Header File 

conio.h  

Category 

Console I/O Routines 

Prototype 

void textattr(int newattr); 

Description 

Sets text attributes.

This function does not affect any characters currently onscreen; it affects only those characters displayed by functions (such as cprintf) performing text mode, direct video output after this function is called. 

The color information is encoded in the newattr parameter as follows: 

In this 8-bit newattr parameter:

• bits 0-3 contain the 4-bit foreground color (0 to 15).
• bits 4-6 contain the 3-bit background color (0 to 7).
• bit 8 is the blink-enable bit.

• If you use the symbolic color constants defined in conio.h for creating text attributes with textattr, note the following limitations on the color you select for the background:
• You can select only one of the first eight colors for the background.
• You must shift the selected background color left by 4 bits to move it into the correct bit positions.

Return Value 

None. 

Example  

#include <conio.h>
int main(void)
{
   int i;
   clrscr();
   for (i=0; i<9; i++)
   {
       textattr(i + ((i+1) << 4));
       cprintf("This is a test\r\n");
   }
   return 0;
}

Portability