title: Qt Tooltip how to prevent the text from disappearing after the builtin delay?
body: <p>I have a <code>QGraphicsScene</code> and inside I have a few <code>QGraphicsItem</code>s. When I hover over a <code>QGraphicsRectItem</code>, I want to show an overlay text immediately. Only when the cursor leaves the item, then the text can disappear.</p>
  
  <p>Below you can see I tried using whatsthis (which crashes python) and tooltip. </p>
  
  <p>With tooltip, I am able to make the text appear immediately but the text disappears on its own after the built-in delay.</p>
  
  <pre><code>class Node(QGraphicsRectItem):
      def __init__(self, x, y, w, h, qpen, qbrush, text):
          QGraphicsRectItem.__init__(self)
  
          self.setRect(x, y, w, h)
          self.setBrush(qbrush)
          self.setPen(qpen)
  
          self.setAcceptHoverEvents(True)
          self.text = text
  
          #self.setFlag(QGraphicsItem.ItemIsMovable)
          #self.toolkit = QToolTip()
          #self.setToolTip(text)
          #self.setWhatsThis(self.text)
  
      def hoverEnterEvent(self, event):
          QToolTip.showText(event.screenPos(),self.text)
  
          #print("hoverEnterEvent : {}".format(event))
          #print(type(self.toolTip))
          #self.QToolTip.showText(event.pos(),text)
          #event.ToolTip.showText(text)
  
          #QWhatsThis.showText(event.screenPos(),self.text)
          #self.enterWhatsThisMode()
  
      def hoverLeaveEvent(self, event):
          QToolTip.hideText()
  
          #print("hoverLeaveEvent : {}".format(event))
          #self.QToolTip.hideText()
          #event.ToolTip.hideText()
  
          #QWhatsThis.hideText()
          #self.leaveWhatsThisMode()
  </code></pre>
  
  <p>I am using python 3.3 and pyside</p>