curs_getcchar - Linux
Overview
curs_getcchar retrieves the character under a given cursor position in the terminal. It’s commonly used in terminal manipulation and text editing applications to access and modify characters at specific locations within the terminal screen.
Syntax
curs_getcchar(int x, int y)
Options/Flags
| Flag | Description |
|—|—|
| x
| Horizontal cursor position (0-based). |
| y
| Vertical cursor position (0-based). |
Examples
- Get the character under the cursor at position
(10, 5)
:
char c = curs_getcchar(10, 5);
- Replace the character at position
(0, 0)
with ‘X’:
curs_getcchar(0, 0) = 'X';
Common Issues
- Out of bounds: If the given cursor position is outside the terminal screen, the behavior is undefined. Ensure that the
x
andy
coordinates are within the terminal window dimensions. - Read-only terminal: Some terminals may prevent character modification. In this case,
curs_getcchar
will not be able to change the character at the specified position.
Integration
curs_getcchar is often used in conjunction with other terminal manipulation functions like curs_setpos
and curs_move
. It allows for precise character manipulation and cursor positioning within terminal-based applications.
Related Commands
- tput: A command-line utility that can be used to control terminal behavior, including cursor positioning and character manipulation.
- terminfo: A database that contains information about different types of terminals, including cursor movement and character attribute capabilities.