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c:graphics.h:getmaxcolor

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c:graphics.h:getmaxcolor [2015/05/06 23:06] (current)
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 +===== getmaxcolor =====
 +
 +
 +====Syntax of getmaxcolor ==== 
 + <code c>
 +#include <graphics.h>
 +int getmaxcolor(void);
 +  </code>
 +
 +
 +==== Description of getmaxcolor ==== 
 +<code c>
 +getmaxcolor returns the highest valid color value for the current
 +graphics driver and mode that can be passed to setcolor.
 +For example, on a 256K EGA, getmaxcolor always returns 15, which means
 +that any call to setcolor with a value from 0 to 15 is valid. On a CGA in
 +high-resolution mode or on a Hercules monochrome adapter, getmaxcolor
 +returns a value of 1.
 +  Windows Notes 
 +The winbgim version of getmaxcolor returns 15 for the maximum color.
 +However, in addition to the usual BGI colors (0 through 15), the
 +programmer may also use RGB_colors.
 +</code>
 +
 +
 +==== Example of getmaxcolor ====
 +<code c>
 +/* getmaxcolor 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;
 +   char colstr[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;
 +
 +   /* grab the color info. and convert it to a string */
 +   sprintf(colstr, "This mode supports colors 0..%d", getmaxcolor());
 +
 +   /* display the information */
 +   settextjustify(CENTER_TEXT, CENTER_TEXT);
 +   outtextxy(midx, midy, colstr);
 +
 +   /* clean up */
 +   getch();
 +   closegraph();
 +
 +   return 0;
 +}
 +</code>
 +
 +
 +==== See also ====
 +[[getbkcolor]]
 +[[getcolor]]
 +[[getpalette]]
 +[[getpalettesize]]
 +[[setcolor]]
 +
 +
 +===== output of getmaxcolor example ===== 
 +
 +    no output of example at the moment
 +    do not hesitate and add it...  
 +
 +
  
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c/graphics.h/getmaxcolor.txt · Last modified: 2015/05/06 23:06 (external edit)

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