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System / Smth wrong with getting parameter in function for sf::Thread

« on: November 11, 2012, 11:43:11 am »

I'm trying to get char * made in such way:

#include <string>
#include <cstring>
...
void smthInThread(void *UserData){
//some everlasting loop from which the thread "threadEval" will call
while(true){
  //getting std::string str from console
  std::string str;
  std::getline(std::cin, str);

  //getting cstring cstr from str
  char * cstr;
  cstr = new char [str.size()+1];
  strcpy(cstr,str.c_str());

  //passing cstr into evalInThread where problem is
  sf::Thread threadEval(&evalInThread, &cstr);
  threadEval.Launch();
}
}

//!function where problem is:
void evalInThread(void *UserData){
  //That's in tutorial:
  // Cast the parameter back to its real type
  //  MyClass* Object = static_cast<MyClass*>(UserData);

  //That's what I'm doing:
  char * evalString = static_cast<char *>(UserData);
  std::cout << evalString; //!! This return wrong string !!
}
 

The problem is that I can not cast the parameter of char * back to its real type, although I do all as in tutorial written
What I'm doing wrong?
Or, maybe, there's another way to get parameter of such type inside threaded function?

btw: I am using SFML ver 1.6 'cause I need stable version