[Qt-interest] Linux shared library can not load Qt resources?Resource initialization problem ?

[Ed Sutton]

Hi Jaco,

Thank you very much for providing the solution to my problem.

>I've run into funny problems before on Ubuntu where you have multiple libraries with resource files with the same names. For example, if you have two libraries both called "resources.qrc" only one of the will be loaded. Also, if 0>you have a "resources.qrc" file in your application and a "resources.qrc" file in a shared library, only one of them will be loaded. I could not figure out which one but it seemed like it depended on the order that its loaded. Thus >I've started to give my resource files the same names are the libraries where they belong and from there on it just works.

>Note that it was only a problem on Ubuntu, not on Windows.

It turns out using the same name for the Qt resource file for both the shared library and the application is a problem on Red Hat Enterprise Linux 5.x as well.  I renamed it and all is good now!

Thanks you so much!  I would have *never* figured this one out.

Thanks again,

-Ed




Hope it helps,
Cheers
Jaco

On Tue, Nov 30, 2010 at 11:03 PM, Ed Sutton <ESutton at fescorp.com<mailto:ESutton at fescorp.com>> wrote:

On Nov 30, 2010, at 4:19 PM, Scott Aron Bloom wrote:

> Please don't respond to my email.. Reply to the list...
>
> Yes, however, I usually call it for all my DLLs that contain resources
> from the main.cpp or after they are loaded via a QLibrary::load


Curious.  Still no success.

I bypassed the Q_INIT_RESOURCES macro and added this to the constructor of the shared library class that access the resource.

SharedLibClass:: SharedLibClass()
{
  // I think Q_INIT_RESOURCE basically exapnds to this:
  // resource file is named resources.qrc.
  extern int qInitResources_resources();
  qInitResources_resources();
}

>
> Scott
>
> -----Original Message-----
> From: Ed Sutton [mailto:ESutton at fescorp.com<mailto:ESutton at fescorp.com>]
> Sent: Tuesday, November 30, 2010 2:17 PM
> To: Scott Aron Bloom
> Subject: Re: [Qt-interest] Linux shared library can not load Qt
> resources?Resource initialization problem ?
>
>
>> Are you calling Q_INIT_RESOURCES ??
>
> My resource file is named resources.qrc.  I added
> Q_INIT_RESOURCE(resources) to a class constructor in the shared library
> that the client creates an instance of.  The resource is used internally
> by the library and not accessed directly.  Calling it there did not
> help.  Is this what you meant?
>
> Than you for your help,
>
> -Ed
>
>
>
>
>
>>
>> Scott
>>
>> -----Original Message-----
>> From: qt-interest-bounces at trolltech.com<mailto:qt-interest-bounces at trolltech.com>
>> [mailto:qt-interest-bounces at trolltech.com<mailto:qt-interest-bounces at trolltech.com>] On Behalf Of Ed Sutton
>> Sent: Tuesday, November 30, 2010 2:06 PM
>> To: Qt-interest Interest
>> Subject: [Qt-interest] Linux shared library can not load Qt resources?
>> Resource initialization problem ?
>>
>> I added a Qt resource file to my shared library project.  I added a
>> "/resource" prefix then added an XSL file to the resource.  I can not
>> figure out how to load the resource.  I found some postings about
>> problems with Qt resources in libraries but did not understand or find
> a
>> solution that worked.  Has anyone seen this?
>>
>> QString resourcePath = ":/resource/files/eot.xsl";
>> if( false == QFile::exists(resourcePath)
>> {
>>  printf("*** Error - Resource path not found : \"%s\"\n",
>> resourcePath.toLatin1().data());
>> }
>> else
>> {
>>  QFile::copy(resourcePath, styleSheetPathFileName))
>> }
>>
>>
>> // File: resources.qrc
>>
>> <RCC>
>>   <qresource prefix="/resource">
>>       <file>files/eot.xsl</file>
>>   </qresource>
>> </RCC>
>>
>> Thanks in advance,
>>
>> -Ed
>>
>>
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>
>
> -Ed
>
>
> _______________________________________________
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-Ed


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-Ed