VC高手的经验总结——vc实用小技巧.doc

vc实用小技巧 ?一、 一次只运行一个程序实例下列两种方式都可以实现，?建议采用第二种方式：?1、 if( FindWindow(NULL,程序标题))???????? ? exit(0);? 2、BOOL CDemoTBarEApp::InstanceIsRun() { HANDLE m_hMutex; m_hMutex = ::CreateMutex(NULL, TRUE, _T(YourApplication)); ASSERT(m_hMutex); if (GetLastError() == ERROR_ALREADY_EXISTS) {? m_hMutex = NULL;? return TRUE;//实例已经运行 } return FALSE;//实例未运行}? 二、 装载光标SetCursor(AfxGetApp()-LoadStandardCursor(IDC_WAIT));　　其中::SetCursor()是全局函数，用来设置整个例程的光标参数是宏定义光标句柄。AfxGetApp ()是一个系统函数，它返回当前的一个CWinApp对象。其成员函数LoadStandardCursor()用来读取一个系统指针，每一种系统指针的具体宏定义如下：IDC_APPSTARTING? 带小沙漏的标准箭头IDC_ARROW? 标准箭头IDC_CROSS? 十字光标（用于定位）IDC_HAND? Windows 2000：手型IDC_HELP? 带问号的箭头IDC_IBEAM? I型标IDC_ICON? Obsolete for applications marked version 4.0 or later. IDC_NO?? 禁止符号IDC_SIZE? Obsolete for applications marked version 4.0 or later. Use IDC_SIZEALL. IDC_SIZEALL? 十字箭头IDC_SIZENESW? 指向东北和西南的双向箭头IDC_SIZENS? 指向南和北的双向箭头IDC_SIZENWSE? 指向西北和东南的双向箭头IDC_SIZEWE? 指向东西的双向箭头IDC_UPARROW? 上箭头IDC_WAIT? 沙漏获得主框架： CM pMainframe = (CMainFrame *) AfxGetApp()-m_pMainWnd;.获取应用程序的实例句柄：????? Example: HANDLE hInstance=AfxGetInstanceHandle();获得应用程序主窗口的指针：????? Example: AfxGetMainWnd() -ShowWindow(SW_SHOWMAXMIZED); //使程序最大化 四、重新建立字体的代码 if(m_fontLogo.m_hObject)? m_fontLogo.Detach(); m_fontLogo.CreateFont(nHeight, 0, 0, 0, nWeight, bItalic, bUnderline,0,0,0,0,0,0, Name); 五、用指定颜色填充区域 dc.FillSolidRect(rect, ::GetSysColor(COLOR_3DFACE)); 六、绘制立体字体效果的字体，很值得一看void CTestView::OnPaint() { CPaintDC dc(this); // device context for painting? CRect rect; GetWindowRect(rect); CFont? m_fontLogo; m_fontLogo.CreateFont(24, 0, 0, 0, FW_BOLD, true,? FALSE,0,0,0,0,0,0, Arial); CString m_LogoText; m_LogoText=_T(Benlux Pro3D System); dc.SetBkMode(TRANSPARENT); CFont * OldFont = dc.SelectObject(m_fontLogo); // draw text in DC COLORREF OldColor = dc.SetTextColor( ::GetSysColor( COLOR_3DHILIGHT)); rect.right = rect.Width(); rect.bottom = rect.Height(); rect.left = rect.top = 0; dc.FillSolidRect(rect, ::GetSysColor(COLOR_3DFACE)); dc.DrawText( m_LogoText, rect + CP