SplitterBar.h

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// CSplitterBar.h : header file
//
#ifndef __SPLITTER_BAR_H__
#define __SPLITTER_BAR_H__

#if _MSC_VER >= 1000
#pragma once
#endif // _MSC_VER >= 1000

#define WM_SPLITTER_MOVED       WM_USER+1000

// CSplitterBar

class CSplitterBar : public CWnd
{
        DECLARE_DYNAMIC(CSplitterBar)

        enum DRAGFLAG { DRAG_ENTER=0, DRAG_EXIT=1, DRAGGING=2 };
protected:
        CRect   m_rectSplitter;
        CRect   m_rectDragPrev;
        CRect   m_rectDragCurt;
        BOOL    m_bDragging;

        CWnd    *m_pwndLeftPane;        //left pane window
        CWnd    *m_pwndRightPane;       //right pane window

        int             m_cxLeftMost;           //left most, relative to parent window
        int             m_cxRightMost;          //right most, relative to parent window

        BOOL    m_bHorizontal;
// Construction
public:
        CSplitterBar();
        BOOL Create(DWORD dwStyle, const RECT& rect, CWnd* pParentWnd, UINT nID, BOOL bHorizontal=FALSE);

// Attributes
public:
        BOOL IsCursorOverSplitter( const CPoint& ptCursor );

// Operations
public:
        void DrawDraggingBar(CPoint point,DRAGFLAG df=DRAGGING);
        void SetPanes(CWnd *pwndLeftPane,CWnd *pwndRightPane);
        void MovePanes();

// Overrides
        // ClassWizard generated virtual function overrides
        //{{AFX_VIRTUAL(CSplitterBar)
        //}}AFX_VIRTUAL

// Implementation
public:
        virtual ~CSplitterBar();

        // Generated message map functions
protected:
        //{{AFX_MSG(CSplitterBar)
        afx_msg void OnPaint();
        afx_msg LRESULT OnNcHitTest(CPoint point);
        afx_msg int  OnCreate(LPCREATESTRUCT lpCreateStruct);
        afx_msg BOOL OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message);
        afx_msg void OnMouseMove(UINT nFlags, CPoint point);
        afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
        afx_msg void OnLButtonUp(UINT nFlags, CPoint point);
        //}}AFX_MSG
        DECLARE_MESSAGE_MAP()
};


//{{AFX_INSERT_LOCATION}}
// Microsoft Developer Studio will insert additional declarations immediately before the previous line.

#endif