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c:graphics.h:getmoderange

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c:graphics.h:getmoderange [2015/05/06 23:06] (current)
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 +===== getmoderange =====
 +
 +
 +====Syntax of getmoderange ==== 
 + <code c>
 +#include <graphics.h>
 +void getmoderange(int graphdriver, int *lomode, int *himode);
 +  </code>
 +
 +
 +==== Description of getmoderange ==== 
 +<code c>
 +getmoderange gets the range of valid graphics modes for the given
 +graphics driver, graphdriver. The lowest permissible mode value is
 +returned in *lomode, and the highest permissible value is *himode. If
 +graphdriver specifies an invalid graphics driver, both *lomode and
 +*himode are set to -1. If the value of graphdriver is -1, the currently
 +loaded driver modes are given.
 +</code>
 +
 +
 +==== Example of getmoderange ====
 +<code c>
 +/* getmoderange example */
 +
 +#include <graphics.h>
 +#include <stdlib.h>
 +#include <stdio.h>
 +#include <conio.h>
 +
 +int main(void)
 +{
 +   /* request autodetection */
 +   int gdriver = DETECT, gmode, errorcode;
 +   int midx, midy;
 +   int low, high;
 +   char mrange[80];
 +
 +   /* initialize graphics and local variables */
 +   initgraph(&gdriver, &gmode, "");
 +
 +   /* read result of initialization */
 +   errorcode = graphresult();
 +   if (errorcode != grOk) {  /* an error occurred */
 +   printf("Graphics error: %s\n", grapherrormsg(errorcode));
 +
 +   printf("Press any key to halt:");
 +   getch();
 +   exit(1);/* terminate with an error code */
 +   }
 +
 +   midx = getmaxx() / 2;
 +   midy = getmaxy() / 2;
 +
 +   /* get the mode range for this driver */
 +   getmoderange(gdriver, &low, &high);
 +
 +   /* convert mode range info. into strings */
 +   sprintf(mrange, "This driver supports modes %d..%d", low, high);
 +
 +   /* display the information */
 +   settextjustify(CENTER_TEXT, CENTER_TEXT);
 +   outtextxy(midx, midy, mrange);
 +
 +
 +   /* clean up */
 +   getch();
 +   closegraph();
 +   return 0;
 +}
 +</code>
 +
 +
 +==== See also ====
 +[[getgraphmode]]
 +[[getmaxmode]]
 +[[getmodename]]
 +[[initgraph]]
 +[[setgraphmode]]
 +
 +
 +===== output of getmoderange example ===== 
 +
 +    no output of example at the moment
 +    do not hesitate and add it...  
 +
 +
  
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c/graphics.h/getmoderange.txt · Last modified: 2015/05/06 23:06 (external edit)

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