number6dlg.cpp

自己用VC编写的一个关于滚动条的实验

// number6Dlg.cpp : implementation file
//

#include "stdafx.h"
#include "number6.h"
#include "number6Dlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CNumber6Dlg dialog

CNumber6Dlg::CNumber6Dlg(CWnd* pParent /*=NULL*/)
	: CDialog(CNumber6Dlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CNumber6Dlg)
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CNumber6Dlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CNumber6Dlg)
	DDX_Control(pDX, IDC_EDIT2, m_e_v);
	DDX_Control(pDX, IDC_EDIT1, m_e_h);
	DDX_Control(pDX, IDC_SCROLLBAR2_v, m_s_v);
	DDX_Control(pDX, IDC_SCROLLBAR1_h, m_s_h);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CNumber6Dlg, CDialog)
	//{{AFX_MSG_MAP(CNumber6Dlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
	ON_WM_HSCROLL()
	ON_WM_VSCROLL()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CNumber6Dlg message handlers

BOOL CNumber6Dlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.
	m_s_h.SetScrollRange(0,200);    //设置水平滚动条范围
	m_s_v.SetScrollRange(50,250);    //设置垂直滚动条范围
	m_s_h.SetScrollPos(0);    //设置水平滚动条初始位置
	m_s_v.SetScrollPos(50);    //设置水平滚动条初始位置
	m_e_h.SetSel(0,-1);        //选中“水平值”编辑框的全部内容
	m_e_h.ReplaceSel("0");        //用括号内内容替换“水平值”编辑框选中内容
	m_e_v.SetSel(0,-1);        //选中“垂直值”编辑框的全部内容
	m_e_v.ReplaceSel("50");        //用括号内内容替换“垂直值”编辑框选中内容
	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CNumber6Dlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CNumber6Dlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CNumber6Dlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CNumber6Dlg::OnButton1() 
{
	// TODO: Add your control notification handler code here
	OnOK();
}

void CNumber6Dlg::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar) 
{
	// TODO: Add your message handler code here and/or call default
	CString s;
	int n;
	switch(nSBCode)
	{
	case SB_LINELEFT:
		n=m_s_h.GetScrollPos();
		m_s_h.SetScrollPos(n-1>=0?n-1:n);
		s.Format("%d",m_s_h.GetScrollPos());
		m_e_h.SetSel(0,-1);
		m_e_h.ReplaceSel(s);
		break;
	case SB_LINERIGHT:
		n=m_s_h.GetScrollPos();
		m_s_h.SetScrollPos(n+1<=200?n+1:n);
		s.Format("%d",m_s_h.GetScrollPos());
		m_e_h.SetSel(0,-1);
		m_e_h.ReplaceSel(s);
		break;
	case SB_PAGELEFT:
		n=m_s_h.GetScrollPos();
		m_s_h.SetScrollPos(n-10>=0?n-10:n);
		s.Format("%d",m_s_h.GetScrollPos());
		m_e_h.SetSel(0,-1);
		m_e_h.ReplaceSel(s);
		break;
	case SB_PAGERIGHT:
		n=m_s_h.GetScrollPos();
		m_s_h.SetScrollPos(n+10<=200?n+10:n);
		s.Format("%d",m_s_h.GetScrollPos());
		m_e_h.SetSel(0,-1);
		m_e_h.ReplaceSel(s);
		break;
	case SB_THUMBPOSITION:
		m_s_h.SetScrollPos(nPos);
		s.Format("%d",m_s_h.GetScrollPos());
		m_e_h.SetSel(0,-1);
		m_e_h.ReplaceSel(s);
		break;
	}
	CDialog::OnHScroll(nSBCode, nPos, pScrollBar);
}

void CNumber6Dlg::OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar) 
{
	// TODO: Add your message handler code here and/or call default
	CString s;
	int n;
	switch(nSBCode)
	{
	case SB_LINEUP:
		n=m_s_v.GetScrollPos();
		m_s_v.SetScrollPos(n-1>=50?n-1:n);
		s.Format("%d",m_s_v.GetScrollPos());
		m_e_v.SetSel(0,-1);
		m_e_v.ReplaceSel(s);
		break;
	case SB_LINEDOWN:
		n=m_s_v.GetScrollPos();
		m_s_v.SetScrollPos(n+1<=250?n+1:n);
		s.Format("%d",m_s_v.GetScrollPos());
		m_e_v.SetSel(0,-1);
		m_e_v.ReplaceSel(s);
		break;
	case SB_PAGEUP:
		n=m_s_v.GetScrollPos();
		m_s_v.SetScrollPos(n-10>=50?n-10:n);
		s.Format("%d",m_s_v.GetScrollPos());
		m_e_v.SetSel(0,-1);
		m_e_v.ReplaceSel(s);
		break;
	case SB_PAGEDOWN:
		n=m_s_v.GetScrollPos();
		m_s_v.SetScrollPos(n+10<=250?n+10:n);
		s.Format("%d",m_s_v.GetScrollPos());
		m_e_v.SetSel(0,-1);
		m_e_v.ReplaceSel(s);
		break;
	case SB_THUMBPOSITION:
		m_s_v.SetScrollPos(nPos);
		s.Format("%d",m_s_v.GetScrollPos());
		m_e_v.SetSel(0,-1);
		m_e_v.ReplaceSel(s);
		break;
	}
	
	CDialog::OnVScroll(nSBCode, nPos, pScrollBar);
}