how to return the poition in the input string where the token is found

[Maansi Gupta]

Hi,
>
>We are trying to develop a friendly IDE for our own
>grammer. For this purpose we have created a Lexer
>which is taking input from a string buffer.
>
>The user enters the script in a rich edit control.
The
>lexer is called after each character.
>
>Once a token is recognized we need to call a function
>in the action part of the lexer, that would return
the
>position of the character in the string.
>
>For example if input string is "x+y". Where "+" is
the
>token to be identified, the function needs to pass
the
>position of "+" in the string i.e. 2.
>
>I am unable to find any means to return this
>position.Please help regarding this
>
>Thanks


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