Returns the selected text in a display-pane.
capi
display-pane-selected-text display-pane => result
|   display-pane⇩  |    
An instance of display-pane or a subclass.  | 
|   result  |    
A string or  nil. | 
The function display-pane-selected-text returns the selected text in display-pane, or nil if there is no selection.
CAPI User Guide and Reference Manual (Windows version) - 18 Feb 2025 15:35:34