getsyx Subroutine
Purpose
Retrieves the current coordinates of the virtual screen cursor.
Library
Curses Library (libcurses.a)
Syntax
Description
The getsyx subroutine retrieves the current coordinates of the virtual screen cursor and stores them in the location specified by Y and X. The current coordinates are those where the cursor was placed after the last call to the wnoutrefresh, pnoutrefresh, or wrefresh, subroutine. If the leaveok subroutine was TRUE for the last window refreshed, then the getsyx subroutine returns -1 for both X and Y.
If lines have been removed from the top of the screen using the ripoffline subroutine, Y and X include these lines. Y and X should only be used as arguments for the setsyx subroutine.
The getsyx subroutine, along with the setsyx subroutine, is meant to be used by a user-defined function that manipulates curses windows but wants the position of the cursor to remain the same. Such a function would do the following:
- Call the getsyx subroutine to obtain the current virtual cursor coordinates.
- Continue manipulating the windows.
- Call the wnoutrefresh subroutine on each window manipulated.
- Reset the current virtual cursor coordinates to the original values with the setsyx subroutine.
- Refresh the display with a call to the doupdate subroutine.
Parameters
| Item | Description |
|---|---|
| X | Points to the current row position of the virtual screen cursor. A value of -1 indicates the leaveok subroutine was TRUE for the last window refreshed. |
| Y | Points to the current column position of the virtual screen cursor. A value of -1 indicates the leaveok subroutine was TRUE for the last window refreshed. |