The only way I can think of doing this is the place the textfield/textarea inside a smaller panel to hide the borders:
win=CreateWindow("borderless textfield/textarea",100,100,240,260,0,1) tfpanel=CreatePanel(10,10,80,18,win) tf=CreateTextField(-2,-2,84,22,tfpanel) tapanel=CreatePanel(30,60,120,100,win) ta=CreateTextArea(-3,-2,124,104,tapanel) Repeat Until WaitEvent()=$803 End