[Qt-interest] problems implementing QHelpEngine !

[Constantin Makshin]

Static version of Qt doesn't support run-time loading of plugins.

Read this for details on how to use plugins with statically-linked Qt:
http://doc.qtsoftware.com/4.5/plugins-howto.html#static-plugins

On Wed, 08 Jul 2009 09:51:26 +0400, Velusamy, Baskar  
<Baskar.Velusamy at chevron.com> wrote:
> HI
>
>    it seems like there is some problem in QT plug-ins,   copy QT plug-in
> directory to your   exactable location. Please check below reference
> and check whether it works..
>
> Regards
>
> Baskar
>
> Qt Plugins
>
> Your application may also depend on one or more Qt plugins, such as the
> JPEG image format plugin or a SQL driver plugin. Be sure to distribute
> any Qt plugins that you need with your application, and note that each
> type of plugin should be located within a specific subdirectory (such as
> imageformats or sqldrivers) within your distribution directory, as
> described below.
>
> Note: If you are deploying an application that uses QtWebKit to display
> HTML pages from the World Wide Web, you should include all text codec
> plugins to support as many HTML encodings possible.
>
> The search path for Qt plugins (as well as a few other paths) is
> hard-coded into the QtCore library. By default, the first plugin search
> path will be hard-coded to be a plugins subdirectory of the Qt
> installation:
>
>  C:<path to Qt>\plugins
>
> Pre-determined paths like this one have certain disadvantages. For
> example, they may not exist on the target machine. For that reason you
> need to examine various alternatives to make sure that the Qt plugins
> are found:
>
> *	Using qt.conf. This is the recommended approach since it
> provides the most flexibility.
> *	Using QApplication::addLibraryPath() or
> QApplication::setLibraryPaths().
> *	Using a third party installation utility to change the
> hard-coded paths in the QtCore library.
>
> The How to Create Qt Plugins document outlines the issues you need to
> pay attention to when building and deploying plugins for Qt
> applications.
>
> [Deploying Qt Applications]
>
> From: qt-interest-bounces at trolltech.com
> [mailto:qt-interest-bounces at trolltech.com] On Behalf Of Sarvesh Saran
> Sent: Tuesday, July 07, 2009 8:33 PM
> To: qt-interest at trolltech.com
> Subject: [Qt-interest] problems implementing QHelpEngine !
>
> Hi,
>
> I am trying to provide Help in my application in a manner similar to the
> following QT Quarterly article :
>
> http://doc.trolltech.com/qq/qq28-qthelp.html
>
> I am not using qmake to build the application..
>
> I am trying to link together all Qt Libraries statically into my
> application.
>
> After linking libQtsql.a and libQtHelp.a , the application does compile
> but crashes on start up with the following error..
>
> QSqlDatabase: QSQLITE driver not loaded
>
> QSqlDatabase: available drivers:
>
> Segmentation fault
>
> Any idea why this might me happening? Any help would be greatly
> appreciated.
>
> Thanks,
>
> Sarvesh

-- 
Constantin "Dinosaur" Makshin