[Lazarus] Window sizing on gtk

[Hans-Peter Diettrich]

Max Vlasov schrieb:
> Hi,
> I noticed a little difference between gtk and win32 in handling window 
> sizing programmatically and appreciate any advice on the subject.

You should understand that non-Windows platforms have separate window 
mangers, which do not allow to control forms as on Windows. The 
widgetsets only have control over the *client* area of a window, but not 
over the non-client areas.


> But both seems to not work on gtk 
> (no visible change for WindowState changing and no visiting both  
> WM_NCHitTest and CM_HITTEST handlers)

Right, these only work on Windows. The missing NC functionality makes it 
e.g. impossible to drag-dock forms on Linux, by dragging their title 
bars, as Delphi does on Windows.

DoDi