CIRC Sample: ActiveX Control
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CIRC Sample: ActiveX Control

The CIRC sample is a simple example of an ActiveX Control.

CIRC illustrates the following:

  • Changing the painting behavior of an ActiveX control

  • Adding stock properties

  • Adding custom properties

  • Responding to mouse events

  • Adding custom events

  • Using text and fonts

  • Implementing ActiveX control property pages

  • Using simple data binding for control properties

Security noteSecurity Note:

This sample code is provided to illustrate a concept and should not be used in applications or Web sites, as it may not illustrate the safest coding practices. Microsoft assumes no liability for incidental or consequential damages should the sample code be used for purposes other than as intended.

To get samples and instructions for installing them:

  • On the Visual Studio Help menu, click Samples.

    For more information, see Visual Studio Samples.

  • The most recent version and complete list of samples is available online from the Visual Studio 2008 Samples page.

  • You can also locate samples on your computer's hard disk. By default, samples and a Readme file are copied into a folder under \Program Files\Visual Studio 9.0\Samples\. For Express editions of Visual Studio, all samples are located online.

To build and run the CIRC sample

  1. Open the solution Circ.sln.

  2. On the Build menu, click Build.

See Controls Samples for details on adding a control to the Toolbox, manually registering a control, and using the ActiveX Control Test Container.

The CIRC sample demonstrates the following keywords:

AfxGetInstanceHandle; CDC::Ellipse; CDC::SelectObject; CDC::SelectStockObject; CDialog::DoModal; CString::AllocSysString; CString::GetLength; Ellipse; ExtTextOut; FillRect; GetClientRect; GetDC; GetVersion; MAKELONG; RGB; ReleaseDC; SelectObject; SetBkMode; SetTextAlign; SetTextColor


Some of the samples, such as this one, have not been modified to reflect the changes in the Visual C++ wizards, libraries, and compiler, but still demonstrate how to complete your desired task.

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