libtest/hello.c

   1 #include <windows.h>
   2
   3 char szAppName[] = "Hello";
   4
   5 long FAR PASCAL WndProc(HWND, UINT, WPARAM, LPARAM);
   6
   7 int PASCAL WinMain (HINSTANCE hInstance, HINSTANCE hPrevInst, LPSTR lpszCmdLine,
   8                          int nCmdShow)
   9 {
  10         HWND hwnd;
  11         MSG msg;
  12         WNDCLASS wndclass;
  13
  14         if(!hPrevInst) {
  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 = GetStockObject(WHITE_BRUSH);
  24                 wndclass.lpszMenuName = NULL;
  25                 wndclass.lpszClassName = szAppName;
  26
  27                 RegisterClass(&wndclass);
  28
  29
  30         }
  31
  32         hwnd = CreateWindow(szAppName, szAppName,
  33          WS_HSCROLL | WS_VSCROLL | WS_OVERLAPPEDWINDOW,
  34          CW_USEDEFAULT, CW_USEDEFAULT, 600,
  35          400, NULL, NULL, hInstance, NULL);
  36
  37         ShowWindow(hwnd, nCmdShow);
  38         UpdateWindow(hwnd);
  39
  40
  41         while(GetMessage(&msg, NULL, 0, 0)) {
  42                 TranslateMessage(&msg);
  43                 DispatchMessage(&msg);
  44         }
  45         return msg.wParam;
  46 }
  47
  48
  49
  50 long FAR PASCAL WndProc(HWND hwnd, UINT message, WPARAM wParam,
  51                                 LPARAM lParam)
  52 {
  53         HDC hdc;
  54         RECT rect;
  55         SIZE size;
  56         PAINTSTRUCT ps;
  57
  58         switch(message) {
  59
  60         case WM_PAINT:
  61                 hdc = BeginPaint(hwnd, &ps);
  62                 GetClientRect(hwnd, &rect);
  63                 InflateRect(&rect, -10, -10);
  64                 if( !IsRectEmpty( &rect ) )
  65                 {
  66                     GetTextExtentPoint32(hdc, szAppName, strlen(szAppName), &size);
  67                     SelectObject(hdc, GetStockObject(LTGRAY_BRUSH));
  68                     Rectangle(hdc, rect.left, rect.top, rect.right, rect.bottom);
  69                     rect.left = (rect.right + rect.left - size.cx) / 2;
  70                     rect.top  = (rect.bottom + rect.top - size.cy) / 2;
  71                     SetBkMode(hdc, TRANSPARENT);
  72                     TextOut(hdc, rect.left, rect.top, szAppName, strlen(szAppName) );
  73                 }
  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);
  82 }
  83