<?xml version="1.0" encoding="utf-8" standalone="yes"?> <panel name="panel_im_control_panel"> <layout_stack name="vertical_stack"> <layout_panel name="call_btn_panel"> <button label="Anrufen" name="call_btn"/> </layout_panel> <layout_panel name="end_call_btn_panel"> <button label="Anruf beenden" name="end_call_btn"/> </layout_panel> <layout_panel name="voice_ctrls_btn_panel"> <button label="Voice-Steuerung" name="voice_ctrls_btn"/> </layout_panel> </layout_stack> </panel>