get hilihted text ahk

GetSelectedText() {
tmp = %ClipboardAll% ; save clipboard
Clipboard := "" ; clear clipboard
Send, ^c ; simulate Ctrl+C (=selection in clipboard)
ClipWait, 0, 0.25 ; wait until clipboard contains data
selection = %Clipboard% ; save the content of the clipboard
Clipboard = %tmp% ; restore old content of the clipboard
return selection
}