#pragma once

// CCustomSliderCtr

class CCustomSliderCtr : public CSliderCtrl

{

    DECLARE_DYNAMIC(CCustomSliderCtr)

public:

    CCustomSliderCtr();

    virtual ~CCustomSliderCtr();

protected:

    afx_msg void OnPaint();
　　afx_msg void OnLButtonDown(UINT nFlags, CPoint point) ;

    void CustDraw(CDC *pDc);

    DECLARE_MESSAGE_MAP()

};

// CustomSliderCtr.cpp : 实现文件

//

#include "stdafx.h"

#include "CustomSliderCtr.h"

// CCustomSliderCtr

IMPLEMENT_DYNAMIC(CCustomSliderCtr, CSliderCtrl)

CCustomSliderCtr::CCustomSliderCtr()

{

}

CCustomSliderCtr::~CCustomSliderCtr()

{

}

BEGIN_MESSAGE_MAP(CCustomSliderCtr, CSliderCtrl)

    ON_WM_PAINT()

	ON_WM_LBUTTONDOWN()

END_MESSAGE_MAP()

// CCustomSliderCtr 消息处理程序

void CCustomSliderCtr::OnPaint()

{

    CSliderCtrl::OnPaint();

    CDC *pDc = GetDoc();

    CustDraw(pDc);

}

void CCustomSliderCtr::CustDraw(CDC *pDc)

{

    COLORREF colorLeft(SLIDER_LEFT_COLOR);

    COLORREF colorChannel(SlIDER_BK_COLOR);

    CPen penChannel(PS_DASHDOTDOT, 2, colorChannel);

    CBrush brushChannel;

    brushChannel.CreateSolidBrush(colorChannel);

    COLORREF colorThumb(SLIDER_THUMB_COLOR);

    CPen penThumb(PS_DASHDOTDOT, 2, colorThumb);

    CBrush brushThumb;

    brushThumb.CreateSolidBrush(colorThumb);

    CRect clientRect;

    GetClientRect(clientRect);

    CRect channelRect;

    GetChannelRect(&channelRect);

    //clientRect.bottom /= 2; 

    pDc->SetBkMode(TRANSPARENT);

    pDc->FillSolidRect(clientRect, DIALOG_BKCOLOR);

    clientRect.left = channelRect.left;

    clientRect.right = channelRect.right;

    pDc->FillSolidRect(clientRect, colorChannel);

    pDc->Draw3dRect(clientRect, colorChannel, colorChannel);

    CRect thumbRect;

    GetThumbRect(thumbRect);

    thumbRect.bottom *= 2;

    CRect leftRect;

    leftRect.left = clientRect.left;

    leftRect.top = clientRect.top;

    leftRect.bottom = clientRect.bottom;

    leftRect.right = thumbRect.left;

    pDc->SelectObject(&brushThumb);

    pDc->SelectObject(&penThumb);

    pDc->FillSolidRect(leftRect, colorLeft);

    pDc->Draw3dRect(leftRect, colorLeft, colorLeft);

    pDc->Ellipse(thumbRect);

}

void CCustomSliderCtr::OnLButtonDown(UINT nFlags, CPoint point)

{

    CSliderCtrl::OnLButtonDown(nFlags, point);

    CRect   rectClient,rectChannel;

    GetClientRect(rectClient);

    GetChannelRect(rectChannel);

    int nMax = 0;

    int nMin = 0;

    GetRange(nMin,nMax);

    int nPos = (nMax - nMin)*(point.x - rectClient.left - rectChannel.left)/(rectChannel.right - rectChannel.left);

    SetPos(nPos);

}  

#define SlIDER_BK_COLOR RGB(192, 192, 192)

#define SLIDER_LEFT_COLOR RGB(148, 40, 255)

#define SLIDER_THUMB_COLOR RGB(240, 240, 240)
#define DIALOG_BKCOLOR RGB(201,227,253)