/*     EXAMPLE 12:  Updating covered windows automatically
     ----------------------------------------------------------------------*/
     #include <conio.h>
     #include <dos.h>
     #include "wndwc20.h"

     void main()
     {
         qinit();
         initwindow( LIGHTGRAY_BG, 1, 0 );
         setwindowmodes( VIRTUALMODE );
         setvirtualsize( 20, 100 );              /* 20 rows by 100 columns */
         makewindow( 5, 20, 15, 40, LIGHTCYAN+BLUE_BG, WHITE+BLUE_BG,
                     SINGLE_BORDER, WINDOW1 );
         setwindowmodes( 0 );                    /* Back to default modes. */
         makewindow( 7, 30, 16, 18, WHITE+GREEN_BG, GREEN_BG, DOUBLE_BORDER,
                     WINDOW2 );
         delay( 2000 );           /* Make sure we see where the cursor is. */
         writetovirtual( WINDOW1 );     /* Now write to the virtual screen */
         qfill(1,1,crt_rows,crt_cols,SAMEATTR,'?');  /* Fill screen w/data */
         titlewindow( TOP, LEFT, YELLOW+BLUE_BG, " Virtual Window " );
         wwrite( 4, 8, " >" );                  /* Let's get our bearings. */
         qwriteeos( tws.wndwattr+BLINK, "+" );
         qwriteeos( SAMEATTR, "<- Row 4, Column 10 " );
         vviewrc( 4, 10 );
         vupdatewindow();        /* Update the complete window on the CRT. */
         delay( 1000 );
         removewindow();
         delay( 2000 );           /* Make sure we see where the cursor is. */
         removewindow();
         getch();
     }