Question

I have the following situation.

Need:

• A – always visible;
• B – “hiddable”;
• Form1 – resizable;
• The most right visible panel Docked.
• In the case in the picture, B should collapse, minimizing the form to the “A” size…

Apparently it is simple, but I tried some hours and posted this topic.

Answer 1

I used as base a Form + SplitContainer with a docked-to-right button in the Panel1.
There is a need to remember the actual Form size and to reestablish it when the button expands, or to reduce the form size to the Panel1 size when the form “collapses”.