OK. Thank you. I will return the Surface Pro to it's owner. Thanks for your support.

The EMFs that we are seeing on the Surface Pro in our application (not in the test program) are exactly twice as large as they should be, if that is of any help/interest.

Version 1607 Build 14393.0, but we first saw this on another Surface Pro from China, so I doubt that the exact OS build is important in reproducing this bug.

This is the Surface Pro result using the new source code you provided.

We have borrowed a Surface Pro to use for testing. We will have to return it at the end of the day on Friday. So, after that, I will be unable to respond to requests for changes in the test software.

Here are the results for Win 7 and for the Surface Pro Win 10

Adding the Draw does not change the behavior of the program on the SurfacePro

Jon

I have attached a ZIP file containing the following: 1) SurfaceProTestDelphi.ZIP: this contains the source code for the test program 2) Two PNG files, showing screen shots on both my Development VM (Dev VM, Win 7) and the Surface Pro 3 (Win 10). The left part of each screen shot shows the running te...

Your request is reasonable. I will try to get to this in the next few days.

Jon

We have a program that has worked flawlessly for 10 years through Windows XP, 7, 8, and 10. But now when we run it on a Surface Pro under Win 10, the graphs are only visible in 1/4 of the space that they were previously. It is as if the EMF is prepared with the correct "canvas" size, but the chart i...