Visual Studio 2010 default zoom level
Solution 1:
The VSCommands Lite extension appears to do this, judging by this blog post.
I don't think there's any way to do this other than using/writing an extension; macros don't appear to have access to the zoom controls.
If you wanted to write your own custom extension to do this you'd probably be looking at using the IWpfTextView interface.
Another good option is Presentation Zoom.
Solution 2:
You can also use the keyboard. The default bindings are:
- ctrl + shift + . (zoom in)
- ctrl + shift + , (zoom out)
Solution 3:
As far as I am aware you cannot set a default value for the zoom level. Instead, consider setting the default font size for the text editor.