I am told that WinCE 6.0 (not the Windows Mobile 6.0) is not supported/fully supported by current versions of Lazarus. Latest WinCE version supported by Lazarus is 5.2 I believe.
I am having same problems with Lazaus 1.4.4 and cross compiler arm 1.4.4 on my WinCE 6.0 device.
Forms BorderStyle is always stays as bsDialog. That's why WindowState := wsMaximized doesn't work. That's why I need to set Left and Top properties both to 0 (zero) of the Form in order to be able to see it when running on device. That's why there is no maximize/minimize buttons near X button.
I assume you are on WinCE 6.0 and most likely for above reason you are having problems.