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 }
