c++ string 转 wstring,mutex 锁

#include <mutex>
mutex CS; //全局零界值
//任务测试
class MyTestTask:public WorkItem{
    string name;
public:
  //需方法实现
  void run(){

    CS.lock() ;
    std::wstring ss;

    //string to wstring
    ss.assign(name.begin(),name.end());
    ss = L"任务" + ss;

    Form1->Memo1->Lines->Add(ss.data());
    CS.unlock() ;

  }
public:
  MyTestTask(const string& name) {
      this->name = name;

  }
};