I have two mysql connection on QMainWindow to load

i call a waiting dialog on this way:

Preload *waiter = new Preload(0,tr("Connect to host %1").arg(OneVar["dbhost1"]));
waiter->show();
/// waiter->exce();
qApp->processEvents();

/* Preload( int millisec to self close or 0 null to command close ,texttodisplay); */




if i switsch Preload to QDialog the progess bar running from 0-100 and back
just to mysql is connected .. and
i close preload

waiter->SettoClose(); and QDialog stay open ... infinite ... to wait exce int ....

if i switsch Preload to QWidget is open and close
but the progess bar stay on start and event is not processed by calling qApp->processEvents() why?






Qt Code: 
  1. class Preload : public QWidget
  2. {
  3.      Q_OBJECT
  4. //
  5. public:	 
  6.     Preload( int msec , const QString tex );
  7.     void SettoClose();
  8. protected:	 
  9.     QPixmap display;
  10.     QString textd;
  11.     int timeemust;
  12.     bool selfclose;
  13.     int r_start;
  14.     int r_stop;
  15.     int r_status;
  16.     void paintEvent(QPaintEvent *e);
  17.     ////void resizeEvent( QResizeEvent * );
  18. private:
  19. signals:
  20. public slots:
  21.     void Increment();
  22.  
  23.  
  24. Preload::Preload( int msec , const QString tex )
  25. {
  26.    //////////QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
  27.    display = QPixmap(":/img/about_as_image.png");
  28.   textd = tex;
  29.   if (msec !=0) {
  30.    selfclose = true;
  31.   timeemust = msec;
  32.   } else {
  33.   selfclose = false;
  34.   timeemust = 1200; 
  35.   }
  36.   QRect screenSize = qApp->desktop()->availableGeometry();
  37.     setWindowFlags ( Qt::Popup );
  38.     ///////////qDebug() << "### screenSize -> " << screenSize;
  39.    r_start = 33;
  40.    r_status = r_start;
  41.    r_stop = 469;
  42.   ////////////display = QPixmap("test.png"); 
  43.   QSize actual_result = display.size();
  44.   resize(actual_result);
  45.   qApp->processEvents();
  46.   Increment();
  47.   qApp->processEvents();
  48.  
  49. }
  50.  
  51. void Preload::paintEvent(QPaintEvent *e)
  52. {
  53.     /////qDebug() << "### nullimage -> " << display.isNull();
  54.     QColor textColor = QColor(147,147,147);
  55.     QColor fillrectcolor = Qt::red;
  56.     QColor shapepicture = Qt::white;
  57.     QPainter painter(this);
  58.     painter.setRenderHint(QPainter::Antialiasing, true);
  59.     painter.drawPixmap(0,0,display);
  60.     QPen pen;
  61.     pen.setStyle( Qt::SolidLine );
  62.     pen.setWidth( 3 );
  63.     pen.setColor(fillrectcolor);
  64.     painter.setPen( pen);
  65.     painter.drawLine (QPoint(r_start,96),QPoint(r_status,96));
  66.     pen.setWidth( 2 );
  67.     pen.setColor(textColor);
  68.  
  69.     QFont f( "arial", 12, QFont::Bold );
  70.     painter.setFont( f );
  71.     painter.setPen( pen);
  72.  
  73.     QFontMetrics fm = painter.fontMetrics();
  74.     int largo = fm.width(textd);
  75.     painter.drawText(QPointF((display.width() / 2) - (largo / 2),118),textd);
  76.  
  77.  
  78. }
  79. void Preload::SettoClose()
  80. {
  81.     selfclose = true;
  82.     close();
  83. }
  84.  
  85. void Preload::Increment()
  86. {     
  87.  
  88.             if (r_status > r_stop) {
  89.                 if (selfclose) { 
  90.                 close();
  91.                 return;
  92.                 } else {
  93.                 r_status = r_start;
  94.                 }
  95.             }
  96.  
  97.     int distance = r_stop - r_start;
  98.     int piesesec = timeemust / distance; /* 100% */
  99.     r_status = r_status + 1;
  100.     update();
  101.     QTimer::singleShot(piesesec, this, SLOT(Increment()));  
  102.     qApp->processEvents();
  103. }
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