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ScreenCols

Syntax

 
#include <pc.h>

int ScreenCols(void);

Description

This function returns the number of columns of the screen. It does so by looking at the byte at the absolute address 40:4Ah in the BIOS area. In text modes, the meaning of number of columns is obvious; in graphics modes, this value is the number of columns of text available when using the video BIOS functions to write text.

Return Value

The number of columns.

Portability

ANSI/ISO C No
POSIX No

Example

 
int available_columns = ScreenCols();


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  Copyright 2004   by DJ Delorie     Updated Apr 2004