返回当前背景颜色

[c]代码库

#include <graphics.h> 
#include <stdlib.h> 
#include <string.h> 
#include <stdio.h> 
#include <conio.h> 

int main(void) 
{ 
   /* request auto detection */ 
   int gdriver = DETECT, gmode, errorcode; 
   int bkcolor, midx, midy; 
   char bkname[35]; 

/* initialize graphics and local variables */ 
   initgraph(&gdriver, &gmode, ""); 

/* read result of initialization */ 
   errorcode = graphresult(); 
/* an error occurred */ 
   if (errorcode != grOk) 
   { 
      printf("Graphics error: %s\n", 
             grapherrormsg(errorcode)); 
      printf("Press any key to halt:"); 
      getch(); 
/* terminate with an error code */ 
      exit(1); 
   } 

   midx = getmaxx() / 2; 
   midy = getmaxy() / 2; 
   setcolor(getmaxcolor()); 

/* for centering text on the display */ 
   settextjustify(CENTER_TEXT, CENTER_TEXT); 

/* get the current background color */ 
   bkcolor = getbkcolor(); 

/* convert color value into a string */ 
   itoa(bkcolor, bkname, 10); 
   strcat(bkname, 
 " is the current background color."); 

/* display a message */ 
   outtextxy(midx, midy, bkname); 

/* clean up */ 
   getch(); 
   closegraph(); 
   return 0; 
}