Thread: Edit Box not updating in MFC App

Can anyone tell me why the following does not work? Do I need to call an update function. No errors are displayed and the program runs and compiles but IDC_dept is always blank.


SetDlgItemText(GetForegroundWindow(), IDC_dept, "AAA");


Thanks,,

Apologetic disclaimer: I don't use mfc.

1. Probably because GetForegroundWindow is not returning the handle of your edit cntrl - or the class fn 'SetDlgItemText' is being called with insufficient params.

2. If you are using mfc then you should use the class methods:

MyCEditThing.SetDlgItemText(IDC_dept, "AAA");

or MyCEditThing->SetDlgItemText(IDC_dept, "AAA");

depending on how you initialised MyCEditThing.

3. If you still want to use the API fn (note scope resolution operator):

::SetDlgItemText(MyCEdit.m_hWnd,IDC_dept, "AAA");

or ::SetDlgItemText(::GetDlgItem(hParent,IDC_dept),ID C_dept, "AAA");

etc.

Hope that helps some.

I dont have anything close to CeditThing. I have 3 classes App, DLG and a custom class I created myself.

I tried your other suggestions but they did not work. Also GetLastError() returns 0 on the original code!


Any more ideas? this is a simple dialog (form based) app..

Could someone post some sample code so I can try and figure it out.

Thk,,

So you are not using CEdit as an object wrapper around your edit cntrl then? ('CeditThing' was a pseudocode placeholder for the name you might have chosen for a CEdit object - forgive me for assuming that you would have realised this).

What's the point of using mfc if you aren't using its 'features'?
Use win32 API instead.

Here's the code (again):

SetDlgItemText(GetDlgItem(hParent,IDC_dept),ID
C_dept, "AAA");

If that doesn't work to place the text "AAA" in the edit cntrl with id=IDC_dept and parent wnd handle of 'hParent' (YOU must supply this) - then you are very probably doing something wrong.

Where exactly in your program are you attempting to set the cntrl's text?

Actually this should do it:

In your dialog's 'OnInitDialog()' function place:

SetDlgItemText(IDC_dept,"some text");