QThread and method with pointer argument

Hello, my problem is:
for example i have a class

Code:

---

class FooClass{
public:
FooClass();
~FooClass();
 
private:
QTextEdit* text;
};
FooClass::FooClass(){
text = new QTextEdit;
}

---

and now i want to make thread where i can put something in my FooClass::text fild

Code:

---

class FooThread : public QThread{
public:
void setTextEdit(QTextEdit* __p);
 
protected:
void run()
 
private:
QTextEdirt* textPointer;
};
void FooThread::setTextEdit(QTextEdit* __p){
this->textPointer = __p
}
 
void FooThread::run(){
this->textPointer->insertPlainText("Hello from QThred");
}

---

my aim is to enter ""Hello from QThred" string into FooClass TextEdit

Code:

---

FooClass::FooClass(){
text = new QTextEdit;
FooThread *thread = new FooThread;
thread->setTextEdit(this->text);
thread->start();
}

---

but when i do it like this i get runtime error :/

You can't access widgets from within worker threads. Use signals instead to communicate with the main thread and change the contents of the text edit from within there.

Emit a signal in the thread`s run() maybe with some QString argument (the text which you want) and catch the signal with a proprietary slot in the main thread which has the same QString argument to get the text and change the text of the widget in that slot.