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mfc mdi .net toolbar

Posted on 2005-03-16
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Last Modified: 2013-11-25
I have the standard mfc toolbar created when you make a new mdi project. I added three new buttons using the resource editor. When i run the pgrogram they apper disabled. I tried to enable them with:

m_wndToolBar.SetButtonStyle(9, m_wndToolBar.GetButtonStyle(9) & ~TBBS_DISABLED);

and it works for a split second then reverts to being disabled.

Thanks.
Aidan.
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Question by:as2003
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3 Comments
 
LVL 48

Expert Comment

by:AlexFM
ID: 13562701
Toolbar button are automatically disabled if there is no commanf handler for them. Add handlers and they will be enanled.
To enable/disable toolbar buttons use ON_UPDATE_UI handlers.
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Author Comment

by:as2003
ID: 13567769
Yeah, I found that in the documentation, but I don't know how to use/create/manipulate/find/etc ON_UPDATE_UI handlers
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Accepted Solution

by:
AlexFM earned 500 total points
ID: 13571894
Select class where you want to handle toolbar messages in the Class View . For example, this can be CMainFrame class. In the Properties window click Events tag. Find button ID in the list and expand it. Select  ON_UPDATE_UI item and select handler name from combobox. Fill handler:

void CMainFrame::OnUpdateMyCommand(CCmdUI *pCmdUI)
{
    pCmdUI->Enable(TRUE);   // instead of TRUE you can use some class member
}

See details in the CCmdUI class description.
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