Dialog Qt::NonModal 0 0 382 335 Sum Line Length In Polygons true Input polygon vector layer Input line vector layer Output summed length field name LENGTH 10 Qt::Vertical 20 21 Output Shapefile true Browse Add result to canvas 24 Qt::AlignCenter true Qt::Horizontal QDialogButtonBox::Close|QDialogButtonBox::Ok buttonBox_2 progressBar addToCanvasCheck buttonBox_2 accepted() Dialog accept() 133 512 215 290 buttonBox_2 rejected() Dialog close() 59 512 132 239