Remove selection from initialized text (Deselect) in CEdit control

I am initializing a CEdit control in MFC with a string using DDX.  Normally, this string is selected when the dialog box opens.  I need to stop this behavior and have no selection.  Usually this is easy:

m_myEdit.SetSel(-1, 0, false);

However, initialization seems to be a special case.  I've tried placing the above line in CDialog::DoDataExchange, CDialog::OnInitDialog, and CEdit::OnSetfocus without any success.

I've also tried subclassing CEdit as "CSelEdit" using this in OnInitDialog()...:
m_mySelEdit.SubclassDlgItem(IDC_MYEDIT, this);
..and the ON_CONTROL_REFLECT macro in the CSelEdit class.

Can you recommend a modification of one of these methods, or an entirely new approach, in order to simply deselect initialized text in a CEdit control?
Who is Participating?

Improve company productivity with a Business Account.Sign Up

Jaime OlivaresConnect With a Mentor Software ArchitectCommented:
The problem is in the Edit's focus event.
You can make a test:
Go to ClassWizard, select your dialog class, and select the Edit item, let say ID_EDIT_1.
Now select the EN_SETFOCUS notify and create an event handler for it, let say OnSetfocusEdit1.
Now implement the event:

void CYourDlg::OnSetfocusEdit1()
       ((CEdit *)GetDlgItem(ID_EDIT_1))->SetSel(-1, 0, false);
Jaime OlivaresSoftware ArchitectCommented:
Also maybe you will need an initial "deselection" at the end of OnInitDialog event.
Alkali_GuyAuthor Commented:
Jaime: Thanks for the suggestion, but although SetSel(...) is executed, the text ends up selected anyway.

Note that if you tab through the controls back to ID_EDIT_1 again, the selection goes away properly.  It's only on initialization that it fails.  I don't know if this matters, but the DDX member is a CString rather than a CEdit object for the text box.

Maybe a SetFocus() is needed?  Or maybe there's a way to intercept any EM_SETSEL message that could be causing the problem.
Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Jaime OlivaresSoftware ArchitectCommented:
I have implemented my solutions and works ok, with a CString member. As I told you, the selection is made at the focus event, it is not related to the CString.
When dialog is initialized, the focus is set to the first control in "tab order" list. At this point, the focus event is "trapped" by your event handler and selection is cancelled.

Alkali_GuyAuthor Commented:
Does anything need to be done in OnInitDialog() for this to work?
Alkali_GuyAuthor Commented:
[In the forum on this page there is a comment about a similar problem (although it's for PocketPC):]
Jaime OlivaresSoftware ArchitectCommented:
>Does anything need to be done in OnInitDialog() for this to work?
I think no. I have tried.
Alkali_GuyAuthor Commented:
I discovered the malfunction.  I use SetWindowPos() in OnInitDialog() to resize it, which requires a change so that OnInitDialog() returns FALSE.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.