Dialog Qt::WindowModal 0 0 355 285 Random Selection From Within Subsets true Input Vector Layer Input subset field (unique ID field) Randomly Select Number of Features true Qt::Horizontal 40 20 1 Percentage of Features Qt::Horizontal 40 20 % 1 100 50 Qt::Vertical 20 20 24 Qt::AlignCenter true Qt::Horizontal QDialogButtonBox::Close|QDialogButtonBox::Ok buttonBox_2 accepted() Dialog accept() 133 273 215 290 buttonBox_2 rejected() Dialog close() 59 273 132 239