模仿QQ2008截屏工具

// ScreenSpyDlg.cpp : 实现文件 // #include "stdafx.h" #include "ScreenSpy.h" #include "ScreenSpyDlg.h" #include "afxdialogex.h" #ifdef _DEBUG #define new DEBUG_NEW #endif CScreenSpyDlg::CScreenSpyDlg(CWnd* pParent /*=NULL*/) : CDialogEx(CScreenSpyDlg::IDD, pParent) { //初始化像皮筋类 m_RectTracker.m_nStyle=CRectTracker::resizeInside|CRectTracker::dottedLine; m_RectTracker.m_rect.SetRect(-1,-1,-1,-1); m_hCursor=AfxGetApp()->LoadCursor(ARROW_COLOR); m_bDraw=FALSE; m_bStartDraw=FALSE; m_bShowInfo = FALSE; m_startPt=0; //获取屏幕分辩率 m_xScreen = GetSystemMetrics(SM_CXSCREEN); m_yScreen = GetSystemMetrics(SM_CYSCREEN); //截取屏幕到位图中 CRect rect(0, 0,m_xScreen,m_yScreen); m_pBitmap=CBitmap::FromHandle(CopyScreenToBitmap(&rect)); //要更新的区域 m_rgn.CreateRectRgn(0,0,50,50); m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); } void CScreenSpyDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); } BEGIN_MESSAGE_MAP(CScreenSpyDlg, CDialog) //{{AFX_MSG_MAP(CScreenSpyDlg) ON_WM_PAINT() ON_WM_QUERYDRAGICON() ON_WM_MOUSEMOVE() ON_WM_LBUTTONDOWN() ON_WM_LBUTTONUP() ON_WM_LBUTTONDBLCLK() ON_WM_RBUTTONDOWN() ON_WM_ERASEBKGND() ON_WM_SETCURSOR() //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CScreenSpyDlg message handlers BOOL CScreenSpyDlg::OnInitDialog() { CDialog::OnInitDialog(); //把对化框设置成全屏顶层窗口 SetWindowPos(&wndTopMost,0,0,m_xScreen,m_yScreen,SWP_SHOWWINDOW); //捕获按键消息窗口,将对话框的句柄传递到CCatchScreenApp中 ((CScreenSpyApp*)AfxGetApp())->m_hwndDlg=m_hWnd; SetIcon(m_hIcon, TRUE); SetIcon(m_hIcon, FALSE); return TRUE; } void CScreenSpyDlg::OnPaint() { if (IsIconic()) { CPaintDC dc(this); // device context for painting SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0); 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; dc.DrawIcon(x, y, m_hIcon); } else { CPaintDC dc(this); if(m_bShowInfo&&m_bStartDraw) { CRect rect; m_RectTracker.GetTrueRect(&rect); ShowInfo(rect); } //画出像皮筋矩形 if(m_bStartDraw) { m_RectTracker.Draw(&dc); } CDialog::OnPaint(); } } /************************************************************************/ /* 显示相关的信息 inRect为传进来的橡皮筋矩形 */ /************************************************************************/ void CScreenSpyDlg::ShowInfo(CRect &inRect) { //截取矩形大小信息离鼠标间隔 const int space=3; CClientDC dc(this); //设置字体颜色大小 CPoint pt; CPen pen(PS_SOLID,1,RGB(147,147,147)); dc.SetTextColor(RGB(255,255,255)); CFont cfont; cfont.CreatePointFont(90,L"宋体"); dc.SelectObject(&cfont); //得到字体宽度和高度 GetCursorPos(&pt); dc.SetBkMode(TRANSPARENT); TEXTMETRIC tm; int charHeight; CSize size; int lineLength; dc.GetTextMetrics(&tm); charHeight = tm.tmHeight+tm.tmExternalLeading + 10; size=dc.GetTextExtent(L"%d x %d",strlen(" %d x %d ")); lineLength=size.cx; //初始化矩形, 以保证写下一行文字 20*50 CRect rect(inRect.left,inRect.top-20,inRect.left+70,inRect.top); int x = GetDeviceCaps(dc, HORZRES); int y = GetDeviceCaps(dc, VERTRES); //创建临时矩形 CRect rectTemp; //当矩形到达桌面边缘时调整方向和大小 if((pt.x+rect.Width())>=x) { //桌面上方显示不下矩形 rectTemp=rect; rectTemp.left=rect.left-rect.Width()-space*2; rectTemp.right=rect.right-rect.Width()-space*2;; rect=rectTemp; } if((pt.y-rect.Height())<=0) { //桌面右方显示不下矩形 rectTemp=rect; rectTemp.top=rect.top+rect.Height()+space*2;; rectTemp.bottom=rect.bottom+rect.Height()+space*2;; rect=rectTemp; } //创建灰色画刷画矩形 dc.SelectObject((HBRUSH)GetStockObject(GRAY_BRUSH)); dc.Rectangle(rect); rect.top+=2; //在矩形中显示文字 CString string; string.Format(L" %d x %d",inRect.Width(),inRect.Height()); dc.TextOut(rect.left,rect.top,string); } HCURSOR CScreenSpyDlg::OnQueryDragIcon() { return (HCURSOR) m_hIcon; } void CScreenSpyDlg::OnOK() { } void CScreenSpyDlg::OnCancel() { if(m_bStartDraw) { m_bStartDraw=FALSE; m_bDraw=FALSE; m_RectTracker.m_rect.SetRect(-1,-1,-1,-1); PaintWindow(); } else { CDialog::OnCancel(); } } void CScreenSpyDlg::OnMouseMove(UINT nFlags, CPoint point) { if(m_bDraw) { m_RectTracker.m_rect.SetRect(m_startPt.x+1,m_startPt.y+1,point.x,point.y); m_bStartDraw=TRUE; PaintWindow(); } CDialog::OnMouseMove(nFlags, point); } void CScreenSpyDlg::OnLButtonDown(UINT nFlags, CPoint point) { int nHitTest; nHitTest=m_RectTracker.HitTest(point); m_bShowInfo= TRUE; PaintWindow(); //判断击中位置 if(nHitTest<0) { if(!m_bStartDraw) { m_startPt=point; m_bDraw=TRUE; PaintWindow(); } } else { if(m_bStartDraw) { m_RectTracker.Track(this,point,TRUE); SendMessage(WM_LBUTTONUP,NULL,NULL); PaintWindow(); } } CDialog::OnLButtonDown(nFlags, point); } void CScreenSpyDlg::OnLButtonUp(UINT nFlags, CPoint point) { m_bDraw=FALSE; //m_bShowInfo = FALSE; PaintWindow(); CDialog::OnLButtonUp(nFlags, point); } void CScreenSpyDlg::OnLButtonDblClk(UINT nFlags, CPoint point) { int nHitTest; nHitTest=m_RectTracker.HitTest(point); if(nHitTest==8) { CopyScreenToBitmap(m_RectTracker.m_rect,TRUE); PostQuitMessage(0); } CDialog::OnLButtonDblClk(nFlags, point); } void CScreenSpyDlg::OnRButtonDown(UINT nFlags, CPoint point) { if(m_bStartDraw) { //如果已经截取矩则清除截取矩形 m_bStartDraw=FALSE; m_RectTracker.m_rect.SetRect(-1,-1,-1,-1); PaintWindow(); } else { PostQuitMessage(0); } CDialog::OnRButtonDown(nFlags, point); } BOOL CScreenSpyDlg::OnEraseBkgnd(CDC* pDC) { BITMAP bmp; m_pBitmap->GetBitmap(&bmp); CDC dcCompatible; dcCompatible.CreateCompatibleDC(pDC); dcCompatible.SelectObject(m_pBitmap); CRect rect; GetClientRect(&rect); pDC->BitBlt(0,0,rect.Width(),rect.Height(),&dcCompatible,0,0,SRCCOPY); return TRUE; } BOOL CScreenSpyDlg::OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message) { if (pWnd == this && m_RectTracker.SetCursor(this, nHitTest)) { return TRUE; } else { //设置彩色光标 SetCursor(m_hCursor); return TRUE; } } //*********************增加的函数********************************************************** //考贝屏幕,这段代码是拿来主义 呵呵 HBITMAP CScreenSpyDlg::CopyScreenToBitmap(LPRECT lpRect,BOOL bSave) //lpRect 代表选定区域 { HDC hScrDC, hMemDC; // 屏幕和内存设备描述表 HBITMAP hBitmap, hOldBitmap; // 位图句柄 int nX, nY, nX2, nY2; // 选定区域坐标 int nWidth, nHeight; // 确保选定区域不为空矩形 if (IsRectEmpty(lpRect)) return NULL; //为屏幕创建设备描述表 hScrDC = CreateDC(L"DISPLAY", NULL, NULL, NULL); //为屏幕设备描述表创建兼容的内存设备描述表 hMemDC = CreateCompatibleDC(hScrDC); // 获得选定区域坐标 nX = lpRect->left; nY = lpRect->top; nX2 = lpRect->right; nY2 = lpRect->bottom; //确保选定区域是可见的 if (nX < 0) nX = 0; if (nY < 0) nY = 0; if (nX2 > m_xScreen) nX2 = m_xScreen; if (nY2 > m_yScreen) nY2 = m_yScreen; nWidth = nX2 - nX; nHeight = nY2 - nY; // 创建一个与屏幕设备描述表兼容的位图 hBitmap = CreateCompatibleBitmap (hScrDC, nWidth, nHeight); // 把新位图选到内存设备描述表中 hOldBitmap = (HBITMAP)SelectObject(hMemDC, hBitmap); // 把屏幕设备描述表拷贝到内存设备描述表中 if(bSave) { CDC dcCompatible; dcCompatible.CreateCompatibleDC(CDC::FromHandle(hM