[Closed] A bunch of MAXScript questions

Hi guys, during the development of IllusionCatalyst I came up with some questions I couldn’t answer neither digging the comprehensive MAXScript Reference, nor querying the web. Some features I have in mind for future versions depend on possibilities given by the language. Some questions could sound a bit trivial, don’t be disappointed, it’s for personal curiosity too. Before asking here I tried out everything I could figure (working in 3ds Max 9).

          1 - Is it possible to detect the status of "Selection Lock Toggle" and "Show End Result on/off Toggle" checkbuttons? Is there a way to catch their change as event?
          
        
          2 - Is it possible to catch the editable poly "Ignore Backfacing" checkbox change as event?
          
        
          3 - Is it possible to manage the editable poly vertex/edge color via script like in soft selection? I mean assigning colors to vertices/edges depending on parameters set by script like array of values, multipliers, and so on.
          
        
          4 - Is it possible to End Paint Session of thePainterInterface by right clicking like the standard 3ds Max behavior?
          
        
          5 - Why does casting a Point3 to Point2 throws an error? According to MAXScript Reference this should give a Point2 type by cutting the .z or [3] value.

        [1,1,1] as Point2
        -- Unable to convert: [1,1,1] to type: Point2
        
        local p3vector = [1,1,1]
        local p2vector = p3vector as Point2
        -- Unable to convert: [1,1,1] to type: Point2
        

          6 - The following (useless) script draws a line in screen space based on the gw methods. The issue is that it flickers a little while redrawing, in example during viewport rotation, not too much but quite annoying. I do not have problems with Max built in features like visualizing poly count, which I guess is based upon the same library. Is there anything wrong?

6b - Am I obliged to use an intermediate function (regDrawLine) to pass parameters to the drawing function (drawLine)?

      function drawLine sTextHead sTextTail =
      (
      	gw.setTransform(Matrix3 1)
      
      	local p3Head = gw.wtransPoint [50, -50, 25]
      	local p3Tail = gw.wtransPoint [-50, 50, 25]
      
      	gw.wMarker [p3Head.x, p3Head.y, 0] #hollowBox color:white
      	gw.wMarker [p3Tail.x, p3Tail.y, 0] #hollowBox color:white
      
      	gw.wText [p3Head.x+10, p3Head.y+2, 0] sTextHead color:white
      	gw.wText [p3Tail.x+10, p3Tail.y+2, 0] sTextTail color:white
      
      	gw.wPolyline #([p3Tail.x, p3Tail.y, 0], [p3Head.x, p3Head.y, 0]) false rgb:#(white, white)
      
      	gw.enlargeUpdateRect #whole
      	gw.updateScreen()
      )
      
      function regDrawLine =
      (
      	drawLine "Head" "Tail"
      )
      
      registerRedrawViewsCallback(regDrawLine)
      completeRedraw()
       

[further questions]

7 – Is it possible to get access to the arrow with plus sign “Add to current selection” and the arrow with minus sign “Remove from current selection” mouse cursors?

8 – Is it possible to manage cursor visibility? In example, in painting mode it would be nice to hide the arrow and see the advanced brush cursor only.

Thank you very much.