1 #include<windows.h>
  2 
  3 HINSTANCE hInst;
  4 HWND      hWnd;
  5 MSG          msg;
  6 char      lpszClassName[] = "窗口";
  7 char      *ShowText;
  8 
  9 ATOM      MyRegisterClass(HINSTANCE hInstance);
 10 BOOL      Create(HINSTANCE,int);
 11 int          Run();
 12 
 13 LRESULT   CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
 14 void      OnLButtonDown(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
 15 void      OnPaint(HWND hWnd,UINT message,WPARAM wParam,LPARAM lParam);
 16 void      OnDestroy(HWND hWnd,UINT message,WPARAM wParam,LPARAM lParam);
 17 
 18 int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lPCmdLine, int nCmdShow)
 19 {
 20     MyRegisterClass(hInstance);
 21     Create(hInstance,nCmdShow);
 22     ShowWindow(hWnd,nCmdShow);
 23     UpdateWindow(hWnd);
 24     return Run();
 25 }
 26 
 27 ATOM MyRegisterClass(HINSTANCE hInstance)
 28 {
 29     WNDCLASS wc;
 30     wc.style = 0;
 31     wc.lpfnWndProc = WndProc;
 32     wc.cbClsExtra = 0;
 33     wc.cbWndExtra = 0;
 34     wc.hInstance = hInstance;
 35     wc.hIcon = LoadIcon(NULL,IDI_APPLICATION);
 36     wc.hCursor = LoadCursor(NULL,IDC_ARROW);
 37     wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
 38     wc.lpszMenuName = NULL;
 39     wc.lpszClassName = lpszClassName;
 40     return RegisterClass(&wc);
 41 }
 42 
 43 BOOL Create(HINSTANCE hInstance, int nCmdShow)
 44 {
 45     hWnd = CreateWindow(lpszClassName,"Windows",WS_OVERLAPPEDWINDOW,400,300,180,160,NULL,NULL,hInstance,NULL);
 46     return TRUE;
 47 }
 48 
 49 int Run()
 50 {
 51     while (GetMessage(&msg, NULL, 0, 0))
 52     {
 53         TranslateMessage(&msg);
 54         DispatchMessage(&msg);
 55     }
 56     return msg.wParam;
 57 }
 58 
 59 LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 60 {
 61     switch (message)
 62     {
 63     case WM_LBUTTONDOWN:
 64         OnLButtonDown(hWnd,message,wParam,lParam);
 65         break;
 66     case WM_PAINT:
 67         OnPaint(hWnd,message,wParam,lParam);
 68         break;
 69     default:
 70         return DefWindowProc(hWnd,message,wParam,lParam);
 71     }
 72     return 0;
 73 }
 74 
 75 void OnLButtonDown(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 76 {
 77     ShowText = "Hello!";#include<windows.h>
 78 
 79 HINSTANCE hInst;
 80 HWND      hWnd;
 81 MSG          msg;
 82 char      lpszClassName[] = "窗口";
 83 char      *ShowText;
 84 
 85 ATOM      MyRegisterClass(HINSTANCE hInstance);
 86 BOOL      Create(HINSTANCE,int);
 87 int          Run();
 88 
 89 LRESULT   CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
 90 void      OnLButtonDown(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
 91 void      OnPaint(HWND hWnd,UINT message,WPARAM wParam,LPARAM lParam);
 92 void      OnDestroy(HWND hWnd,UINT message,WPARAM wParam,LPARAM lParam);
 93 
 94 int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lPCmdLine, int nCmdShow)
 95 {
 96     MyRegisterClass(hInstance);
 97     Create(hInstance,nCmdShow);
 98     ShowWindow(hWnd,nCmdShow);
 99     UpdateWindow(hWnd);
100     return Run();
101 }
102 
103 ATOM MyRegisterClass(HINSTANCE hInstance)
104 {
105     WNDCLASS wc;
106     wc.style = 0;
107     wc.lpfnWndProc = WndProc;
108     wc.cbClsExtra = 0;
109     wc.cbWndExtra = 0;
110     wc.hInstance = hInstance;
111     wc.hIcon = LoadIcon(NULL,IDI_APPLICATION);
112     wc.hCursor = LoadCursor(NULL,IDC_ARROW);
113     wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
114     wc.lpszMenuName = NULL;
115     wc.lpszClassName = lpszClassName;
116     return RegisterClass(&wc);
117 }
118 
119 BOOL Create(HINSTANCE hInstance, int nCmdShow)
120 {
121     hWnd = CreateWindow(lpszClassName,"Windows",WS_OVERLAPPEDWINDOW,400,300,180,160,NULL,NULL,hInstance,NULL);
122     return TRUE;
123 }
124 
125 int Run()
126 {
127     while (GetMessage(&msg, NULL, 0, 0))
128     {
129         TranslateMessage(&msg);
130         DispatchMessage(&msg);
131     }
132     return msg.wParam;
133 }
134 
135 LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
136 {
137     switch (message)
138     {
139     case WM_LBUTTONDOWN:
140         OnLButtonDown(hWnd,message,wParam,lParam);
141         break;
142     case WM_PAINT:
143         OnPaint(hWnd,message,wParam,lParam);
144         break;
145     default:
146         return DefWindowProc(hWnd,message,wParam,lParam);
147     }
148     return 0;
149 }
150 
151 void OnLButtonDown(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
152 {
153     ShowText = "Hello!";
154     InvalidateRect(hWnd,NULL,1);
155 }
156 
157 void OnPaint(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
158 {
159     PAINTSTRUCT ps;
160     HDC hdc;
161     hdc = BeginPaint(hWnd,&ps);
162     TextOut(hdc,50,50,ShowText,6);
163     EndPaint(hWnd,&ps);
164 }
165 
166 void OnDestroy(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
167 {
168     PostQuitMessage(0);
169 }
170     InvalidateRect(hWnd,NULL,1);
171 }
172 
173 void OnPaint(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
174 {
175     PAINTSTRUCT ps;
176     HDC hdc;
177     hdc = BeginPaint(hWnd,&ps);
178     TextOut(hdc,50,50,ShowText,6);
179     EndPaint(hWnd,&ps);
180 }
181 
182 void OnDestroy(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
183 {
184     PostQuitMessage(0);
185 }