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POLYGON Attributes Sample: Demonstrates Custom Properties, Events, a Property Page, and Object Safety

The POLYGON attributes sample shows how to implement custom properties, events, a property page, and object safety for an ATL control. The POLYGON sample is the nonattributed version of this sample and is used as the basis of the ATL Tutorial.

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 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 attributes:

coclass, default, dispinterface, dual, event_source, helpstring, id, implements_category, in, module, object, out, pointer_default, progid, propget, propput, registration_script, retval, support_error_info, threading, uuid, version, vi_progid

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

NoteNote

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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