The getcursorposition() function returns the position of the caret in the textbox, i.e. the characters before the caret position, it does not return the column or row numbers.

I think, this can be handled in the client itself using a function such as:
def getcood(text, cursorpos):
    row = 1
    col = 1
    pos = 0
    for char in text:
        if pos > cursorpos:
            break
        if char == '\n':
            row += 1
            col = 1
        elif char == '\t':
            col = ((col/8)+1)*8
        col += 1
        pos += 1
    return row, col

This will work in gedit for both word wrapping on and off (as reported by the status bar although text might appear on the next line)

*** Bug 350910 has been marked as a duplicate of this bug. ***

Alex: The suggestion from Prashanth worked for you ?

Closing this bug report as no further information has been provided. Please feel free to reopen this bug if you can provide the information asked for.
Thanks!