ColorSnapDlg.cpp
资源名称:ColorSnap.rar [点击查看]
上传用户:boxulig
上传日期:2022-06-30
资源大小:3348k
文件大小:7k
源码类别:
GDI/图象编程
开发平台:
Visual C++
- // ColorSnapDlg.cpp : implementation file
- //
- #include "stdafx.h"
- #include "ColorSnap.h"
- #include "ColorSnapDlg.h"
- #include <afx.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()
- /////////////////////////////////////////////////////////////////////////////
- // CColorSnapDlg dialog
- CColorSnapDlg::CColorSnapDlg(CWnd* pParent /*=NULL*/)
- : CDialog(CColorSnapDlg::IDD, pParent)
- {
- //{{AFX_DATA_INIT(CColorSnapDlg)
- // 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 CColorSnapDlg::DoDataExchange(CDataExchange* pDX)
- {
- CDialog::DoDataExchange(pDX);
- //{{AFX_DATA_MAP(CColorSnapDlg)
- // NOTE: the ClassWizard will add DDX and DDV calls here
- //}}AFX_DATA_MAP
- }
- BEGIN_MESSAGE_MAP(CColorSnapDlg, CDialog)
- //{{AFX_MSG_MAP(CColorSnapDlg)
- ON_WM_SYSCOMMAND()
- ON_WM_PAINT()
- ON_WM_QUERYDRAGICON()
- ON_WM_MOUSEMOVE()
- ON_WM_TIMER()
- ON_WM_LBUTTONDOWN()
- ON_WM_LBUTTONUP()
- ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
- ON_BN_CLICKED(IDC_BUTTON2, OnButton2)
- ON_WM_DESTROY()
- //}}AFX_MSG_MAP
- END_MESSAGE_MAP()
- /////////////////////////////////////////////////////////////////////////////
- // CColorSnapDlg message handlers
- BOOL CColorSnapDlg::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
- bCaptureWay = false; //默认是定时器方式捕获全屏鼠标
- SetTimer(1, 1, NULL);
- bTimerRunning = true;
- return TRUE; // return TRUE unless you set the focus to a control
- }
- void CColorSnapDlg::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 CColorSnapDlg::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 CColorSnapDlg::OnQueryDragIcon()
- {
- return (HCURSOR) m_hIcon;
- }
- void CColorSnapDlg::OnMouseMove(UINT nFlags, CPoint point)
- {
- // TODO: Add your message handler code here and/or call default
- //对于SetCapture方法捕获鼠标,采用处理WM_MOUSEMOVE的方法
- if(bCaptureWay){
- HDC hDC = ::GetDC(NULL);
- POINT pt;
- GetCursorPos(&pt);
- COLORREF clr = ::GetPixel(hDC, pt.x, pt.y);
- CString strRGB;
- strRGB.Format("R:%d, G:%d, B:%d", GetRValue(clr), GetGValue(clr), GetBValue(clr));
- SetDlgItemText(IDC_RGBBOX, strRGB);
- ::ReleaseDC(NULL, hDC);
- }
- CDialog::OnMouseMove(nFlags, point);
- }
- void CColorSnapDlg::OnTimer(UINT nIDEvent)
- {
- // TODO: Add your message handler code here and/or call default
- //对于定时器捕获鼠标,采用处理WM_TIMER的方法
- if(!bCaptureWay){
- HDC hDC = ::GetDC(NULL);
- POINT pt;
- GetCursorPos(&pt);
- COLORREF clr = ::GetPixel(hDC, pt.x, pt.y);
- CString strRGB;
- strRGB.Format("R:%d, G:%d, B:%d", GetRValue(clr), GetGValue(clr), GetBValue(clr));
- SetDlgItemText(IDC_RGBBOX, strRGB);
- ::ReleaseDC(NULL, hDC);
- }
- CDialog::OnTimer(nIDEvent);
- }
- void CColorSnapDlg::OnLButtonDown(UINT nFlags, CPoint point)
- {
- // TODO: Add your message handler code here and/or call default
- if(bCaptureWay) //bCaptureWay==1表示SetCapture方法捕获全屏鼠标
- SetCapture();
- CDialog::OnLButtonDown(nFlags, point);
- }
- void CColorSnapDlg::OnLButtonUp(UINT nFlags, CPoint point)
- {
- // TODO: Add your message handler code here and/or call default
- if(bCaptureWay)
- ReleaseCapture();
- //正常的鼠标在应用程序的窗口客户群外的地方抬起是不会响应WM_LBUTTONDOWN的,这里会响应是因为SetCapture将捕获该函数之后的所有鼠标动作,不管它是否在应用程序的窗口客户区范围内。
- CDialog::OnLButtonUp(nFlags, point);
- }
- void CColorSnapDlg::OnButton1()
- {
- // TODO: Add your control notification handler code here
- //使用定时器方法捕获全屏鼠标
- bCaptureWay = false;
- if(bTimerRunning)
- KillTimer(1);
- SetTimer(1, 1, NULL); //1ms发一次WM_TIMER
- bTimerRunning = true;
- }
- void CColorSnapDlg::OnButton2()
- {
- // TODO: Add your control notification handler code here
- //使用SetCapture方法捕获全屏鼠标
- bCaptureWay = true;
- if(bTimerRunning){
- KillTimer(1);
- bTimerRunning = false;
- }
- }
- void CColorSnapDlg::OnDestroy()
- {
- CDialog::OnDestroy();
- // TODO: Add your message handler code here
- if(bTimerRunning)
- KillTimer(1);
- }