gusucode.com > VC++ 滚动条控件使用实例-源码程序 > VC++ 滚动条控件使用实例-源码程序/code/CrollDlg.cpp
// CrollDlg.cpp : implementation file // Download by http://www.NewXing.com #include "stdafx.h" #include "Croll.h" #include "CrollDlg.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() ///////////////////////////////////////////////////////////////////////////// // CCrollDlg dialog CCrollDlg::CCrollDlg(CWnd* pParent /*=NULL*/) : CDialog(CCrollDlg::IDD, pParent) { //{{AFX_DATA_INIT(CCrollDlg) // NOTE: the ClassWizard will add member initialization here //}}AFX_DATA_INIT // Note that LoadIcon does not require a subsequent DestroyIcon in Win32 m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); } void CCrollDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CCrollDlg) DDX_Control(pDX, IDC_SCROLLBAR, m_SCROLLBAR); DDX_Control(pDX, IDC_EDIT, m_EDIT); //}}AFX_DATA_MAP } BEGIN_MESSAGE_MAP(CCrollDlg, CDialog) //{{AFX_MSG_MAP(CCrollDlg) ON_WM_SYSCOMMAND() ON_WM_PAINT() ON_WM_QUERYDRAGICON() ON_BN_CLICKED(IDC__RIGHT_BUTTON, OnRightButton) ON_BN_CLICKED(IDC_EXIT_BUTTON, OnExitButton) ON_BN_CLICKED(IDC_LEFT_BUTTON, OnLeftButton) ON_BN_CLICKED(IDC_RESET_BUTTON, OnResetButton) ON_WM_HSCROLL() //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CCrollDlg message handlers BOOL CCrollDlg::OnInitDialog() { CDialog::OnInitDialog(); // Add "About..." menu item to system menu. // 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 m_SCROLLBAR.SetScrollRange(0,30); m_SCROLLBAR.SetScrollPos(15); char spos[10]; itoa(m_SCROLLBAR.GetScrollPos(),spos,10); m_EDIT.SetSel(0,-1); m_EDIT.ReplaceSel(spos); UpdateData(FALSE); return TRUE; // return TRUE unless you set the focus to a control } void CCrollDlg::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 CCrollDlg::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 CCrollDlg::OnQueryDragIcon() { return (HCURSOR) m_hIcon; } void CCrollDlg::OnRightButton() { // TODO: Add your control notification handler code here m_SCROLLBAR.SetScrollPos(30); m_EDIT.SetSel(0,-1); m_EDIT.ReplaceSel("30"); } void CCrollDlg::OnExitButton() { // TODO: Add your control notification handler code here OnOK(); } void CCrollDlg::OnLeftButton() { // TODO: Add your control notification handler code here m_SCROLLBAR.SetScrollPos(0); m_EDIT.SetSel(0,-1); m_EDIT.ReplaceSel("0"); } void CCrollDlg::OnResetButton() { // TODO: Add your control notification handler code here m_SCROLLBAR.SetScrollPos(15); m_EDIT.SetSel(0,-1); m_EDIT.ReplaceSel("15"); } void CCrollDlg::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar) { // TODO: Add your message handler code here and/or call default char spos[10]; int iNowPos; switch(nSBCode) { if (pScrollBar == &m_SCROLLBAR) { case SB_THUMBPOSITION: m_SCROLLBAR.SetScrollPos(nPos); itoa(nPos,spos,10); m_EDIT.SetSel(0,-1); m_EDIT.ReplaceSel(spos); break; case SB_LINEDOWN: iNowPos = m_SCROLLBAR.GetScrollPos(); iNowPos +=1; if (iNowPos>30) { iNowPos = 30; } m_SCROLLBAR.SetScrollPos(iNowPos); itoa(m_SCROLLBAR.GetScrollPos(),spos,10); m_EDIT.SetSel(0,-1); m_EDIT.ReplaceSel(spos); break; case SB_LINEUP : iNowPos = m_SCROLLBAR.GetScrollPos(); iNowPos -= 1 ; if(iNowPos<0) { iNowPos = 0; } m_SCROLLBAR.SetScrollPos(iNowPos); itoa(m_SCROLLBAR.GetScrollPos(),spos,10); m_EDIT.SetSel(0,-1); m_EDIT.ReplaceSel(spos); break; case SB_PAGEDOWN : iNowPos = m_SCROLLBAR.GetScrollPos(); iNowPos += 2 ; if (iNowPos>30) { iNowPos =30; } m_SCROLLBAR.SetScrollPos(iNowPos); itoa(m_SCROLLBAR.GetScrollPos(),spos,10); m_EDIT.SetSel(0,-1); m_EDIT.ReplaceSel(spos); break; case SB_PAGEUP: iNowPos = m_SCROLLBAR.GetScrollPos(); iNowPos -= 2; if(iNowPos<0) { iNowPos = 0; } m_SCROLLBAR.SetScrollPos(iNowPos); itoa(m_SCROLLBAR.GetScrollPos(),spos,10); m_EDIT.SetSel(0,-1); m_EDIT.ReplaceSel(spos); break; } } CDialog::OnHScroll(nSBCode, nPos, pScrollBar); }