Re: CView::OnCtlColor to change font on a single CStatic

From:

"AliR $VC++ MVP$" <alir@online.nospam>

Newsgroups:

microsoft.public.vc.mfc

Date:

Sat, 19 May 2007 00:03:57 GMT

Message-ID:

<N9r3i.9297$rO7.6957@newssvr25.news.prodigy.net>

Why not just call m_StaticCtrl.SetFont(...);

Where did you get the idea that changing the font for the DC in OnCtrlColor
is a good idea. First of all, you should not select anything into a DC if
you aren't going to unselect it out of the DC.
Second WM_PAINT handler of CStatic will probably select a font into the DC
that will override what you just selected into the DC.

AliR.

"GT" <ContactGT_remove_@hotmail.com> wrote in message
news:464e25f6$0$3761$c3e8da3@news.astraweb.com...

What am I missing here. I have a CView derived class with a pretty
extensive OnDraw which draws a Gantt chart, based on task information in
my project. I have 1 CStatic control in the corner which displays the
current scaling and I would like to reduce the font size on it. I thought
I could do it in the following method, but it is crashing. The method is
hit everytime it should be and falls into the first half of the switch
statement when setting the font for the above CStatic control (The rest of
the screen and controls can be seen to be drawn). The SelectObject line is
the crash and investigation suggests that the pDC is not valid, but a
virtual pointer to nothing much. How else can I set the font for this 1
control on this 1 view?:

HBRUSH ViewGanttChart::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
switch (nCtlColor)
{
case CTLCOLOR_STATIC: // 6
  GetDC()->SelectObject(m_fontScale);
  return CView::OnCtlColor(GetDC(), pWnd, nCtlColor);
  // no need for break; after a return

case CTLCOLOR_MSGBOX: // 0
case CTLCOLOR_EDIT: // 1
case CTLCOLOR_LISTBOX: // 2
case CTLCOLOR_BTN: // 3
case CTLCOLOR_DLG: // 4
case CTLCOLOR_SCROLLBAR: // 5
default:
  pDC->SetBkMode(TRANSPARENT);
  pDC->SetTextColor(GetSysColor(COLOR_WINDOWTEXT));
  return m_brBackgroundBrushBMP;
  // no need for break; after a return
}
}