Toolbar within splitter windows

Environment: –>

Introduction

Has anyone ever wondered how to dock a toolbar inside a splitter pane? Normally
you cannot do that, but you can alter your splitter pane so that it will look
just like you placed a toolbar on one of it’s sides. The trick is to create a
two-pane splitter where your initial pane was; but not just any splitter, we
will use our own, which does not allow resizing, and has different border
settings. There is one additional view to create, and we will derive a class
from CFormView since features provided by this class are closer to our goal.

The code

First goes the custom splitter window:

// class definition
class
CSmartSplitterWnd :public CSplitterWnd
{
public:
CSmartSplitterWnd();
virtual ~CSmartSplitterWnd();
intHitTest(CPoint pt)const;
protected:
DECLARE_MESSAGE_MAP()
};

// class implementation
CSmartSplitterWnd::CSmartSplitterWnd()
{
m_cxSplitter=3;
// put your own values here, to make the splitter fit your needs
m_cySplitter=3;
m_cxBorderShare=0;
m_cyBorderShare=0;
m_cxSplitterGap=3;
m_cySplitterGap=3;
}

CSmartSplitterWnd::~CSmartSplitterWnd()
{
}

BEGIN_MESSAGE_MAP(CSmartSplitterWnd, CSplitterWnd)
//{{AFX_MSG_MAP(CSmartSplitterWnd)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

intCSmartSplitterWnd::HitTest(CPoint pt)const
{
ASSERT_VALID(
this);
// do not allow caller to see mouse hits
return 0;
}

Next, we must create a simple CFormView using the resource editor and
ClassWizard. You can add any controls to your form view, but you must keep in
mind that handling the WM_SIZE message may help you improve the look of your
view. There are several ways to update your buttons and other controls inside
the view; you may need to implement one of them to update, enable or disable the
controls.

The last step is to create the splitter itself and the views. The code below
matches a SDI application that accomodates the code above inside a splitter
pane, but you can easily adjust it to fit your needs.

First add a member to the CMainFrame class of type CSmartSplitterWnd:

classCMainFrame :public CFrameWnd
{
[...]
public:
	CSmartSplitterWnd m_barSplitter;

In the OnCreateClient member of the CMainFrame class, add code to create the
splitter inside the right pane:

// create the splitter window
if (!m_barSplitter.CreateStatic(&m_parentSplitter, 2, 1, WS_CHILD|WS_VISIBLE|WS_BORDER,
	m_parentSplitter.IdFromRowCol(1, 0))) returnfalse;

// create the views
m_barSplitter.CreateView(0, 0, RUNTIME_CLASS(CBarView), CSize(0, 0), pContext);
m_barSplitter.CreateView(1, 0, RUNTIME_CLASS(CTheView), CSize(0, 0), pContext);
// then set heights

The code is quite easy to follow and change to meet your needs, but if you need
assistance, contact me. Also please send me
bugs or updates, to keep this solution up-to-date. For more details on the
sample application, contact me.

Date Last Updated: February 3, 1999

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