cut and paste selected text only

[InterestedNewbie]

How do I cut and paste only the selected text from a dialog edit field? And not all text like in this section of my script (where e3 is the edit field, case 4 and 5 cut-and-paste all text but case 6 is supposed to cut and paste only the text that was selected):

Code:

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str controls = "3"
str e3
;g1
int r=ShowDialog(dd &sub.DlgProc &controls)
;
sel r
,case 4
,if(!empty(e3))
,,paste e3
,case 5
,if(!empty(e3))
,,paste e3
,,e3.all
,,,,key V           ;; Space
,,goto g1
,case 6
,,,,,

,ret