Windows programming 1

One of the simplest windows must include two functions:

1. Entry function: WinMain

2. Window procedure callback function: WndProc

The structure is as follows:

1#include <windows.h>2 3 //window procedure callback function4 LRESULT CALLBACK WndProc (HWND hwnd, UINT MSG, WPARAM WPARAM, LPARAM LPARAM)5 {6     //processing of various messages7     Switch(msg)8     {9      Casewm_create:Ten          One          Break; A  -  -     default: the          Break; -     } -  -     returnDefWindowProc (hwnd, MSG, wparam, lparam);//send the message to the system to handle it. + } -  +  A //equivalent to the main function in the C language. Returns the parameters of the message at intWINAPI WinMain (HInstance hinstance,//Current instance handle - hinstance Hprevinsttance, - PSTR CmdLine, -                    intcmdshow) - { - msg msg; in     //1. Create a window - wndclass wndclass; to         //1.1 Design window class +Wndclass.lpfnwndproc =(WNDPROC) WNDPROC; -           //set the remaining properties of Wndclass the         //2.2 Register window class *           if(! RegisterClass (&wndclass)) $               return 0;Panax Notoginseng         //2.3 Creating Windows -HWND hwd = CreateWindow ("Z","X", the Ws_overlappedwindow, +                -, A               0, the                -, +                $, - NULL, $ NULL, $ hinstance, - NULL); -         //2.4 Displaying and updating Windows the ShowWindow (HWD, cmdshow); - UpdateWindow (HWD);Wuyi     //2. Message Loops the            while(GetMessage (&msg,null,0,0))//getmessage The message in the message queue and put it in Msg. -           { WuTranslateMessage (&AMP;MSG);//translating keyboard Messages -DispatchMessage (&AMP;MSG);//Send to WndProc processing About           } $     returnMsg.wparam;//returns the parameters of the message -}

Windows programming 1