• 
  我们先定义一个线程类类：textTread
  
  texttread.h
  
  

  view source#define TEXTTREAD_H 

• 04.#include <<a href="http://blog.51cto.com/user_index.php?action=addblog_new" target="_blank" class="keylink">QT</a>hread>

  05. 

  06.class textTread : public <a href=http://www.mamicode.com/"http://blog.51cto.com/user_index.php?action=addblog_new" target="_blank" class="keylink">QT</a>hread

  07.{

  08.Q_OBJECT

  09.public:

  10.textTread();

  11.void run();

  12.signals:

  13.void sendGUIThreadData(QString str);  //向主线程通信的信号

  14.public slots:

  15.void GetGUIThreadID(int mThreadID);  //接受主线程通讯过来数据的槽

  16.private:

  17.int ThreadID;

  18.};

  19. 

  20.#endif // TEXTTREAD_H

  
  再来看 texttread.cpp
  
  

  view sourceprint?

  01.#include "texttread.h"

  02.#include <qDebug>

  03.textTread::textTread()

  04.{

  05.}

  06.void textTread::run()

  07.{

  08.qDebug() << tr("Thread is Open,ThreadID : %1").arg(ThreadID);

  09.//You can do anything in here   嗨嗨拽两句鸟文

  10.}

  11.void textTread::GetGUIThreadID(int mThreadID)  //接受主线程通讯过来的数据

  12.{

  13.ThreadID = mThreadID;

  14.}

  
  再看在GUI主线程实现50个线程的代码：
  
  

  view sourceprint?

  01.const int LENGTH = 50;

  02. 

  03.textTread *tread;

  04.tread = new textTread[LENGTH];

  05.for(int i=0;i<=LENGTH-1;i++){

  06.connect(this,SIGNAL(SendGUIThreadID(int)),&tread[i],SLOT(GetGUIThreadID(int)));

  07.connect(&tread[i],SIGNAL(sendGUIThreadData(QString)),this,SLOT(GetGUIThreadData(QString)));

  08.emit SendGUIThreadID(i);

  09.tread[i].start();

  10.}

  
  

  声明类的指针数组。

  然后循环绑定信号与槽，最后循环用Start()运行线程，注意此处new 出的类数组，后面用的是.而不是-> 。

QT多线程类数组同时开启几十个线程