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c:graphics.h:graphdefaults [2015/05/06 23:06] (current)
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 +===== graphdefaults =====
 +
 +
 +====Syntax of graphdefaults ==== 
 + <code c>
 +#include <graphics.h>
 +void graphdefaults(void);
 +  </code>
 +
 +
 +==== Description of graphdefaults ==== 
 +<code c>
 +graphdefaults resets all graphics settings to their defaults:
 +    * sets the viewport to the entire screen.
 +    * moves the current position to (0,0).
 +    * sets the default palette colors, background color, and drawing
 +color.
 +    * sets the default fill style and pattern.
 +    * sets the default text font and justification.
 +</code>
 +
 +
 +==== Example of graphdefaults ====
 +<code c>
 +/* graphdefaults example */
 +
 +#include <graphics.h>
 +#include <stdlib.h>
 +#include <stdio.h>
 +#include <conio.h>
 +
 +int main(void)
 +{
 +   /* request autodetection */
 +   int gdriver = DETECT, gmode, errorcode;
 +   int maxx, maxy;
 +
 +   /* 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 */
 +   }
 +
 +   maxx = getmaxx();
 +   maxy = getmaxy();
 +
 +   /* output line with nondefault settings */
 +   setlinestyle(DOTTED_LINE, 0, 3);
 +   line(0, 0, maxx, maxy);
 +   outtextxy(maxx/2, maxy/3, "Before default values are restored.");
 +   getch();
 +
 +   /* restore default values for everything */
 +   graphdefaults();
 +
 +   /* clear the screen */
 +   cleardevice();
 +
 +
 +
 +   /* output line with default settings */
 +   line(0, 0, maxx, maxy);
 +   outtextxy(maxx/2, maxy/3, "After restoring default values.");
 +
 +   /* clean up */
 +   getch();
 +   closegraph();
 +   return 0;
 +}
 +</code>
 +
 +
 +==== See also ====
 +[[initgraph]]
 +[[setgraphmode]]
 +
 +
 +===== output of graphdefaults example ===== 
 +
 +    no output of example at the moment
 +    do not hesitate and add it...  
 +
 +
  
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c/graphics.h/graphdefaults.txt · Last modified: 2015/05/06 23:06 (external edit)

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