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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hi<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I have the answer for making this work with Visual Studio<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">In Widget.dll I have MyLabel.h and MyLabel.cpp<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">In this project I set the pre-processor directive QDESIGNER_EXPORT_WIDGETS<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">MyLabel is declared as
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">class QDESIGNER_WIDGET_EXPORT  MyLabel : public QLabel<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">…<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">In the plugin project I add MyLabel.cpp and MyLabel.h as existing items and build<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks for your input<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Harish Surana [mailto:surana4u@gmail.com]
<br>
<b>Sent:</b> 03 December 2013 11:42<br>
<b>To:</b> Graham Labdon<br>
<b>Cc:</b> interest@qt-project.org<br>
<b>Subject:</b> Re: [Interest] using designer plugin in application<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I would say first try to run this example <a href="http://qt-project.org/doc/qt-4.8/designer-customwidgetplugin.html">
http://qt-project.org/doc/qt-4.8/designer-customwidgetplugin.html</a> and then compare with your implementation.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><o:p> </o:p></p>
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<p class="MsoNormal">On Tue, Dec 3, 2013 at 12:24 PM, Graham Labdon <<a href="mailto:Graham.Labdon@avalonsciences.com" target="_blank">Graham.Labdon@avalonsciences.com</a>> wrote:<o:p></o:p></p>
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<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">So I added the export and includes QDesignerExportWidget to my class and now it wont compile –</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Moc'ing MyLabel.h...</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">1>  moc_MyLabel.cpp</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">1>Build\moc\moc_MyLabel.cpp(55): warning C4273: 'MyLabel::qt_static_metacall' : inconsistent dll
 linkage</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">1>          c:\sandbox\testplugin\widgets\build\moc\../../MyLabel.h(10) : see previous definition
 of 'qt_static_metacall'</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">1>Build\moc\moc_MyLabel.cpp(62): warning C4273: 'staticMetaObject' : inconsistent dll linkage</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">1>          c:\sandbox\testplugin\widgets\build\moc\../../MyLabel.h(10) : see previous definition
 of 'public: static QMetaObject const MyLabel::staticMetaObject'</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">1>Build\moc\moc_MyLabel.cpp(62): error C2491: 'MyLabel::staticMetaObject' : definition of dllimport
 static data member not allowed</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">1>Build\</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">……………..</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I have no idea why</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Harish
 Surana [mailto:<a href="mailto:surana4u@gmail.com" target="_blank">surana4u@gmail.com</a>]
<br>
<b>Sent:</b> 03 December 2013 11:13</span><o:p></o:p></p>
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<p class="MsoNormal"><br>
<b>To:</b> Graham Labdon<br>
<b>Cc:</b> <a href="mailto:interest@qt-project.org" target="_blank">interest@qt-project.org</a><br>
<b>Subject:</b> Re: [Interest] using designer plugin in application<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt;line-height:12.0pt">
If you look for QDESIGNER_WIDGET_EXPORT in the documentation. You will get:<o:p></o:p></p>
<div style="border:solid #E6E6E6 1.0pt;padding:4.0pt 4.0pt 4.0pt 4.0pt">
<h3 style="margin-bottom:0cm;margin-bottom:.0001pt;background:#F6F6F6"><span style="font-size:10.5pt;font-family:"Arial","sans-serif";color:#1A1A1A;font-weight:normal">QDESIGNER_WIDGET_EXPORT</span><o:p></o:p></h3>
</div>
<p style="line-height:12.0pt"><span style="font-size:10.5pt;font-family:"Arial","sans-serif";color:#313131">This macro is used when defining custom widgets to ensure that they are correctly exported from plugins for use with <i>Qt Designer</i>.</span><o:p></o:p></p>
<p style="line-height:12.0pt"><span style="font-size:10.5pt;font-family:"Arial","sans-serif";color:#313131">On some platforms, the symbols required by <i>Qt Designer</i> to create new widgets are removed from plugins by the build system, making them unusable.
 Using this macro ensures that the symbols are retained on those platforms, and has no side effects on other platforms.</span><o:p></o:p></p>
<p style="line-height:12.0pt"><span style="font-size:10.5pt;font-family:"Arial","sans-serif";color:#313131">For example, the </span><span style="font-size:10.5pt;font-family:"Arial","sans-serif";color:#2C418D">World Time Clock Plugin</span><span style="font-size:10.5pt;font-family:"Arial","sans-serif";color:#313131"> example
 exports a custom widget class with the following declaration:</span><o:p></o:p></p>
<div style="border:solid #E6E6E6 1.0pt;padding:15.0pt 0cm 15.0pt 0cm;margin-left:11.25pt">
<pre style="margin-bottom:18.75pt;background:#F6F6F6;border-radius:7px;overflow:hidden"><span style="font-size:9.0pt;color:#313131"> </span><o:p></o:p></pre>
<pre style="margin-bottom:18.75pt;background:#F6F6F6"><span style="font-size:9.0pt;color:#313131"> class QDESIGNER_WIDGET_EXPORT WorldTimeClock : public </span><span style="font-size:9.0pt;color:#2C418D">QWidget</span><o:p></o:p></pre>
<pre style="margin-bottom:18.75pt;background:#F6F6F6"><span style="font-size:9.0pt;color:#313131"> {</span><o:p></o:p></pre>
<pre style="margin-bottom:18.75pt;background:#F6F6F6"><span style="font-size:9.0pt;color:#313131">     Q_OBJECT</span><o:p></o:p></pre>
<pre style="margin-bottom:18.75pt;background:#F6F6F6"><span style="font-size:9.0pt;color:#313131">     ...</span><o:p></o:p></pre>
<pre style="margin-bottom:18.75pt;background:#F6F6F6"><span style="font-size:9.0pt;color:#313131"> };</span><o:p></o:p></pre>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On Tue, Dec 3, 2013 at 12:00 PM, Graham Labdon <<a href="mailto:Graham.Labdon@avalonsciences.com" target="_blank">Graham.Labdon@avalonsciences.com</a>> wrote:<o:p></o:p></p>
<div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hi</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I have read this but cannot get it to work (I am using Qt5.1.1 with Visual Studio</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I have a library called Widgets.dll that contains 1 class declared as</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">#include <QLabel></span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">#include "widgets_global.h"</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">class WIDGETS_EXPORT MyLabel : public QLabel</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">{</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">               Q_OBJECT</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">public:</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">               MyLabel(QWidget *parent);</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">               ~MyLabel();</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">private:</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">              
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">};</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I have set up my plugin project so that it can see the header file for MyLabel and can see the Widgets.lib</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">The plugin project builds without error but is not visible in Designer</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Can anyone see the reason for this?</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Harish
 Surana [mailto:<a href="mailto:surana4u@gmail.com" target="_blank">surana4u@gmail.com</a>]
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<b>Sent:</b> 03 December 2013 10:20<br>
<b>To:</b> Graham Labdon<br>
<b>Cc:</b> <a href="mailto:interest@qt-project.org" target="_blank">interest@qt-project.org</a><br>
<b>Subject:</b> Re: [Interest] using designer plugin in application</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Yes it is technically possible to make the widgets accessible to Qt Designer without linking
<em>widgets dll</em> against <em>QtDesigner4.dll</em>. Some possible approaches are described here:
<a href="http://qt-project.org/doc/qt-4.8/designer-creating-custom-widgets.html" target="_blank">
http://qt-project.org/doc/qt-4.8/designer-creating-custom-widgets.html</a> (see the section "Splitting up the Plugin").<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On Tue, Dec 3, 2013 at 10:31 AM, Graham Labdon <<a href="mailto:Graham.Labdon@avalonsciences.com" target="_blank">Graham.Labdon@avalonsciences.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Hi</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">I have developed a number of Qt Designer plugins and can use them in my applications.</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">But obviously I need my apps to link against the plugin library which means when I deploy the application I need
 to deploy the plugin library as well.</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">What I would like is for widget classes to be compiled into one library that both the application and the designer
 plugin can use but I have been unable to achieve this.</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Is this possible?
</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> </span><o:p></o:p></p>
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_______________________________________________<br>
Interest mailing list<br>
<a href="mailto:Interest@qt-project.org" target="_blank">Interest@qt-project.org</a><br>
<a href="http://lists.qt-project.org/mailman/listinfo/interest" target="_blank">http://lists.qt-project.org/mailman/listinfo/interest</a><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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