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c:graphics.h:getcolor

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c:graphics.h:getcolor [2015/05/06 23:06] (current)
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 +===== getcolor =====
 +
 +
 +====Syntax of getcolor ==== 
 + <code c>
 +#include <graphics.h>
 +int getcolor(void);
 +  </code>
 +
 +
 +==== Description of getcolor ==== 
 +<code c>
 +getcolor returns the current drawing color. The drawing color is the
 +value to which pixels are set when lines and so on are drawn. For
 +example, in CGAC0 mode, the palette contains four colors: the background
 +color, light green, light red, and yellow. In this mode, if getcolor
 +returns 1, the current drawing color is light green.
 +</code>
 +
 +
 +==== Example of getcolor ====
 +<code c>
 +/* getcolor example */
 +
 +#include <graphics.h>
 +#include <stdlib.h>
 +#include <string.h>
 +#include <stdio.h>
 +#include <conio.h>
 +
 +int main(void)
 +{
 +   /* request autodetection */
 +   int gdriver = DETECT, gmode, errorcode;
 +   int color, midx, midy;
 +   char colname[35];
 +
 +   /* 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;
 +   setcolor(getmaxcolor());
 +
 +   /* for centering text on the display */
 +   settextjustify(CENTER_TEXT, CENTER_TEXT);
 +
 +   /* get the current drawing color */
 +   color = getcolor();
 +
 +   /* convert color value into a string */
 +   itoa(color, colname, 10);
 +   strcat(colname, " is the current drawing color.");
 +
 +
 +   /* display a message */
 +   outtextxy(midx, midy, colname);
 +
 +   /* clean up */
 +   getch();
 +   closegraph();
 +   return 0;
 +}
 +</code>
 +
 +
 +==== See also ====
 +[[getbkcolor]]
 +[[getmaxcolor]]
 +[[getpalette]]
 +[[setcolor]]
 +
 +
 +===== output of getcolor example ===== 
 +
 +    no output of example at the moment
 +    do not hesitate and add it...  
 +
 +
  
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c/graphics.h/getcolor.txt · Last modified: 2015/05/06 23:06 (external edit)

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