Widgetset

Widgetsets support platform-sensitive development with the Lazarus IDE system. They act as adapter libraries that provide an interface between a platform-inpedentent sourcecode written in Free Pascal and platform-specific system functions. Thus they allow for development of platform-native software without requiring to provide specific source code for different target platforms.

Interaction of class libraries and widgetsets in Lazarus and Free Pascal

Widgetsets act as basis for the Lazarus Component Library (LCL).

Available widgetsets

Currently (June 2020), the development status of widget toolkit interfaces is roughly as follows:[1]

Widget set Supported operating systems Status
Windows API, GDIWindowsMainstream use
Windows CE API, GDIWindows CEMainstream use
GTK+ 1.2.xLinux (via X11)Deprecated
GTK+ 2.8+Linux (X11 and framebuffer), Windows, and Mac OS X (via X11)Mainstream use
GTK+ 3.xAs Gtk2Alpha
Qt 4.5+, 5.6+[2]Linux (X11 and framebuffer), Windows, Mac OS XMainstream use. Works in Windows, Linux, Mac OS X, Maemo, etc
CocoaMac OS XIn progress
CarbonMac OS XMainstream use
fpGUIWindows, Windows CE, Linux (via X11)Initial stage
Lazarus Custom Drawn ControlsAndroid, Windows, Linux (via X11), Mac OS XInitial stage

References

Further reading

  • Michaël van Canneyt; Florian Klämpfl (2012), Free Pascal (Free Pascal 2 ed.), Computer & Literatur Verlag GmbH, ISBN 978-3936546729, OL 25421359M, 393654672X
  • Michaël van Canneyt; Mattias Gärtner; Swen Heinig; Felipe Monteiro de Carvalho; Inoussa Ouedraogo; Jörg Braun (2011), Lazarus, Böblingen, Germany: Computer & Literatur Verlag GmbH, OL 25426539M
  • Michaël van Canneyt; Mathias Gärtner; Swen Heinig; Felipe Monteiro de Carvalho; Inoussa Ouedraogo (2011), Lazarus - the complete guide, Blaise Pascal Magazine, OL 25427992M
  • Roderick Person (2013), Getting Started with Lazarus IDE, Packt Publishing, ISBN 978-1782163404, OL 25426631M, 1782163409
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