VC++编程实例与技巧.docVIP

//如何确定窗口的最大最小值以及如何定位窗口 //Modify the Application Class 1.初始化application’s window 的最大、最小值。先找到InitInstance()函数： pMainFrame-ShowWindow(SW_SHOWMAXIMIZED);//者 SW_SHOWMINIMIZED pMainFrame-UpdateWindow(); //Modify the Mainframe Class 1) modify the PreCreateWindow() function BOOL CMainFrame::PreCreateWindow(CREATESTRUCT cs) { // 2) to center window at 90% of full screen int xSize = ::GetSystemMetrics (SM_CXSCREEN); // 3) to keep document title out of main windows caption cs.style = ~ FWS_ADDTOTITLE; // 4) to remove min/max boxes cs.style = ~(WS_MAXIMIZEBOX|WS_MINIMIZEBOX); // 5) to fix your applications window size cs.style = ~WS_THICKFRAME; return CMDIFrameWnd::PreCreateWindow(cs); } int ySize = ::GetSystemMetrics (SM_CYSCREEN); cs.cx = xSize*9/10; cs.cy = ySize*9/10; cs.x = (xSize-cs.cx)/2; cs.y = (ySize-cs.cy)/2; //an include file that defines a projects registry keys //Modify the Application Class // 1) locate the SetRegistryKey() function and change argument to company key // (failure to do this will cause your applications options to be saved to // a .ini file in your systems os directory) SetRegistryKey(COMPANY_KEY); // 2) replace the pMainFrame-ShowWindow(m_nCmdShow); line in the InitInstance() // function with the following: UINT err; HKEY key; DWORD size, type; WINDOWPLACEMENT wp; if((err=RegOpenKeyEx( HKEY_CURRENT_USER,APPLICATION_KEY,0,KEY_READ,key)) == ERROR_SUCCESS ) { type = REG_BINARY; size = sizeof(WINDOWPLACEMENT); err=RegQueryValueEx( key,WINDOWPLACEMENT_KEY,0,type,(LPBYTE)wp,size ); RegCloseKey( key ); } if (err==ERROR_SUCCESS) { pMainFrame-SetWindowPlacement(wp); } else { pMainFrame-ShowWindow(m_nCmdShow); } pMainFrame-UpdateWindow(); //Modify the MainFrame Class // 1) load previous bar states at end of OnCreate() LoadBarState(Control Bar States); // 2) save toolbar state and screen size and position in OnClose() void CMainFrame::OnClose() { // save state of control bars SaveBarState(Control Bar States); // sa