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POLYGON Sample: The ATL Tutorial

The POLYGON sample shows how to implement custom properties, events, a property page, and object safety for an ATL control. Go through the ATL Tutorial to create this control step by step.

The POLYGON attributes sample is the attributed version of this sample.

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 this sample

  1. Open the solution file Polygon.sln.

  2. From the Build menu, click Build.

  3. After the sample builds, open PolyCtl.htm in your Web browser and try out the Polygon control. If you click inside the polygon, the number of sides increases. If you click outside the polygon, the number of sides decreases.

You can test the Polygon control in the ActiveX Control Test Container. For details on accessing Test Container and using it to test a control, see Testing Properties and Events with Test Container.

This sample uses the following keywords:

ATLASSERT; ATLTRACE; auxWireSphere; BEGIN_COM_MAP; BEGIN_CONNECTION_POINT_MAP; BEGIN_MSG_MAP; BEGIN_OBJECT_MAP; BEGIN_PROPERTY_MAP; CComCoClass; CComControl; CComModule::GetClassObject; CComModule::GetLockCount; CComModule::Init; CComModule::RegisterServer; CComModule::Term; CComModule::UnregisterServer; CComObjectRoot; ChoosePixelFormat; CoTaskMemAlloc; CreateContext; CreateRGBPalette; DECLARE_GET_CONTROLLING_UNKNOWN; DECLARE_REGISTRY_RESOURCEID; DeleteObject; DescribePixelFormat; DisableThreadLibraryCalls; DrawText; END_CONNECTION_POINT_MAP; END_OBJECT_MAP; FireViewChange; GetClientRect; GetPixelFormat; glBegin; glClear; glClearColor; glClearDepth; glColor3f; glEnable; glEnd; glFinish; glLoadIdentity; glMatrixMode; glPopMatrix; glPushMatrix; glRotatef; glTranslatef; gluPerspective; glVertex3f; IDispatchImpl; IObjectSafetyImpl; IOleControlImpl; IOleInPlaceActiveObjectImpl; IOleInPlaceObjectWindowlessImpl ; IOleObjectImpl; IPersistStorageImpl; IPersistStreamInitImpl; IViewObjectExImpl; joyReleaseCapture; joySetThreshold; memcpy; OBJECT_ENTRY; PIXELFORMATDESCRIPTOR; RealizePalette; ReleaseCapture; SelectPalette; SetBkMode; SetCapture; SetTextColor; SwapBuffers; USES_CONVERSION; wglCreateContext; wglDeleteContext; wglGetCurrentDC; wglMakeCurrent

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