Is it possible to select multiple options in a tree box by mouse dragging like listbox?

[#1]

In the tree box, when the Multiselect setting is set to 1, it allows multiple selections of options in the tree box (as shown in the JSL Script). However, unlike the list box, in this case, multiple selections are made while holding down the Ctrl key. Is there a way to select multiple items like in a list box, not only by holding the Ctrl key but also by dragging the left mouse button to select multiple items?

root1 = Tree Node( "Parent 1" );
root2 = Tree Node( "Parent 2" );

c1 = Tree Node( "Child 1" );
c2 = Tree Node( "Child 2" );
c3 = Tree Node( "Child 11" );
c4 = Tree Node( "Child 4" );
root1 << Append( c1 );
root1 << Append( c2 );
root1 << Append( c3 );
root1 << Append( c4 );
nw = New Window( "TreeBox",
	tree = Tree Box( {root1, root2}, Size( 300, 200 ), Multiselect( 1 ) ),
	List Box( {c1, c2, c3, c4} ),
	tree << Make Visible( C3 ),

);

[#2]

Instead of using Ctrl, would using shift be enough as it will select items between the selections?