[fpc-pascal] [OT] fpc-gtk2 application on arm

[Koenraad Lelong]

Hi,
I think it's off-topic, but since I don't know where to look I take a 
chance asking here in the hope that some GTK-gurus can help me further.
I'm making a gtk2 application. Since it has to run on an arm-box with a 
320x240 screen I made a main form of that size (actually 320x220 because 
the title bar). This displays fine, full screen. On that form I have a 
button to show a modal form, defined with the same size. When I display 
this modal form on my i386-PC I get what I expected : a window of the 
same size as the main window. When I display this on my arm-box it's 
smaller and some buttons are clipped away.
I would like to understand why this happens. I could trim the form by 
trail and error to fit it in the place I get, but this is not good enough.
I don't know how I could google for this, if it's possible. I looked 
around on the gtk.org site without luck.
Is there anyone who can point me in the right direction ?
Regards,
Koenraad Lelong.