SAMPLE: ColorFrm Demonstrates ActiveX Control with Popup Toolba

• Microsoft Visual C++, 32-bit Editions, versions 4.0, 4.0a, 4.1, 4.2, 4.2b, 5.0

SUMMARY

The ColorFrm sample demonstrates adding a popup toolbar to an ActiveX Control. ColorFrm uses a CMiniFrameWnd derived class to contain the toolbar that is visible whenever the control is UI Active. When the control is no longer active, the toolbar is hidden and its position is saved.

The ColorFrm sample details which COleControl functions must be overridden to achieve this behavior. The sample also demonstrates some other basic ActiveX Control functionality, such as an OnDraw function that renders differently based on the AmbientUserMode of the control.

The following file is available for download from the Microsoft Software Library:

 ~ ColorFrm.exe (size: 61128 bytes) 

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MORE INFORMATION

It is often useful to add a popup toolbar to an ActiveX Control that can be used to provide a user interface to the control. In most cases, you do not want the toolbar to be visible if the control is not UI Active because there may be other controls on the dialog or form. The ColorFrm sample demonstrates how to add a CMiniFrameWnd class and toolbar to an ActiveX Control.

The steps listed below outline the process used to create a popup toolbar that hides itself when its parent control is not UI Active:

1. Create a basic ActiveX Control using the ControlWizard.

2. Add a new class to the control project that is derived from CMiniFramWnd. An object of this class will contain the toolbar.

3. Create the CMiniFrameWnd derived object in the OnCreate function for the ActiveX Control.

4. Insert a toolbar resource into the ActiveX Control project.

5. Override OnCreate for the CMiniFrameWnd derived class and use LoadFrame() to create the toolbar.

6. Override the functions listed below to achieve the desired showing / hiding behavior for the toolbar. Please refer to the sample code for more details.

   - OnShowToolBars()

   - OnHideToolBars()

Keywords          : MfcOLE
Technology        : kbMfc kbole
Version           : WINNT:4.0,4.0a,4.1,4.2,4.2b,5.0;
Platform          : NT WINDOWS
Issue type        : kbfile
Solution Type     : kbsample