Return char* From DLL

Hi All,

 I am facing a problem can anyone help.

I have a function in DLL
void getString(char *string)
{
   strcpy(string, "My String);
  printf("In Dll %s", string);
}

I am calling this function in my win32 consol app

char mystr[50];
strcpy(mystr, "Test");
getString(myStr);
printf("in main %s", mystr);

The result I am getting is:
In Dll My String
In Main Test

Why DLL is unable to retutn value?  If I use this function in main it
is working fine.  DLL not working.
Can anyone please explain?
Thanks
Trupti