Best I can do is create VBA as below and assign to keystrokes and/or buttons. It doesn't give you buttons near the slider (a toolbar there would be a floating window and wouldn't move when you resized the main Window), but you can put a button either side of the Zoom dropdown in the Standard toolbar. Even to do that I had to
- create the macros (say, in Normal.dotm)
- go into View-Toolbars->Customize Toolbars and Menus...->Toolbars and
Menus
- Click "New ..." for a new (temporary) toolbar. The default name is fine.
- Click the Commands tab in the dialog box
- Under Categories, select Macros
- Locate each macro in the list on the right and drag it to the new
toolbar
- Right click on each new "button" (which will show the macro name) and
- click Properties...
- Select an icon from the dropdown at the top left (I used the arrows
at the left of row 5)
- In the View: dropdown, select "Default style"
- Then drag each arrow to the appropriate location in the Standard
toolbar
- Delete the temporary toolbar
Word's event programming could clearly be improved because even then, when you change the zoom, the Zoom dropdown values do not update until you click in the document again (whereas the value on the slider at the bottom does update immediately).
The macro code...
Sub zoomIn10()
On Error Resume Next
With ActiveWindow.ActivePane.View.Zoom
.Percentage = .Percentage + 10
End With
End Sub
Sub zoomOut10()
On Error Resume Next
With ActiveWindow.ActivePane.View.Zoom
.Percentage = .Percentage - 10
End With
End Sub