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Accessing CEdit in CComboBox

Posted on 1998-03-09
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Last Modified: 2013-11-20
How can I access the edit control of a combo box ? I need to set the ES_READONLY style.

Thanks
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Question by:xn12z9i
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6 Comments
 
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Tommy Hui earned 50 total points
ID: 1316841
Then why not use a CBS_DROPLIST?
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by:xn12z9i
ID: 1316842
That seems to do the trick. However, now my recordset won't update to the combo box. Any ideas ?

Thanks!
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LVL 4

Expert Comment

by:jtwine100697
ID: 1316843
  Maybe xn12z9i wants to be able to preform clipboard operations on it?

   Try using a value of 1001 (0x3E9) to get the Child Edit Control of a ComboBox.

   
   CEdit   *pWnd = NULL;

   pWnd = (CEdit*)m_cbMyComboBox.GetDlgItem( 1001 );
   if( pWnd )
      pWnd -> SetReadOnly( TRUE );

   
   That will make the edit control ReadOnly.  Note that it will then take on a grey/disabled background.

   Note:  I do not need any lectures on the casting of the CWnd pointer to a CEdit.  I know the dangers, and it is safe for this use.

-=- James.
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LVL 4

Expert Comment

by:jtwine100697
ID: 1316844
  The only problem you might have is that the control will look "disabled".  You should be able to subclass the edit control, and then handle its painting, if needed.

-=- James.
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Author Comment

by:xn12z9i
ID: 1316845
Doing the GetDlgItem( 1001 ) did the trick.  Where did you find that particular trick ?  (e-mail me: mccarty.mj@mellon.com)

BTW, does anyone know why the CRecordset did not update the combo box with the CBS_DROPDOWNLIST style ?

Thanks to all !!
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LVL 4

Expert Comment

by:jtwine100697
ID: 1316846
  Note that after you accept an answer, people cannot comment without first paying to "see" the answer...

   (I am going to post a question to customer service about this...)

   If you examine the control with Spy++, you will notice that all of the Edit controls of ComboBoxes have the ID of 1001.  That is all there is to it!

-=- James.
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