This is probably how I would do it, though I don't know if it's the best way:
Strict Local window:TGadget Local combobox:TGadget Local textfield:TGadget Local button:TGadget window=CreateWindow("My Window",30,20,200,200) combobox=CreateComboBox(4,4,120,22,window) AddGadgetItem combobox,"Short" AddGadgetItem combobox,"Medium" AddGadgetItem combobox,"Fat",True AddGadgetItem combobox,"Humungous" textfield=CreateTextField(4,40,100,24,window) button=CreateButton("Button",4,70,100,24,window) While WaitEvent() Select EventID() Case EVENT_GADGETACTION If EventSource() = button Local i For i=1 To CountGadgetItems(combobox) If GadgetItemText(combobox,i-1) = GadgetText(textfield) SelectGadgetItem(combobox,i-1) Next EndIf Case EVENT_WINDOWCLOSE End End Select Wend