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Highlight view with focus

, 10 Jan 2000 69.4K 23
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Adding visual feedback on which pane in a split view currently has the focus
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Many times it would be nice to have some visual feedback as to which pane in a split view currently has the focus. This is very useful if you have multiple view types and different keyboard strokes cause different actions in each.

NOTE: This uses an undocumented feature in MFC so be careful in the future.

Step 1) Derive your own SplitterWnd class.
Step 2) Override the undocumented OnDrawSplitter function.
Step 3) Replace the CSplitterWnd instance in the child frame with your splitter.

This example draws in red but you can adjust the color and width of the frame by altering the define values.

// MySplitterWnd.h

class MySplitterWnd : public CSplitterWnd
    int cRow;
    int cCol; 
    void OnDrawSplitter(CDC* pDC, ESplitType nType, const CRect& rectArg);
    void RefreshSplitBars(void);

// MySplitterWnd.cpp

#include "StdAfx.h"
#include "MySplitterWnd.h"

#define FOCUS_HILIGHT_COLOR_ULO RGB(180, 75, 25)
#define FOCUS_HILIGHT_COLOR_LRO RGB(245, 5, 25)
#define FOCUS_HILIGHT_COLOR_ULI RGB(145, 95, 75)
#define FOCUS_HILIGHT_COLOR_LRI RGB(220, 65, 40)


#define SPLITTER_CX 4
#define SPLITTER_CY 4

void MySplitterWnd::RefreshSplitBars(void)
    CRect rectInside;

    DrawAllSplitBars(NULL, rectInside.right, rectInside.bottom);

    cRow = 0;
    cCol = 0;

    m_cxSplitter = SPLITTER_CX;
    m_cySplitter = SPLITTER_CY;
    m_cxSplitterGap = SPLITTER_GAPX;
    m_cySplitterGap = SPLITTER_GAPY;

void MySplitterWnd::OnDrawSplitter(CDC* pDC, ESplitType nType,
                                   const CRect& rectArg)
    if ((FOCUS_HILIGHT_SHOW) && ((GetRowCount() > 1) || 
        (GetColumnCount() > 1)) && (nType == splitBorder))
        int pRow = 0;
        int pCol = 0;
        if (
            pRow = 1;
        if (rectArg.left)
            pCol = 1;
        if ((cRow == pRow) && (cCol == pCol))
            if (pDC == NULL)
                RedrawWindow(rectArg, NULL, RDW_INVALIDATE|RDW_NOCHILDREN);
            CRect rect = rectArg;



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About the Author

Randy More
United States United States
No Biography provided

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Comments and Discussions

General3 static splitter window Pin
weilun31-Aug-04 20:01
sussweilun31-Aug-04 20:01 
hi,your article is very good Smile | :)
but I have a question.. When I make a 2 static splitter it works well
but when I make a 3 static splitter window,just like the way "powerpoint". It does'nt work! >"< Could you help me!? thanks!

some codes like that..

BOOL CChildFrame::OnCreateClient(LPCREATESTRUCT lpcs, CCreateContext* pContext) {
!m_wndSplitter2.CreateStatic(&m_wndSplitter, 2, 1,WS_CHILD | WS_VISIBLE, m_wndSplitter.IdFromRowCol(0, 1))
!m_wndSplitter2.CreateView(1, 0, RUNTIME_CLASS(CView3),CSize(0, 0), pContext)
AfxMessageBox("Create View Failed!");
return FALSE;
return TRUE;

1.the left window

2.the top-right window

3.the bottom-right window

GeneralMFC7 unhandled exception Pin
Nate Strandberg9-Jul-03 17:16
memberNate Strandberg9-Jul-03 17:16 
GeneralStatic Splits Pin
David Jones17-Jan-02 4:06
memberDavid Jones17-Jan-02 4:06 
Questionhow to access these protected functions Pin
Darren Schroeder9-May-00 5:46
sussDarren Schroeder9-May-00 5:46 

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