HELLOWIN.C
/*------------------------------------------------------------------------
HELLOWIN.C -- Displays "Hello, Windows 98!" in client area
(c) Charles Petzold, 1998
-----------------------------------------------------------------------*/
#include <windows.h>
LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
static TCHAR szAppName[] = TEXT ("HelloWin") ;
HWND hwnd ;
MSG msg ;
WNDCLASS wndclass ;
wndclass.style = CS_HREDRAW | CS_VREDRAW ; //使用或运算结合了两个窗口类别样式标识符， CS_HREDROW 是水平方向 ,CS_VredRow是垂直方向
wndclass.lpfnWndProc = WndProc ; //窗口消息处理程序的地址
///////////////预留额外空间////////////////
wndclass.cbClsExtra = 0 ;
wndclass.cbWndExtra = 0 ;
/////////////////////////////////////
wndclass.hInstance = hInstance ;//程序执行实体句柄
wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION) ; //设置一个图标
wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;//设置光标
wndclass.hbrBackground= (HBRUSH) GetStockObject (WHITE_BRUSH) ;//设置背景色
wndclass.lpszMenuNam = NULL ;//窗口类别菜单
wndclass.lpszClassName= szAppName ;//窗口消息处理程序的名称
if (!RegisterClass (&wndclass))
{
MessageBox ( NULL, TEXT ("This program requires Windows NT!"),
szAppName, MB_ICONERROR) ;
return 0 ;
}
hwnd = CreateWindow( szAppName, // window class name
TEXT ("The Hello Program"), // window caption
WS_OVERLAPPEDWINDOW, // window style
CW_USEDEFAULT,// initial x position 左上角x
CW_USEDEFAULT,// initial y position 左上角y
CW_USEDEFAULT,// initial x size 宽度
CW_USEDEFAULT,// initial y size 高度
NULL, // parent window handle
NULL, // window menu handle
hInstance, // program instance handle
NULL) ; // creation parameters
ShowWindow (hwnd, iCmdShow) ;
UpdateWindow (hwnd) ;
while (GetMessage (&msg, NULL, 0, 0))
{
TranslateMessage (&msg) ; //翻译消息
DispatchMessage (&msg) ; //传送消息
}
return msg.wParam ;
}
//以下是窗口消息处理程序
LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
HDC hdc ;
PAINTSTRUCT ps ; //包含一些窗口消息处理程式序，可以用来更新显示区域的内容。
RECT rect ;
switch (message)
{
case WM_CREATE:
PlaySound (TEXT ("hellowin.wav"), NULL, SND_FILENAME | SND_ASYNC) ;
return 0 ;
case WM_PAINT:
hdc = BeginPaint (hwnd, &ps) ;
GetClientRect (hwnd, &rect) ;
DrawText (hdc, TEXT ("Hello, Windows 98!"), -1, &rect,
DT_SINGLELINE | DT_CENTER | DT_VCENTER) ;
EndPaint (hwnd, &ps) ;
return 0 ;
case WM_DESTROY:
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}
WinMain
