By "tree view" I am assuming you mean a Pedigree Chart.
It's been awhile, but if that's the case I think the following is close to the process.
There are two ways to copy a Pedigree Chart to a Word Document: In the Tree View highlight the base person. In the main menu click Reports>Pedigree chart. From the "Create a Report" screen select the "Pedigree" tab. Fill out the options you want. In the bottom right of the screen is the "Print to" box.
There are two options: Screen/Printer and Acrobat file *pdf.
Select "Screen/Printer and press the Create button. This gives you a "Print Preview" with the chart displayed. From the menu at the top press the "Copy" button. This places the chart on the Clipboard and can now be pasted (CTRL+V) to Word.
The second way: Repeat the process but change the "Print to" box to "Acrobat file *pdf" and press the "Create" button. You will get a "Name of File to Create" box. Select a name and folder and click "Save." You can then print the chart or if you want it in Word you can Edit>Select All in the Acrobat Reader main menu then Edit>Copy. Then paste to Word.
If I remember correctly, what appears in Word is an image of the chart and cannot be edited.