问题
I searched very much for this answer,Then I came to know that we can't embedded widgets into Treeview But I found the Features of Treeview. In this below Features It is telling that Treeview will support of including checkbox also.
Here is a list of TreeView features:
Auto-sizing column widths and row heights.
Hide/move columns or nodes.
Sortable by columns or sub-trees.
External data storage (in a blt::tree).
Multiple TreeViews can share all a tree.
Easy to use dynamic loading (for sub-trees).
Support for multiple style types, including:
-> textbox: text cell with optional images.
*-> checkbox: a boolean value.*
-> combobox: a multi-choice value.
-> barbox: numeric value with progress bar.
-> windowbox: arbitrary embedded windows.
Styles can be applied to cols, rows and/or cells
The -altstyle option for alternating rows (bgcolor, etc).
The -levelstyles option for per-level styles.
Background image-tile: widget, columns, and cell-styles.
Drop shadow text.
Powerful builtin cell editing.
Dual mode display: flat and tree.
来源：https://stackoverflow.com/questions/50015662/how-can-i-add-checkbox-in-ttk-treeview