OnVScroll event not calling for CSliderCtrl

From:

bg_ie@yahoo.com

Newsgroups:

microsoft.public.vc.mfc

Date:

21 Aug 2006 04:47:21 -0700

Message-ID:

<1156160841.328022.322410@m79g2000cwm.googlegroups.com>

Hi,

I have created my own derived CSliderCtrl class. Objects of this class
respond to OnKeyDown, OnKeyUp, OnKillFocus, but when I reposition the
slider OnVScroll is not being called. I create my objects as follows -

CSequencerSlider* pSlider[4];

for(int i=0;i<4;i++)
  pSlider[i] = new CSequencerSlider;

for(int i=0;i<4;i++)
{
  pSlider[i]->Create(WS_VISIBLE | TBS_VERT, CRect(12, 20+i*125, 38,
130+i*125), this, 0);

  pSlider[i]->SetRangeMin(0);
  pSlider[i]->SetRangeMax(100);
  pSlider[i]->SetRange(0, 100);
  pSlider[i]->SetPos(50);
}

This all works fine. My .cpp and .h file are included below, perhaps
someone can spot a mistake. When I hit a key or when a slider loses
focus, the correct events are being called. But when I reposition the
slider, no the OnVScroll is not being called.

Thanks for your help,

Barry.

// SequencerSlider.cpp : implementation file
//

#include "stdafx.h"

#include "Sequencer.h"

#include "SequencerSlider.h"
#include "SequencerDoc.h"
#include "SequencerView.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CSequencerSlider

CSequencerSlider::CSequencerSlider()
{
}

CSequencerSlider::~CSequencerSlider()
{
}

BEGIN_MESSAGE_MAP(CSequencerSlider, CSliderCtrl)
    //{{AFX_MSG_MAP(CSequencerSlider)
    ON_WM_KEYDOWN()
    ON_WM_KEYUP()
    ON_WM_VSCROLL()
    ON_WM_KILLFOCUS()
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CSequencerSlider message handlers

void CSequencerSlider::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags)

{
    SetPos(0);
    // TODO: Add your message handler code here and/or call default

    CSliderCtrl::OnKeyDown(nChar, nRepCnt, nFlags);
}

void CSequencerSlider::OnKeyUp(UINT nChar, UINT nRepCnt, UINT nFlags)
{
    SetPos(25);
    //MessageBox ( 0 , "WRONG WINSOCK VERSION" , MB_OKCANCEL );
    CSliderCtrl::OnKeyUp(nChar, nRepCnt, nFlags);
}

void CSequencerSlider::OnKillFocus(CWnd* pNewWnd)
{
    SetPos(75);
    //MessageBox ( 0 , "WRONG WINSOCK VERSION" , MB_OKCANCEL );
    CSliderCtrl::OnKillFocus(pNewWnd);
}

void CSequencerSlider::OnVScroll(UINT nSBCode, UINT nPos, CScrollBar*
pScrollBar)
{
    SetPos(100);
    CSliderCtrl::OnHScroll( nSBCode, nPos, pScrollBar );
}

#if !defined(AFX_SEQUENCER_SLIDER)
#define AFX_SEQUENCER_SLIDER

#if _MSC_VER >= 1000
#pragma once
#endif // _MSC_VER >= 1000
// SequencerSlider.h : header file
//

/////////////////////////////////////////////////////////////////////////////
// CSequencerScroll window

class CSequencerSlider : public CSliderCtrl
{
// Construction
public:
    CSequencerSlider();

// Attributes
public:

// Operations
public:

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

// Implementation
public:
    virtual ~CSequencerSlider();

    // Generated message map functions
protected:
    //{{AFX_MSG(CSequencerSlider)
    afx_msg void OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags);
    afx_msg void OnKeyUp(UINT nChar, UINT nRepCnt, UINT nFlags);
    afx_msg void OnVScroll(UINT nSBCode, UINT nPos, CScrollBar*
pScrollBar);
    afx_msg void OnKillFocus(CWnd* pNewWnd);
    //}}AFX_MSG

    DECLARE_MESSAGE_MAP()
};

/////////////////////////////////////////////////////////////////////////////

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

#endif //
!defined(AFX_SEQUENCEREDIT_H__0EF85D2F_FA3F_41CB_80D5_AB5D589351E3__INCLUDED_)