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();