How to change color of dialog

Posted on 2006-11-30
Last Modified: 2013-11-20
I have 2 dialogs which are docked to the bottom & left side of my window. These dialogs have a list control & tree control resp. I want to know how to change the color of these dialogs to light blue.
Question by:Anisha
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LVL 44

Accepted Solution

AndyAinscow earned 250 total points
ID: 18044660
Trap the WM_ERASEBKGND message

BOOL CMyDlg::OnEraseBkgnd(CDC* pDC)
  CRect rc;
  pDC->FillSolidRect(RGB(0, 0, 128));  //change the values to give the colour you want
  return TRUE;   //IMPORTANT else it will not be changed
LVL 22

Assisted Solution

mahesh1402 earned 250 total points
ID: 18044784
What AndyAinscow suggested is right but with just a syntax error..

it should be like pDC->FillSolidRect(&rc,RGB(0, 0, 128)); //use &rc to input client rect

BOOL CMyDlg::OnEraseBkgnd(CDC* pDC)
  CRect rc;
  pDC->FillSolidRect(&rc,RGB(0, 0, 128));  //change the values to give the colour you want
  return TRUE;   //IMPORTANT else it will not be changed


BOOL CMyDialog::OnEraseBkgnd(CDC *pDC)
  CRect rect;
  CBrush myBrush(RGB(255,0,0)); // Solid RED for instance
  CBrush *pOld = pDC->SelectObject(&myBrush);
  BOOL bRes = pDC->PatBlt(0, 0, rect.Width(), rect.Height(), PATCOPY);
  pDC->SelectObject(pOld); // Have to restore old brush
  return bRes;


LVL 44

Expert Comment

ID: 18044832

Expert Comment

ID: 18107262
add a function wm_ctlcolor handlerr to class by right click on theclass name 'add window msg handler'
now modify the code like this

HBRUSH CLASSNAME::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
// return MiBrush;      CDialog MiDlg;
      HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, CTLCOLOR_DLG);

      if(nCtlColor==CTLCOLOR_DLG )
 return MiBrush;
return hbr;

define the object of the brush as "MiBrush "
write the
line of code in the oninitdialog()


LVL 44

Expert Comment

ID: 18372952

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