It is a combination of 1 and 2. If 2 is available (Win XP, OS/X) then it is used, otherwise it is emulated. In most cases it is impossible to tell a Qt application from an application using native widgets.
The advantage of Qt's approach is that you can actually change/extend a widget by subclassing. You are also not limited to the lowest common denominator offered by all supported platforms - a serious problem with the third approach.
First of all, QT/embedded is just as bloated as X (maybe even more).
You can't compare X11 alone to Qt/Embedded. Qt/Embedded is a cross-platform application framework, widgets, file/socket abstractions, etc. X is practically useless without a toolkit. If you compare the size of Qt/Embedded's graphics, window mangement and device io code to X11 then you'll see why Qt/Embedded makes sense.
Re:Innovation has left Palm in the dust
on
PalmOS 5 Turns Gold
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· Score: 2, Informative
Sharp's Zaurus has a fatal flaw: they require a licensing fee for every application developed
If you want to write Free (GPL) software you can get a free SDK here.
It is a combination of 1 and 2. If 2 is available (Win XP, OS/X) then it is used, otherwise it is emulated. In most cases it is impossible to tell a Qt application from an application using native widgets.
The advantage of Qt's approach is that you can actually change/extend a widget by subclassing. You are also not limited to the lowest common denominator offered by all supported platforms - a serious problem with the third approach.
Martin.
You can't compare X11 alone to Qt/Embedded. Qt/Embedded is a cross-platform application framework, widgets, file/socket abstractions, etc. X is practically useless without a toolkit. If you compare the size of Qt/Embedded's graphics, window mangement and device io code to X11 then you'll see why Qt/Embedded makes sense.
Sharp's Zaurus has a fatal flaw: they require a licensing fee for every application developed
If you want to write Free (GPL) software you can get a free SDK here.
Probably thinking of Qt Palmtop with Konqueror
See lots of nice screenshots and download it here:
. html
http://www.trolltech.com/products/qt/embedded/qpe