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- #include <conio.h>
- #include <wgt.h>
- /* WORDUP Graphics Toolkit Version 3.5
- Demonstration program 5
-
- Draws vertical lines of different colours, and rotates the colours
- until you hit a key.
- Note: Fast colour rotation with many colours causes 'snow'
- */
-
- int x,y,col;
- color palette[256];
-
-
- void main(void)
- {
- vga256(); // initializes system
-
- for (y=0; y<64; y++)
- wsetrgb(y,y,y,y,&palette); // sets first 64 colours to grey
- // note the use of &
-
- for (y=0; y<64; y++)
- wsetrgb(y+64,y,0,0,&palette); // next 64 to red
- for (y=0; y<64; y++)
- wsetrgb(y+128,0,y,0,&palette); // green
- for (y=0; y<64; y++)
- wsetrgb(y+192,0,0,y,&palette); // blue
- wsetpalette(0,255,palette); // and finally change them
- // all at once
-
- for (y=0; y<200; y++) // draw lines down the screen
- {
- wsetcolor(y);
- wline(0,y,319,y);
- }
-
- do {
- wcolrotate(1,255,0,palette);
- } while (kbhit() == 0);
- getch(); // get the key
-
- do {
- wcolrotate(1,255,1,palette);
- } while (kbhit() == 0);
- getch(); // get the key
-
- do {
- wcolrotate(1,100,1,palette);
- wcolrotate(100,255,0,palette);
- } while (kbhit() == 0);
- getch(); // get the key
-
-
- textmode(C80); // used to return to text mode
- }