Wow it's been a long time since I posted anything in here.....
Today I'll be very brief because the subject is quite easy to cover but can be quite puzzling when it happens to you... These days at work I'm exploring Coded UI Test in VS2010, Microsoft Test Manager 2010 and Microsoft Test Runner 2010 which is cool because I've been digging aroung VS2010 testing tools on my own since a year now and also started focusing on VNext's testing tools... So when you automate a test you will most likely end up having to use the Coded UI Test Builder shown here
When inspecting controls on your app with the little "Target" tool, you could be confronted to your controls being highlighted "in the wrong place" on your screen. Kind of like there would be some sort of offset between the control you are pointing to and the visual rectangle cue created by the tool to say "here's the control I think you're pointing to"... Looking at the picture here you can see it's pretty anoying to point at a control, see the tool inspecting the right object but highlighting it lower and to the right of where the control actually is... I have no clue if this only happens in WPF but here's the solution or at least what worked for me... In my case I was using the "Medium - 125%" display setting in the personalization of my Windows 7 laptop... The Coded UI Test Builder only works well when your display is set to 100% (smallest in my case). Change that option to 100% and everything will start being highlighted at the right place in the tool... I do think that this was intentionnal and that the tool was built to work only when using 100%... What a shame but now you know so stop reading and go back to work !
Happy automating :)