计算机程序设计语言与方法_lppt课件

1、Windows (Win32) APIlAPI(Application Programming Interface)lWin32环境下的一切运用程序都直接或间接地调用Windows提供得Win32 API函数.l动态链接库l组件对象模型(COM).lMSDN的运用Windows API 调用本卷须知l动态链接库查找顺序l运用程序所在的当前目录lWindows目录lWindows系统目录l系统环境变量指示的目录Windows编程编程lWinMain主函数主函数l窗体构造体窗体构造体l注册窗体注册窗体l构造和显示窗体构造和显示窗体l音讯构造体音讯构造体l回调函数回调函数l音讯循环音讯循环l音讯处置

2、音讯处置WinMain函数函数lint WINAPI WinMain( lHINSTANCE hInstance, / handle to current instance lHINSTANCE hPrevInstance, / handle to previous instance lLPSTR lpCmdLine, / command line lint nCmdShow / show state l);窗体构造体窗体构造体ltypedef struct _WNDCLASS lUINT style; /显示风格显示风格lWNDPROC lpfnWndProc; /回调函数回调函数lint

3、cbClsExtra; /类额外内存类额外内存lint cbWndExtra; /窗体额外内存窗体额外内存lHINSTANCE hInstance; /实例句柄实例句柄lHICON hIcon; /图标类型图标类型lHCURSOR hCursor; /光标类型光标类型lHBRUSH hbrBackground; /背景类型背景类型lLPCTSTR lpszMenuName; /菜单类型菜单类型lLPCTSTR lpszClassName; /类称号类称号l WNDCLASS, *PWNDCLASS; 注册窗体类lATOM RegisterClass( lCONST WNDCLASS *lpWn

4、dClass / class data l);窗体构造lHWND CreateWindow( lLPCTSTR lpClassName, / registered class namel LPCTSTR lpWindowName, / window namel DWORD dwStyle, / window style lint x, / horizontal position of window lint y, / vertical position of window lint nWidth, / window width lint nHeight, / window height lHW

5、ND hWndParent, / handle to parent or owner windowl HMENU hMenu, / menu handle or child identifier lHINSTANCE hInstance, / handle to application instance lLPVOID lpParam / window-creation data l);窗体显示lBOOL ShowWindow(l HWND hWnd, / handle to window lint nCmdShow / show statel );窗体更新lBOOL UpdateWindow

6、( lHWND hWnd / handle to window l);音讯构造体音讯构造体ltypedef struct tagMSG lHWND hwnd; /音讯所属窗体句柄音讯所属窗体句柄(类似指类似指针针)lUINT message; /音讯本身音讯本身(宏表示宏表示)lWPARAM wParam; /音讯额外信息音讯额外信息(整数整数)lLPARAM lParam; /音讯额外信息音讯额外信息(整数整数)lDWORD time; /发送时间发送时间lPOINT pt;/音讯发送是光标位置音讯发送是光标位置l MSG, *PMSG; 回调函数回调函数lLRESULT CALLBACK

7、WindowProc( lHWND hwnd, / handle to window lUINT uMsg, / message identifier lWPARAM wParam, / first message parameter lLPARAM lParam / second message parameter l);获取音讯lBOOL GetMessage(l LPMSG lpMsg, / message information lHWND hWnd, / handle to window lUINT wMsgFilterMin, / first message lUINT wMsgFilterMax / last message l);音讯转换lBOOL TranslateMessage(l CONST MSG *