Hi,

We all know that ( in VB.net, for example) a TreeView control is very useful tool of representing nested data. For example, a file system is a good example of nested data structure in which folder name is a "node" and file name can be attached to each node.

However, in the current TreeView control in VB.net , the tree can "expand" and "collapse" its branch only in vertical direction. I am just wondering if there is such thing as 2-D equivalent of TreeView where "expand" and "collapse" can be done in two dimensional manner ( vertically as well as horizontally ).
An application of such "2d TreeView" is, for example, a mathematical expression.

I have a very complicated mathematical expression. The expression is composed of "nodes" which are connected by "+" and "-" operator. each "node" can contains other "sub nodes", each of which is connected by "*" and "/" operator.

Down one level, the "node" at some level can be a function call, where the function argument itself can be another level of complicated expression, etc.

Is there any tool that allow me to "expand" and "Collapse" PART of the expression. That will give me a much clear view of the overall expression.

For example, one of the root of the quadratic equation (a x^2 + b x + c = ) can be written as

---------------
-b + / b^2 - 4 a c ----
x = --------------------- ( where / represent squart root )
2a

This is in the "expanded" form.

If I can "collapse" it into

-b + D -------------
x = --------- by noting D = / b^2 - 4 a c
2a

Then the expression will be much more concise.

I want a tool to allow me to "expand" and "collapse" at will.

Please refer me to any information you think it is related.

Thank you.

Larry Chen

lchen...@gmail.com wrote:

> This is in the "expanded" form. If I can "collapse" it into
> -b + D -------------
> x = --------- by noting D = / b^2 - 4 a c
> 2a
> Then the expression will be much more concise.

you seems retarded. Are you going to use "treeView control", Visual
Basic, ascii or unicode to accomplish that?? You don't know what you are
asking.

On Saturday, September 18, 2021 at 12:51:28 PM UTC-4, Forest Beech wrote:
> lchen...@gmail.com wrote:
>
> > This is in the "expanded" form. If I can "collapse" it into
> > -b + D -------------
> > x = --------- by noting D = / b^2 - 4 a c
> > 2a
> > Then the expression will be much more concise.
> you seems retarded. Are you going to use "treeView control", Visual
> Basic, ascii or unicode to accomplish that?? You don't know what you are
> asking.

Did I mention anything about ASCII or Unicode ? Using Window Form Application (GUI) in VB.net is absolutely possible.
You don't understand my question and therefore your don't know what you are answering !

lchen...@gmail.com wrote:

>> > This is in the "expanded" form. If I can "collapse" it into -b + D
>> > -------------
>> > x = --------- by noting D = / b^2 - 4 a c 2a Then the expression will
>> > be much more concise.
>> you seems retarded. Are you going to use "treeView control", Visual
>> Basic, ascii or unicode to accomplish that?? You don't know what you
>> are asking.
>
> Did I mention anything about ASCII or Unicode ? Using Window Form
> Application (GUI) in VB.net is absolutely possible.
> You don't understand my question and therefore your don't know what you
> are answering !

you dont know what a control is. Go kiss my ass.

On Thursday, September 23, 2021 at 2:49:52 PM UTC-4, Ruben Pike wrote:
> lchen...@gmail.com wrote:
>
> >> > This is in the "expanded" form. If I can "collapse" it into -b + D
> >> > -------------
> >> > x = --------- by noting D = / b^2 - 4 a c 2a Then the expression will
> >> > be much more concise.
> >> you seems retarded. Are you going to use "treeView control", Visual
> >> Basic, ascii or unicode to accomplish that?? You don't know what you
> >> are asking.
> >
> > Did I mention anything about ASCII or Unicode ? Using Window Form
> > Application (GUI) in VB.net is absolutely possible.
> > You don't understand my question and therefore your don't know what you
> > are answering !
> you dont know what a control is. Go kiss my ass.

A "control" is simply a CLASS of shits. Like you !!!