Free Pascal Qt4 Binding

Description

The Free Pascal Qt4 binding allows Free Pascal to interface with the C++ Library Qt.

This binding does not cover the whole Qt4 framework but only the classes needed by the Cross Platform Lazarus IDE to use Qt as a Widget set

Contact

if you have questions or want to follow up on the latest developments: subscribe to the

Lazarus LCL/Qt Mailing List

Version History

V2.5
29 Dec 2011

SSE Stack alignment fixes. Solves problems with Kde Oxygen Style Replaces V2.3

V2.4
07 July 2011

More Range Check Error Fixes. Replaces V2.3

V2.3
16 June 2011

Qt 4.7 support

V2.2
03 Aug 2010

Qt for Maemo (N900)

V2.1
19 Feb 2010

Added QScocketNotifier, QTcpServer, QUdpSocket, QPointF, QtVersion

V2.0
18 Jan 2010

Qt qmake build system. qt4intf renamed to Qt4Pas

Links

Free Pascal (FPC)

Lazarus

FPC Wiki Qt4 Binding

Lazarus Wiki Qt Interface

FPC Wiki All Qt bindings

Online FPC Manuals

FPC-Pascal Mailing List

FPC-Devel Mailing List

Lazarus Mailing List

Nokia Qt Documentation

Qt2/Embedded Binding

Screenshots

The following screenshots provide a glimpse of results achieved

Click on the thumnails for larger images.

Documentation

Documentation about this Free Pascal Qt4 Binding can be found on this FPC Wiki Page

Downloads

Refresh your page (F5) if you have link problems

V2.5 (Qt 4.5.X, compatible till Qt 4.8.X)

Fixed Stack Alignment problems when Qt uses SSE.
Qt 4.5 to Qt 4.8 support
- based on classes/methods available in Qt 4.5 but also compiles with Qt 4.8.
- and adds stack alignment compilation options when appropriate (Qt Version and Platform).
Windows Note: Qt 4.5 and Qt 4.7 use different MinGW versions
- Different c++ compiler and dll dependancies
- You cannot use the binding binary compiled for one with the other
- Qt 4.7 binaries from Nokia, require a binding binary compiled with -mstackrealign, note that the Qt 4.5 MinGW compiler does not know nor accepts this compiler option
Linux Note: In general, due to binary compatibility differences between the different c++ compilers of the different Linux distributions, you should not use the provided binaries but compile yourself the binding on your distribution. The binaries are just provided for convenience but may not work on your specific distribution.
Mac OsX Note: The provided binary was created with XCode 3 as XCode 4 is not available for free.

V2.2 (Maemo 5 Qt 4.6.2 for N900 PR 1.2)

Maemo Binding Instructions

The Lazarus LCL/Qt code still needs a patch, coordination is in progress.

Lazarus LCL/Qt WebKit demo

This demo implements a very basic browser, and provides sample code for cookies, proxy, authentication, flash enabling ...

Needs Binding >= V1.72 (lazarus svn 21913)

Download LCL WebKit Demo