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Getting text from a one line CEdit Control

curtisn
curtisn asked
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Medium Priority
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Last Modified: 2013-11-20
How do you get the text out of a CEdit Control?  I have tried using GetWindowText but that always returns NULL.
I am using add printer wizard and am trying to get the name of the printer on about the 5th page  I've used spy++ and have been able to get a handle to the CEdit window, then I  called Getline off of that, and it works in Debug mode but not release.  Any ideas on how to solve this so I can get the text

Thanks
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Commented:
It's not obvious is it?  I struggled for over half a day the first time I had to do this.  The answer is

CString cszBuffer;
int iCnt = m_ctrlEditShow.GetLine(0,cszBuffer.GetBuffer(10),10);
cszBuffer.ReleaseBuffer();

In this case I knew I never needed more than 10 characters, you may need to change that slightly

Commented:
I should add that I used the GetDlgItem function to attach the CEdit m_ctrlEditShow member variable to the Edit box of interest.  I'd be very careful using spy to get the handle, I think that will vary from run to run.

Commented:
My favorite answer is to assign a CString member variable to it and call UpdateData( TRUE ) to retrieve the data.

Phillip

Author

Commented:
Now for the tricky part, I don't have the resource for this edit control.  I get the handle to some unknown window and there is an edit control in it, I've tried the method from jstolan but I can't get that to work.  Can I assign the CString to it if I don't own it?

Commented:
Absolutely.  If you can get a CWnd* to it, and you know it's a CEdit, then cast it to a CEdit*.

Phillip

Commented:
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Commented:
Thanks that was what I needed, I tried all those other ways but they just wouldn't work, I'll have to remember to go in the back side of MFC

curtis
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