c++ question: no matching function call

[jeff <jeff hype52 com>]

hi all, i have something like this

abc.h:
class abc {
public:
        abc (GtkWidget *mywidget);
        // destructor etc
        somefunction (char *something);
}

abc.cc
#include "abc.h"
// constructor destructor etc etc
abc::somefunction (char *something)
{
//stuff
}

main.cc
#include "abc.h"
//... then in a function or somethin
abc *mystuff = new abc;
mystuff->somefunction("sometext");
delete mystuff;

and i get:

main.cc:73: no matching function for call to `abc::somefunction (char *&)'

note the function names and what not have been changed to protect the innocent...err just typed this up from 
my head just to show the relevant parts...

thx
-j