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3-way splitters in Visual C++

Posted on 1997-12-15
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Last Modified: 2010-04-10
Hi,

I would like to know if it is possible at all to convert an
existing 2-way splitter SDI App (i.e., explorer look) to a
new 3-way splitter involving 3 different views. This is to
be implemented in Visual C++ 5.0. The 3 desired views may
be : 1 tree view, 1 list view and 1 form view. Thanks.
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Question by:baig
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Accepted Solution

by:
jlilley earned 140 total points
ID: 1176340
Override CMainFrame::OnCreateClient() using the Class Wizard.  Then fill in the body.  This example creates a splitter with two panes on the left, one pane on the right.  The stuff that goes in each pane is an arbitrary view...  You can make each one a tree view, list view, etc.  I've called it "YourView" in this example.

First of all, you need some members in your CMainFrame class to hold this data, so this goe sin your CMainFrm.h:
CSplitterWnd top_splitter;  // splits into two columns
CSplitterWnd left_splitter; // splits left column into two rows
CView* top_left_view;
CView* bottom_left_view;
CView* right_view;

... then this is the overridden method:

BOOL CMainFrame::OnCreateClient(
   LPCREATESTRUCT lpcs, CCreateContext* pContext)
{
   SIZE sz = { 200, 200 };
   // Create the splitter window with two columns
   top_splitter.CreateStatic(this, 1, 2);
   // Create another splitter in the left column
   left_splitter.CreateStatic(
      &top_splitter,     // parent is the first splitter
      2, 1,              // new splitter is 2 rows, 1 column
      WS_CHILD | WS_VISIBLE | WS_BORDER,  // style
      top_splitter.IdFromRowCol(0, 0)
   );

   // Create the top left view
   left_splitter.CreateView(
      0, 0, RUNTIME_CLASS(YourViewClass), sz, pContext
   );
   top_left_view = left_splitter.GetPane(0,0);

   // Create the bottom left view
   left_splitter.CreateView(
      1, 0, RUNTIME_CLASS(YourView), sz, pContext
   );
   bottom_left_view = left_splitter.GetPane(1,0);

   // Create the right view
   top_splitter.CreateView(
      0, 1, RUNTIME_CLASS(YourView), sz, pContext
   );
   right_view = top_splitter.GetPane(0,1);

   // Adjust layout to be reasonable
   top_splitter.SetColumnInfo(0, 200, 100);

   return TRUE;
}

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