hi friends,
i am having a window with size (10,800,1010,40) .. its having a button (diagnosButton) ... a thread is running parallel which will receive communication from server and emit a signal newMessage (QString) ... in my mainwindow i get the signal of thread and called a slot ()
this is the slot
Qt Code: 
  1. void TidBar::showToolTip(const QString &message)
  2. {
  3.   QFont serifFont("Times", 12, QFont::Bold);
  4.         QPalette color;
  5.         int setval = 0;
  6.         color.setColor( QPalette::Inactive,QPalette::QPalette::ToolTipBase,Qt::yellow);
  7.         //value = diagnosButton->mapToGlobal(diagnosButton->rect().topLeft());
  8.         value = diagnosButton->mapToGlobal(QPoint(0, 0));
  9.          qreal x = value.x();
  10.          qreal y = value.y();
  11.         QRect rectval = this->rect();
  12.         QPoint value2 (x + 70, y - 54);
  13.  
  14.                 QToolTip::setPalette(color);
  15.                 QToolTip::setFont(serifFont);
  16.                 QToolTip::showText(value2, message,this ,rectval );
  17.  
  18.      }
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i try to show a tooltip with the message from the thread signal newMessage(QString) .... i thought this tooltip will last for long until i move the cursor outside the window ...
but the tooltip disapper or hide afer few seconds .... i dont know where i mistaked .... please help