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c:graphics.h:kbhit [2015/05/06 23:06] (current)
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 +===== kbhit =====
 +
 +
 +====Syntax of kbhit ==== 
 + <code c>
 +#include "graphics.h"
 +int kbhit(void);
 +  </code>
 +
 +
 +==== Description of kbhit ==== 
 +<code c>
 +The kbhit function is available in the winbgim implementation of BGI
 +graphics. You do not need to include conio.h; just include graphics.h.
 +The function returns true (non-zero) if there is a character in the input
 +buffer ready to read. Otherwise it returns false. In order to work, the
 +user must click in the graphics window (i.e., the Windows focus must be
 +in the graphics window).
 +</code>
 +
 +
 +==== Example of kbhit ====
 +<code c>
 +#include "graphics.h"
 +#include <stdio.h>// Provides sprintf
 +
 +void outintxy(int x, int y, int value);
 +
 +int main( )
 +{
 +    int i;
 +
 +    // Initialize the graphics window.
 +    initwindow(400, 300);
 +
 +    // Convert some numbers to strings and draw them in graphics window:
 +    outtextxy(20, 130, "Click in this graphics window,");
 +    outtextxy(20, 140, "and then press a key to stop.");
 +    outtextxy(10, 10, "Here are some numbers:");
 +    for (i = 0; !kbhit( ); i++)
 +    {
 +  outintxy(20 + (i/10)*40 , (i % 10)*+10, i);
 +  delay(4000);
 +    }
 +
 +    closegraph( );
 +}
 +
 +void outintxy(int x, int y, int value)
 +{
 +   char digit_string[20];
 +   sprintf(digit_string, "%d", value);
 +   outtextxy(x, y, digit_string);
 +}
 +</code>
 +
 +
 +==== See also ====
 +[[getch]]
 +
 +
 +===== output of kbhit example ===== 
 +
 +    no output of example at the moment
 +    do not hesitate and add it...  
 +
 +
  
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c/graphics.h/kbhit.txt · Last modified: 2015/05/06 23:06 (external edit)

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