Visual Studio IDE, load the solution file calc.sln.

  2. In Solution Explorer, right-click the Calc solution.

  3. On the shortcut menu, click Build.

  4. Run the resulting application and try out various operations with the calculator.

This sample demonstrates the following classes:

Form; TextBox; Button; Icon; MainMenu; MenuItem; MessageBox; Exception; FileNotFoundException; Size structure; Font

This sample demonstrates the following keywords:

__gc; __value; enum; add_KeyPress; KeyPressEventHandler; EventHandler; __try_cast; EventArgs; KeyPressEventArgs; FormStartPosition; FormBorderStyle; SizeGripStyle; BorderStyle; SystemColors; HorizontalAlignment; FlatStyle; add_Click

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