Porting a GUI from a pc to a wince device - issue is with the size of the screen

Any of those help There isn't a Delphi version for WinCE, so you would need to rewrite the applications. The same applies for the Borland Builder's control libraries. Only if you have used plain Win32 API, you would be able to port your application to WinCE easily. You may also encounter problems with the hardware access part. The Serial Port driver may not work as is. Also, you need to find a WinCE board that can act as USB host and provides HID drivers (this isn't very common).
In conclusion, I believe that you would be better of with Windows XP Embedded boards. These should run your applications as they are.

should help you out There isn't a macro to check this, and couldn't be - the compiler has no idea what target you're going to run on. You have to do a run-time check using something like SystemParametersInfo with SPI_GETOEMINFO and look for emulator-specific text (IIRC it returns something like "Microsoft DeviceEmulator").

To fix this issue There is a great tutorial at http://developer.android.com/guide/practices/screens_support.html that sets out best practices for layout design. Also look into building your application around fragments to support multiple pages on larger devices using http://developer.android.com/guide/practices/tablets-and-handsets.html
Finally, if you only have one device, you can use the emulator to test different screen resolutions and make sure it still works as intended.

this one helps. XML is not good IDEA here, because you are not going to send/receive data belong app and an external resource, I thing a customized-format (encrypted) file, in a no visible path (temp, resources) would be nice.
also you would embed the info inside the execution file, but be careful about this, that would hurt your file.

I wish this helpful for you So I guess you used Xcode's “Reset to Suggested Constraints” option, like this: