1 /*--------------------------------------------------------------
2 HELLOWIN.C--DisPlays "Hello, Windows!" in client area
3 (c) Charles Petzold, 1998
4 --------------------------------------------------------------*/
5 #include <windows.h>
6 LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
7
8 int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPreVInstance,
9 PSTR szCmdLine, int iCmdShow)
10 {
11 static TCHAR szAppName[] = TEXT("HelloWin");
12 HWND hwnd;
13 MSG msg;
14 WNDCLASS wndclass;
15
16 wndclass.style = CS_HREDRAW | CS_VREDRAW;
17 wndclass.lpfnWndProc = WndProc;
18 wndclass.cbClsExtra = 0;
19 wndclass.cbWndExtra = 0;
20 wndclass.hInstance = hInstance;
21 wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
22 wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
23 wndclass.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH);
24 wndclass.lpszMenuName = NULL;
25 wndclass.lpszClassName = szAppName;
26
27 if (!RegisterClass(&wndclass))
28 {
29 MessageBox(NULL, TEXT("This progam requires Windows NT!"),
30 szAppName, MB_ICONERROR);
31 return 0;
32 }
33
34 hwnd = CreateWindow(szAppName, //window class name
35 TEXT("The Hello Program"), //window caption
36 WS_OVERLAPPEDWINDOW, //window style
37 CW_USEDEFAULT, //initial x position
38 CW_USEDEFAULT, //initial y position
39 CW_USEDEFAULT, //initial x size
40 CW_USEDEFAULT, //initial y size
41 NULL, //parent window handle
42 NULL, //window menu handle
43 hInstance, //program instance
44 NULL //creation parameters
45 );
46 ShowWindow(hwnd, iCmdShow);
47 UpdateWindow(hwnd);
48
49 while (GetMessage(&msg, NULL, 0, 0))
50 {
51 TranslateMessage(&msg);
52 DispatchMessage(&msg);
53 }
54 return msg.wParam;
55 }
56
57 LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
58 {
59 HDC hdc;
60 PAINTSTRUCT ps;
61 RECT rect;
62
63 switch (message)
64 {
65 case WM_CREATE:
66 //PlaySound(TEXT("hellowin.wav"), NULL, SND_FILENAME | SND_ASYNC);
67 return 0;
68
69 case WM_PAINT:
70 hdc = BeginPaint(hwnd, &ps);
71 GetClientRect(hwnd, &rect);
72 DrawText(hdc, TEXT("Hello, windows!"), -1, &rect,
73 DT_SINGLELINE | DT_CENTER| DT_VCENTER);
74 EndPaint(hwnd, &ps);
75 return 0;
76
77 case WM_DESTROY:
78 PostQuitMessage(0);
79 return 0;
80 }
81 return DefWindowProc(hwnd, message, wParam, lParam);
