TThread::WaitFor - C++ Builder

C++ Builder 参考手册 ➙ System::Classes ➙ TThread ➙ WaitFor

头文件：#include <System.Classes.hpp>
命名空间：System::Classes
类：TThread
访问权限：public:
函数原型：

unsigned __fastcall WaitFor(void);

WaitFor 是 System::Classes::TThread 的成员函数，等待线程结束。

参数：

无。

返回值：

线程结束时 ReturnValue 属性的值。

例子：

class TTestThread : public System::Classes::TThread
{
private:
    void __fastcall SetLabelValue(void)
    {
        Form1->Label1->Caption = StrToIntDef(Form1->Label1->Caption,0) + 1;
    }
protected:
    void __fastcall Execute(void)
    {
        while(!Terminated)
        {
            Synchronize(SetLabelValue);
            Sleep(200);
        }
    }
};

TTestThread *lpTestThread = NULL;

//---------------------------------------------------------------------------
void __fastcall TForm1::Button1Click(TObject *Sender)
{
    if(!lpTestThread)
    {
        lpTestThread = new TTestThread;
    }
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button2Click(TObject *Sender)
{
    if(lpTestThread)
    {
        lpTestThread->Terminate();
        lpTestThread->WaitFor();
        delete lpTestThread;
        lpTestThread = NULL;
    }
}

相关：

• System::Classes::TThread::ReturnValue
• System::Classes::TThread::Terminate
• System::Classes::TThread::Terminated
• System::Classes::TThread::TerminatedSet
• System::Classes::TThread::FreeOnTerminate
• System::Classes::TThread::Finished
• System::Classes::TThread::Started
• System::Classes::TThread::Execute
• System::Classes::TThread::WaitFor
• System::Classes::TThread
• System::TObject
• VCL 类继承关系

C++ Builder 参考手册 ➙ System::Classes ➙ TThread ➙ WaitFor