- connect( ui.playButton, SLOT( clicked() ), this, SLOT( play() ) );
- connect( ui.stopButton, SLOT( clicked() ), this, SLOT( stop() ) );
- connect( ui.nextButton, SLOT( clicked() ), this, SLOT( next() ) );
- connect( ui.prevButton, SLOT( clicked() ), this, SLOT( prev() ) );
+ connect( ui.playButton, SIGNAL( clicked() ), this, SLOT( play() ) );
+ connect( ui.stopButton, SIGNAL( clicked() ), this, SLOT( stop() ) );
+ connect( ui.nextButton, SIGNAL( clicked() ), this, SLOT( next() ) );
+ connect( ui.prevButton, SIGNAL( clicked() ), this, SLOT( prev() ) );