i want to control system volume by using qslider i write some code but some problem with build
Qt Code:
void dcsinter::volume() { ui->horizontalSlider->setMinimum(0); ui->horizontalSlider->setMaximum(100); ui->horizontalSlider->setSingleStep(5); int pos = ui->horizontalSlider->sliderPosition(); qreal apos = pos/100; Phonon::AudioOutput *audio; audio.setVolume(apos); }To copy to clipboard, switch view to plain text mode
build issues are
'undefined reference to `_imp___ZN6Phonon11AudioOutput9setVolumeEd'
'undefined reference to `_imp___ZNK6Phonon11AudioOutput6volumeEv'
'collect2: ld returned 1 exit status'
i can't understand what the issue here
thanks
Bookmarks