I tried changing the control to "
ListView":
mdx SetControlMDX $dname 1 ListView noscroll > $mircdir $+ mdx\views.mdx
And I started getting an echo response from a left mouse click "
sclick", and also this answer i get from right mouse button.
I flipped through the reference book for
MDX and perhaps in order for the left mouse button to become active in "
TreeView" control, you need to create some lines with text and control elements, so that this field is not empty.
slclick = The user has selected an item. That is, according to the guide, this should work as soon as some element is selected. Maybe this will solve your problem in code.