Hi I have a question.

In the code, textEdit is a pointer of a class that inherits from QTextEdit class, and is owned by the main window, tree is a pointer of a Tree class I created, and is owned by a dialog.

Qt Code: 
  1. void Thread::run()
  2. {
  3.     assert(textEdit != 0);
  4.     assert(tree != 0);
  5.  
  6.     QTextDocument *document = textEdit->document();
  7.     QTextCursor cursor(document);
  8.  
  9.     cursor.movePosition(QTextCursor::Start);
  10.  
  11.     while (true)
  12.     {
  13.         if (!cursor.movePosition(QTextCursor::NextWord, QTextCursor::KeepAnchor))
  14.             break;
  15.  
  16.         if (cursor.hasSelection())
  17.         {
  18.             QString word = cursor.selectedText();
  19.             tree->insert(word); // *tree is going to be modified.
  20.         }
  21.         cursor.setPosition(cursor.selectionEnd());
  22.     }
  23. }
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When I open the dialog, I want the thread to start.

But I'm getting this error.

ASSERT: "qApp && qApp->thread() == QThread::currentThread"

Is this because I'm not using lockers or mutexs? How should I use them?.

Also, I want to receive a signal when run has finished.
Should I use terminated signal, finished signal or create my own signal?

Thanks