How to implement an indentable window ??

312307284

Is a window similar to the toolbar in VS, I do not know how to achieve it.

I now make a child window of MDI,
dim newForm as Form
newForm.Dock = DockStyle.Left
This allows the window to be docked.

But how can it be set to a small standard with a lock?

张家太太

Completed in the chlick event with similar icons