#include <TApplication.h>
#include <iostream>
#include <TString.h>
#include <TThread.h>
#include <TObject.h>
#include <TGFrame.h>
#include <TGLabel.h>
#include <TGWindow.h>
#include <TQObject.h>
#include <TGClient.h>

#include <TEnv.h>
#include <TSystem.h>

using namespace std;

class MyClass : public TGMainFrame
{
public:
	MyClass();
	virtual ~MyClass();
	void ChangeLabelText();

private:
	static void* ThreadHandle(void *arg);
	void InitWindow();
	TThread *myThread;
	TGLabel *fLabel;
	bool fChanged;
};

MyClass::MyClass() : TGMainFrame(gClient->GetRoot(), 400, 400),fChanged(false)
{   
	InitWindow(); //this creates different frames, labels etc.
	cout<<"Initialized"<<endl;
	myThread = new TThread("myThread",MyClass::ThreadHandle,(void*)this);
	cout<<"Thread created"<<endl;
	myThread->Run();
	cout<<"thread running"<<endl;
}

MyClass::~MyClass()
{
}

void* MyClass::ThreadHandle(void *arg)
{
	cout<<"Thread handle"<<endl;
	MyClass *classInstance = static_cast<MyClass*>(arg);

	while(1)
	{
		classInstance->ChangeLabelText();
		sleep(5);
	}
	return nullptr;
}

void MyClass::ChangeLabelText()
{
	if(!fChanged)
	{
		cout<<"1"<<endl;
		fLabel->SetText("new text");
		fChanged=true;
	}
	else
	{
		cout<<"2"<<endl;
		fLabel->SetText("old text");
		fChanged=false;
	}
}

void MyClass::InitWindow()
{
	SetCleanup(kDeepCleanup);
	fLabel = new TGLabel(this,"Text 1");
	AddFrame(fLabel,new TGLayoutHints(kLHintsExpandX | kLHintsExpandY));
	SetWindowName("Main Window");
	MapSubwindows();
	Resize(100,100);
	MapWindow();
}

int main(int argc,char **argv)
{
	TApplication app("Application", &argc, argv);
	MyClass *mainWindow = new MyClass();
	app.Run(kTRUE);
	
	if(mainWindow) delete mainWindow;mainWindow=0;
	
	return 0;
}