TControlbar Painting Problem...

Posted on 1998-06-04
Medium Priority
Last Modified: 2013-12-26
I have a TMIChild container window with 2 Control bars inserted at the top of the window (stacked).  There seems to be an area about 2 pixels wide on the bottom edge of the top control bar that isn't being repainted when the TMDIChild is resized or otherwise covered by another window.  I am increasing the top and bottom margins by 2 in the TControlBar constructor (Margins.Top +=2 and Margins.Bottom +=2).  I have also overridden TControlBar::Paint with the following:

// RTMToolBar::Paint(TDC& dc, bool erase, TRect& rect)
// This will paint a border between the MenuBar and
// the Toolbar
void RTMToolBar::Paint(TDC& dc, bool erase, TRect& rect)
      TControlBar::Paint(dc, erase, rect);

        TUIBorder(TRect(0,0,Attr.W,2), TUIBorder::EdgeEtched, TUIBorder::Top).Paint(dc);

This code adds an Etched edge to the top of the control bar.

This painting problem seems to exist even if I comment out the edge-painting code or the code that increases the margin size in the contructor.  What can I do?

Darrell Frazier
Manager, Workstation Products
Vendata, Inc.
Question by:djfr
  • 2
  • 2
LVL 15

Expert Comment

by:Tommy Hui
ID: 1299690
Which version of OWL are you using?

Author Comment

ID: 1299691
BC++ 5.02, OWL 5.0


Accepted Solution

JPM earned 400 total points
ID: 1299692
I 've got a similar trouble with a program upgraded from BC4.52 to BC5    ( about a frame )  
I fix up  that pb  when creating an internal border ( or margin )
in the EvEraseBkgnd( HDC hDC)   function
( it 's an odd job but I didn't find a better one  :-)

Hope this helps!


Author Comment

ID: 1299693
I am sorry I was slow to get back.  I was in Montana for a week.  The proposed answer is kind of vague.  Could your provide some example code?

Darrell Frazier


Expert Comment

ID: 1299694
Sorry to be late.....so many things to do...and just 24 hours a day !!!!
The code following  is used  to work around  the same trouble as yours but with a main frame window
bool TMyFrame::EvEraseBkgnd (HDC hDC)
    TDC dc(hDC);

  //  getting client area
     TSize clientAreaSize = GetClientRect().Size();
  // getting frame size
     TRect outside = GetWindowRect();
  //  define a  border
     TSize border = outside.Size() - clientAreaSize;
   // define a margin
     TSize marge(2,2);
     int mx = marge.cx * border.cx;
     int my = marge.cy * border.cy;
   // painting an internal frame in gray
    TRect wr = GetClientRect();
    dc.TextRect(wr.left, wr.top, wr.left+mx, wr.bottom);           // left
    dc.TextRect(wr.left+mx, wr.top, wr.right-mx, wr.top+my);  // top
    dc.TextRect(wr.right-mx, wr.top, wr.right, wr.bottom);         // right
    dc.TextRect(wr.left+mx, wr.bottom-my, wr.right-mx, wr.bottom); // bottom

     return true;      
Hope this helps to solve your pb.



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