Windows

 1 #include <windows.h>
 2 #include <stdio.h>
 3 
 4 LRESULT CALLBACK WinSunProc(
 5 HWND hwnd,      // handle to window
 6 UINT uMsg,      // message identifier
 7 WPARAM wParam,   // first message parameter
 8 LPARAM lParam   // second message parameter
 9 );
10 
11 int WINAPI WinMain(
12 HINSTANCE hInstance,      // handle to current instance
13 HINSTANCE hPrevInstance,     // handle to previous instance
14 LPSTR lpCmdLine,      // command line
15 int nCmdShow        // show state
16 )
17 {
18     
19    WNDCLASS wndcls;
20    wndcls.cbClsExtra=0;
21    wndcls.cbWndExtra=0;
22    wndcls.hbrBackground=(HBRUSH)GetStockObject(BLACK_BRUSH);
23    wndcls.hCursor=LoadCursor(NULL,IDC_ARROW);
24    wndcls.hIcon=LoadIcon(NULL,IDI_APPLICATION);
25    wndcls.hInstance=hInstance;  //应用程序实例句柄由 WinMain 函数传进来
26    wndcls.lpfnWndProc=WinSunProc;
27    wndcls.lpszClassName="xx";
28    wndcls.lpszMenuName=NULL;
29    wndcls.style=CS_HREDRAW | CS_VREDRAW;
30 
31    //注册窗口类
32    RegisterClass(&wndcls);
33 
34    //创建窗口
35    HWND hwnd;
36    hwnd=CreateWindow("xx","第一个窗口",
37    WS_OVERLAPPEDWINDOW,0,0,600,400,NULL,NULL,hInstance,NULL);
38 
39    //显示窗口和更新窗口
40    ShowWindow(hwnd,SW_SHOWNORMAL);
41    UpdateWindow(hwnd);
42 
43    //定义消息结构体，进行消息循环
44    MSG msg;
45    while(GetMessage(&msg,NULL,0,0))
46    {
47      TranslateMessage(&msg);
48      DispatchMessage(&msg);
49    }
50      
51     return msg.wParam ;
52 }
53 
54 LRESULT CALLBACK WinSunProc(
55 HWND hwnd,      // handle to window
56 UINT uMsg,      // message identifier
57 WPARAM wParam,   // first message parameter
58 LPARAM lParam   // second message parameter
59 )
60 {
61    switch(uMsg)
62    {
63      case WM_CHAR:
64           char szChar[20];
65           sprintf(szChar,"char code is %d",wParam);
66           MessageBox(hwnd,szChar,"char",0);
67           break;
68     case WM_LBUTTONDOWN:
69           MessageBox(hwnd,"m ouse clicked","message",0);
70           HDC hdc;
71           hdc=GetDC(hwnd);     //不能在响应 WM_PAINT 消息时调用
72           TextOut(hdc,0,50,"点击鼠标之后产生的字符串",strlen("点击鼠标之后产生的字符串"));
73           ReleaseDC(hwnd,hdc);
74           break;
75     case WM_PAINT:
76           HDC hDC;
77           PAINTSTRUCT ps;
78           hDC=BeginPaint(hwnd,&ps);     //BeginPaint 只能在响应 WM_PAINT 消息时调用
79           TextOut(hDC,0,0,"第一个窗口绘制成功",strlen("第一个窗口绘制成功"));
80           EndPaint(hwnd,&ps);
81           break;
82     case WM_CLOSE:
83           if(IDYES==MessageBox(hwnd," 是否真的结束？","message",MB_YESNO))
84           {
85              DestroyWindow(hwnd);
86           }
87           break;
88    case WM_DESTROY:
89          PostQuitMessage(0);
90          break;
91    default:
92          return DefWindowProc(hwnd,uMsg,wParam,lParam);
93    }
94    return 0;
95 }