Resizing splitter panes in SDI CMainFrame::OnSize()

Paul Pettigrew -- chilli@iinet.net.au
Sunday, June 02, 1996

WinNT 3.51/Win95
MSVC++ 4.1
SDI AppWizard MFC

I am unable to resize 3 horizontal static splitter windows, in the OnSize handler.
I wish to have the topmost pane 50% of the SDI main frame client area, below it the second row 25%, and the bottom row the remaining 25%.

The code below produces random resizing of the rows, that in no way correspond to the % amounts.
Often only the top pane will be visible, with the other two "below the status bar" and not visible.

What is wrong with CSplitterWnd::SetRowInfo()?
This should work, if I have read the documentation correctly.

Has anybody successfully set the layout of static splitter panes programatically at runtime?
...............................................................
void CMainFrame::OnSize(UINT nType, int cx, int cy) 
{
   //   NB:  This function is called TWICE by the framework when
   //         the application is first started.  
   //         On the first run, there are no splitters yet!  Thanks to the constructor
   //         setting m_bResizePanes = FALSE, the first run will never attempt to
   //         move the windows.  The user setting will be loaded prior to the second run.
   CFrameWnd::OnSize(nType, cx, cy);
   
   //   The 3 splitter panes are resized to maintain their relative vertical coverage.
   //   This attribute can be turned off.
   if (m_bResizePanes)
   {
      //   Lookup table for desired % ratios
      const int PanePct[] = {50, 25, 25};

      for (int nRow = 0; nRow < 3; nRow++)
      {
         m_wndSplitter.SetRowInfo(
            nRow,                         // row
            (PanePct[nRow] * cy) / 100,   // cyIdeal
            0);                           // cyMin 
      }
   }
}

--
Paul Pettigrew
chilli@iinet.net.au || pmpet2@mugc.cc.monash.edu.au
http://www.iinet.net.au/~chilli/

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Greg D. Tighe -- gdt@eng.aisinc.com
Tuesday, June 04, 1996

> What is wrong with CSplitterWnd::SetRowInfo()?
> This should work, if I have read the documentation correctly.
> 
...
>       for (int nRow = 0; nRow < 3; nRow++)
>       {
>          m_wndSplitter.SetRowInfo(
>             nRow,                         // row
>             (PanePct[nRow] * cy) / 100,   // cyIdeal
>             0);                           // cyMin 
>       }
> 
After you've finished with all your calls to SetRowInfo() you'll need 
to call m_wndSplitter.RecalcLayout( ) to correctly redisplay your 
splitter window.

	-Greg Tighe
	Applied Intelligent Systems, Inc.
	Ann Arbor, MI
	gdt@aisinc.com

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