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C/C++ Source or Header  |  1988-08-11  |  2.6 KB  |  80 lines
  1. /*
  2.  *  RoundRect
  3.  *
  4.  *  This program demonstrates the use of the function RoundRect.
  5.  *  It gets a DC and then draws a rectangle with rounded corners in the 
  6.  *  client area.
  7.  *
  8.  */
  9.  
  10. #include "windows.h"
  11.  
  12. /* Procedure called when the application is loaded for the first time */
  13. BOOL WinInit( hInstance )
  14. HANDLE hInstance;
  15. {
  16.     WNDCLASS   wcClass;
  17.  
  18.     /* registering the parent window class */
  19.     wcClass.hCursor        = LoadCursor( NULL, IDC_ARROW );
  20.     wcClass.hIcon          = LoadIcon (hInstance, (LPSTR)"WindowIcon");
  21.     wcClass.lpszMenuName   = (LPSTR)NULL;
  22.     wcClass.lpszClassName  = (LPSTR)"Rrect";
  23.     wcClass.hbrBackground  = (HBRUSH)GetStockObject( WHITE_BRUSH );
  24.     wcClass.hInstance      = hInstance;
  25.     wcClass.style          = CS_HREDRAW | CS_VREDRAW;
  26.     wcClass.lpfnWndProc    = DefWindowProc;
  27.     wcClass.cbClsExtra     = 0;
  28.     wcClass.cbWndExtra     = 0;
  29.  
  30.     RegisterClass( (LPWNDCLASS)&wcClass );
  31.     return TRUE;        /* Initialization succeeded */
  32. }
  33.  
  34. int PASCAL WinMain( hInstance, hPrevInstance, lpszCmdLine, cmdShow )
  35. HANDLE hInstance, hPrevInstance;
  36. LPSTR lpszCmdLine;
  37. int cmdShow;
  38. {
  39.     HWND  hWnd;             /* Handle to the parent window    */
  40.     BOOL  bRect;            /* flag for RoundRect routine     */
  41.     HDC   hDC;              /* display context of client area */
  42.  
  43.     WinInit (hInstance);
  44.  
  45.     hWnd = CreateWindow((LPSTR)"Rrect",
  46.                         (LPSTR)"Drawing Round Rectangle",
  47.                         WS_OVERLAPPEDWINDOW,
  48.                         50,                /* x         */
  49.                         50,                /* y         */
  50.                         600,               /* width     */
  51.                         250,               /* height    */
  52.                         (HWND)NULL,        /* no parent */
  53.                         (HMENU)NULL,       /* use class menu */
  54.                         (HANDLE)hInstance, /* handle to window instance */
  55.                         (LPSTR)NULL        /* no params to pass on */
  56.                        );
  57.  
  58.     /* Make window visible according to the way the app is activated */
  59.     ShowWindow( hWnd, cmdShow );
  60.     UpdateWindow( hWnd );
  61.  
  62.     /* draw the round rectangle on the client area */
  63.     hDC = GetDC (hWnd);
  64.     bRect = RoundRect (hDC, 50, 50, 175, 150, 25, 20);
  65.     ReleaseDC (hWnd, hDC);
  66.     
  67.     /* return code for RoundRect routine */
  68.     if (bRect)
  69.       {  MessageBox (hWnd, (LPSTR)"The rectangle is drawn",
  70.                      (LPSTR)"Done", MB_OK);
  71.       }
  72.     else 
  73.       {  MessageBox (hWnd, (LPSTR)"The rectangle is not drawn",
  74.                      (LPSTR)NULL, MB_OK);
  75.       }
  76.  
  77.     return 0;
  78. }
  79.  
  80.