[QT3+XP] transparency and mouse tracking

[incapacitant]

hi

The following code has (at least) 2 problems :

// set background and size it correctly
QWidget *main = new QWidget( this );
( this )->resize( 569, 458 );
setPaletteBackgroundPixmap
  ( QPixmap::fromMimeSource( "images/Exemple_Background.png" ) );
 
// track mouse moves
setMouseTracking ( true );
 
// exit push button
QPushButton * pbClose = new QPushButton ( this );
pbClose->resize( QSize( 10, 10 ) ); 
pbClose->move( 551, 5 );  // position over background
pbClose->setMask( QBitmap() ); // for transparency
 
connect( pbClose, SIGNAL( clicked() ), this, SLOT( close() ) );
connect( pbClose, SIGNAL( QEvent::Enter ), this, SLOT ( changeCursor() ) );
connect( pbClose, SIGNAL( QEvent::Leave ), this, SLOT ( resetCursor() ) );

// set background and size it correctly
QWidget *main = new QWidget( this );
( this )->resize( 569, 458 );
setPaletteBackgroundPixmap
  ( QPixmap::fromMimeSource( "images/Exemple_Background.png" ) );
    
// track mouse moves
setMouseTracking ( true );
    
// exit push button
QPushButton * pbClose = new QPushButton ( this );
pbClose->resize( QSize( 10, 10 ) ); 
pbClose->move( 551, 5 );  // position over background
pbClose->setMask( QBitmap() ); // for transparency

connect( pbClose, SIGNAL( clicked() ), this, SLOT( close() ) );
connect( pbClose, SIGNAL( QEvent::Enter ), this, SLOT ( changeCursor() ) );
connect( pbClose, SIGNAL( QEvent::Leave ), this, SLOT ( resetCursor() ) );

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1. setMouseTracking must be wrongly implemented because it never starts the slots,
2. if i include the line "pbClose->setMask( QBitmap() );" then the control is transparent,
but it never signals the click. (w/o this line I can click but the background in not
visible anymore.

I tried various things but none worked, can you help me ?