scrolldlg.cpp

c＋＋编写的常用控件

// ScrollDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Ex_CommCtrls.h"
#include "ScrollDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CScrollDlg dialog


CScrollDlg::CScrollDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CScrollDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CScrollDlg)
	m_RValue = 0;
	m_GValue = 0;
	m_BValue = 0;
	//}}AFX_DATA_INIT
}


void CScrollDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CScrollDlg)
	DDX_Control(pDX, IDC_SPIN2, m_Spin);
	DDX_Control(pDX, IDC_SLIDER1, m_Slider);
	DDX_Control(pDX, IDC_SCROLLBAR1, m_Scroll);
	DDX_Text(pDX, IDC_EDIT1, m_RValue);
	DDV_MinMaxInt(pDX, m_RValue, 0, 255);
	DDX_Text(pDX, IDC_EDIT2, m_GValue);
	DDV_MinMaxInt(pDX, m_GValue, 0, 255);
	DDX_Text(pDX, IDC_EDIT3, m_BValue);
	DDV_MinMaxInt(pDX, m_BValue, 0, 255);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CScrollDlg, CDialog)
	//{{AFX_MSG_MAP(CScrollDlg)
	ON_EN_CHANGE(IDC_EDIT1, OnChangeEdit)
	ON_EN_CHANGE(IDC_EDIT2, OnChangeEdit2)
	ON_WM_PAINT()
	ON_EN_CHANGE(IDC_EDIT3, OnChangeEdit)
	ON_WM_HSCROLL()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CScrollDlg message handlers

void CScrollDlg::OnChangeEdit() 
{
	// TODO: If this is a RICHEDIT control, the control will not
	// send this notification unless you override the CDialog::OnInitDialog()
	// function and call CRichEditCtrl().SetEventMask()
	// with the ENM_CHANGE flag ORed into the mask.
	
	// TODO: Add your control notification handler code here
	if(!m_bEditOK) return;
	UpdateData();
	m_Scroll.SetScrollPos(m_RValue);
	m_Slider.SetPos(m_GValue);
	Draw();
}

void CScrollDlg::OnChangeEdit2() 
{
	// TODO: If this is a RICHEDIT control, the control will not
	// send this notification unless you override the CDialog::OnInitDialog()
	// function and call CRichEditCtrl().SetEventMask()
	// with the ENM_CHANGE flag ORed into the mask.
	
	// TODO: Add your control notification handler code here
	
}

void CScrollDlg::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	
	// TODO: Add your message handler code here
	CWnd*pWnd=GetDlgItem(IDC_DRAW);
	pWnd->UpdateWindow();
	Draw();
	// Do not call CDialog::OnPaint() for painting messages
}

BOOL CScrollDlg::OnInitDialog() 
{
	CDialog::OnInitDialog();
	m_Scroll.SetScrollRange(0,255);
	m_Scroll.SetScrollPos(m_RValue);
	m_Slider.SetRange(0,255);
	m_Slider.SetPos(m_GValue);
	m_Spin.SetRange(0,255);
	UpdateData(FALSE);
	m_bEditOK=true;
	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}

void CScrollDlg::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar) 
{
	// TODO: Add your message handler code here and/or call default
	int nID=pScrollBar->GetDlgCtrlID();
	if (nID==IDC_SLIDER1)
	{
		m_GValue=m_Slider.GetPos();
	}
	if (nID==IDC_SCROLLBAR1)
	{
		switch(nSBCode)
		{
		case SB_LINELEFT:    m_RValue--;
			                 break;
		case SB_LINERIGHT:   m_RValue++;
			                 break;
		case SB_PAGELEFT:    m_RValue-=10;
							 break;
		case SB_PAGERIGHT:   m_RValue+=10;
			                 break;
		case SB_THUMBTRACK:  m_RValue=nPos;
			                 break;
		}
		if(m_RValue<0)        m_RValue=0;
		if(m_RValue>255)      m_RValue=255;
		m_Scroll.SetScrollPos(m_RValue);
	}
	UpdateData(FALSE);
	Draw();			
	CDialog::OnHScroll(nSBCode, nPos, pScrollBar);
}

void CScrollDlg::Draw()
{
	CWnd*pWnd=GetDlgItem(IDC_DRAW);
	CDC*pDC=pWnd->GetDC();
	CBrush drawBrush;
	drawBrush.CreateSolidBrush(RGB(m_RValue,m_GValue,m_BValue));
	CBrush*pOldBrush=pDC->SelectObject(&drawBrush);
	CRect rcClient;
	pWnd->GetClientRect(rcClient);
	pDC->Rectangle(rcClient);
	pDC->SelectObject(pOldBrush);
}