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Resize a combo box to a form view

Posted on 2002-06-26
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Last Modified: 2013-11-20
How do I Resize a combo box to a form view? What message handler should I use?
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Question by:skibud2
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4 Comments
 

Author Comment

by:skibud2
ID: 7110739
I basically want the combobox to be the size of the form view (or a little less). The formview can be resized.
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Accepted Solution

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gurly earned 100 total points
ID: 7110822
use theh WM_SIZE message.
It should look something like that:

in your .h file:
     //{{AFX_DATA(CYourView)
     enum { IDD = IDD_YOUR_FORM };
     CComboBox     m_oCombo;
     //}}AFX_DATA

in your .cpp file:

void CYourView::DoDataExchange(CDataExchange* pDX)
{
     CFormView::DoDataExchange(pDX);
     //{{AFX_DATA_MAP(CYourView)
     DDX_Control(pDX, IDC_COMBO1, m_oCombo);
     //}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CYourView, CFormView)
     //{{AFX_MSG_MAP(CResizingView)
     ON_WM_SIZE()
     //}}AFX_MSG_MAP
END_MESSAGE_MAP()

void CYourView::OnSize(UINT nType, int cx, int cy)
{
     CFormView::OnSize(nType, cx, cy);
     
     CRect rc;
     GetClientRect(rc);

     rc.DeflateRect(5, 5);

     if (::IsWindow(m_oCombo.m_hWnd))
          m_oCombo.MoveWindow(rc);
     
}

This will set the combo's width.
If you also want to change the drop down height, check this link:
http://www.experts-exchange.com/questions/Q_20137661.html
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Author Comment

by:skibud2
ID: 7110846
Awesome Answer.. I am just wondering is it possible to use the setWindowPos to do something like this? Thats what I was trying and I was getting a ASSERT Error. I tried
m_combl.SetWindowPos(NULL,10,10,cx-10,cy-10, SWP_NOREDRAW);
Appreciate the help
-Mike
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LVL 1

Expert Comment

by:gurly
ID: 7110865
Where do you place that line and get an ASSERT ?

I tried the same and it worked ok.

maybe you didn't check that the window is alive ?
--->  if (::IsWindow(m_oCombo.m_hWnd))

Glad to be of help, anyway.
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