MFC学习之窗口基础

 1 #include<stdio.h>
 2 #include<string.h>
 3 #include<windows.h>
 4 
 5 /*声明winSunProc*/
 6 LRESULT CALLBACK WinSunProc(  HWND hwnd,      // handle to window
 7   UINT uMsg,      // message identifier
 8   WPARAM wParam,  // first message parameter
 9   LPARAM lParam   // second message parameter);
10 );
11 int WINAPI WinMain(  HINSTANCE hInstance,       // handle to current instance
12   HINSTANCE hPrevInstance,                // handle to previous instance
13   LPSTR lpCmdLine,          // command line
14   int nCmdShow              // show state);
15 )
16 {
17     WNDCLASS wndclass;
18     /*声明定义什么的*/    
19     wndclass.cbClsExtra = NULL;  
20     wndclass.cbWndExtra = NULL;
21     wndclass.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
22     wndclass.hCursor = LoadCursor(NULL,IDC_ARROW);
23     wndclass.hIcon = LoadIcon(NULL,IDI_ERROR);
24     wndclass.hInstance = hInstance;
25     wndclass.lpfnWndProc = WinSunProc ;
26     wndclass.lpszClassName = "Gxjun";
27     wndclass.lpszMenuName =NULL;
28     wndclass.style= CS_HREDRAW|CS_VREDRAW ;
29     RegisterClass(&wndclass);    //注册窗口函数
30     HWND hwnd;
31     hwnd =  CreateWindow("Gxjun","龚细军的第一个窗口程序",WS_OVERLAPPEDWINDOW,0,0,400,600,NULL,NULL,hInstance,NULL);  /*创建窗口*/
32     ShowWindow(hwnd,SW_SHOWNORMAL);    /*显示窗口*/
33     UpdateWindow(hwnd);     
34     MSG msg;
35     while(GetMessage(&msg,NULL,0,0))   
36     {
37        TranslateMessage(&msg);       /*该函数将虚拟键消息转换为字符消息*/
38 
39        DispatchMessage(&msg);        /*该函数分发一个消息给窗口程序。通常消息从GetMessage函数获得。
40                                      消息被分发到回调函数（过程函数)，作用是消息传递给操作系统，
41                                      然后操作系统去调用我们的回调函数，也就是说我们在窗体的过程函
42                                      数中处理消息*/
43     }
44 
45     return 0;
46 }
47 LRESULT CALLBACK WinSunProc(  HWND hwnd,      // handle to window
48   UINT uMsg,      // message identifier
49   WPARAM wParam,  // first message parameter
50   LPARAM lParam   // second message parameter);
51   )
52 {
53     
54     switch(uMsg)
55     {
56       case WM_CHAR:  
57           char str[26];
58           sprintf(str,"char is %d",wParam);
59           MessageBox(hwnd,str,"Gxjun",0);
60           break;
61       case WM_LBUTTONDOWN: 
62           MessageBox(hwnd,"mouse clicked","Gxjun",0);
63           HDC hdc;
64           /*PAINTSTRUCT  ps;*/
65           hdc=GetDC(hwnd);
66           TextOut(hdc,200,400,"我是胡萝卜头，呼叫北极站",strlen("我是胡萝卜头，呼叫北极站"));
67           ReleaseDC(hwnd,hdc);    /*函数释放设备上下文环境（DC）供其他应用程序使用。*/
68             break;
69       case WM_PAINT:
70            HDC hdc_1;
71            PAINTSTRUCT paints;
72            hdc_1 = BeginPaint(hwnd,&paints);
73            TextOut(hdc_1,0,0,"我是长城好哇",strlen("我是长城好哇"));
74           break;
75       case WM_CLOSE:
76          if(IDYES==MessageBox(hwnd,"哇哈哈,你丫的真的打算关掉吗？","卖萌之家",MB_YESNO))  {
77             DestroyWindow(hwnd);
78           }
79            break;
80       case WM_DESTROY:
81           PostQuitMessage(0);
82           break;
83       default:
84           return DefWindowProc(hwnd,uMsg,wParam, lParam);
85     }
86     return 0;
87 }