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Home > Forums > Programmers > Development Tools > Microsoft: Visual C++ Forum

Updating a Static control

thread116-1531100
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HyperEngineer (Programmer)
16 Feb 09 17:39
I have an application that starts a thread.  In that thread I open a dialog box in modal mode.  Then I try to update a Static control.  Here are some code snippets.

This is in the main dialog:

CODE

CTest Test;
hTestSequenceThread = (HANDLE)_beginthread(Test.TestSequencer, 0, (void*)this);

This is in Test.TestSequencer:

CODE

CLed LED;
INT_PTR nResponse = LED.DoModal;

Then in the child dialog box in a function called by the constructor:

CODE

CStatic* promptmessage;
promptmessage = (CStatic*)GetDlgItem(IDC_PROMPT);
promptmessage->SetWindowTextA("Prompt Message");
The GetDlgItem() line gives and assertion

Alternatively, I added a member variable m_Prompt then used the following in the function:

CODE

m_Prompt = "Prompt Message";
UpdateData(FALSE);
Here the UpdateData() function gave and assertion.

How do I access the controls in the child window from the child window?

Thanks,

HyperEngineer
If it ain't broke, it probably needs improvement.

victorv (Vendor)
25 Feb 09 15:38
hi,
Static is "static" !

Workaround this, using a normal Edit control,
removing box (frame) and setting backgrond as the dialogbox:
declare it read-only, no tabstop. winky smile

ciao
vittorio
level2programmer (Programmer)
15 May 09 11:59
Don't do it in the constructor.  Do it OnInitDlg().  The objects don't necessairly exist yet.
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