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<div>Hi Sascha,</div>
<div> </div>
<div>First thanks a lot for the quick reply I got on my previous post. I decided to go for the first approach and created my own CTK plugin as we should stay in the context of a hosting application. I managed to start and run my hosted application through
the DICOM Application Host interface with this approach.</div>
<div> </div>
<div>I am now looking into passing some dataset to the hosted application. I wanted to start with something simple where the end-user select a folder that contains a list of DICOM files (one series) and pass it to my application. After choosing the folder;
I am updating the AvailableData structure and then publish it to the hosted application when I am starting it. By the time the SOAP request is done I could see that the SOAP message will contains my list of uuids I created for one series but when the message
is received <font size="2">(</font><font face="ProggySquareTTSZ" size="2">ctkSoapMessageProcessorList::process method)</font> on the hosted application; the message is not the same and only contains one uuid now for the series. Is there any limitation currently
within QtSoap to support arrays that you are aware of? I have seen some discussion regarding on the ctk website (<a href="http://www.commontk.org/index.php/Documentation/DicomApplicationHosting:DataExchangeDevelopment"><font color="#0000FF"><u>http://www.commontk.org/index.php/Documentation/DicomApplicationHosting:DataExchangeDevelopment</u></font></a>)
but I am not sure what the status here. </div>
<div> </div>
<div>If there is still some restriction with QtSoap regarding the array; should I send multiple notifyDataAvailable messages to the application; one for each file I am willing to get on the application side. Is there any other best alternative beside my first
approach?</div>
<div> </div>
<div>Best,</div>
<div>Michael</div>
<div> </div>
<div> </div>
<div><font face="Consolas, monospace" size="2">-------------------------------------------------------------------------------------------------------------------------------</font></div>
<div><font face="Consolas, monospace" size="2">From: Sascha Zelzer <s.zelzer@dkfz-heidelberg.de></font></div>
<div><font face="Consolas, monospace" size="2">Subject: Re: [Ctk-developers] How to wrap a Qt App into an hosted app</font></div>
<div><font face="Consolas, monospace" size="2"> confirming to DICOM Supplement 118 / Working Group 23</font></div>
<div><font face="Consolas, monospace" size="2">To: ctk-developers@commontk.org</font></div>
<div><font face="Consolas, monospace" size="2">Message-ID: <4DCD447F.7060402@dkfz-heidelberg.de></font></div>
<div><font face="Consolas, monospace" size="2">Content-Type: text/plain; charset="windows-1252"; Format="flowed"</font></div>
<div><font face="Consolas, monospace" size="2"> </font></div>
<div><font face="Consolas, monospace" size="2">Hi Michael,</font></div>
<div><font face="Consolas, monospace" size="2"> </font></div>
<div><font face="Consolas, monospace" size="2">Welcome to the CTK mailing list.</font></div>
<div><font face="Consolas, monospace" size="2"> </font></div>
<div><font face="Consolas, monospace" size="2">DICOM Application Hosting support in CTK is still work in progress, so please be aware that not everything will work yet. Especially the data exchange interface needs more work. Nevertheless, I hope my comments
below will get you started to experiment with your own Qt based DICOM App. Comments, bug reports, patches etc. are also always welcome!</font></div>
<div><font face="Consolas, monospace" size="2"> </font></div>
<div><font face="Consolas, monospace" size="2">Best,</font></div>
<div><font face="Consolas, monospace" size="2">Sascha</font></div>
<div><font face="Consolas, monospace" size="2"> </font></div>
<div><font face="Consolas, monospace" size="2">On 05/13/2011 03:56 AM, Caylus, Michael (SCR US) wrote:</font></div>
<div><font face="Consolas, monospace" size="2">> Hello,</font></div>
<div><font face="Consolas, monospace" size="2">> I am new to the CTK SDK and would like to wrap my Qt application into </font></div>
<div><font face="Consolas, monospace" size="2">> an hosted app. I have seen such an example by turning on in the CMake</font></div>
<div><font face="Consolas, monospace" size="2">> configuration: ctkExampleHost and ctkExampleHosted App. I came up </font></div>
<div><font face="Consolas, monospace" size="2">> with the following questions after playing with it:</font></div>
<div><font face="Consolas, monospace" size="2">></font></div>
<div><font face="Consolas, monospace" size="2">> 1. In order to make this wrap-up for my app; I was considering to</font></div>
<div><font face="Consolas, monospace" size="2">> edit the org_commontk_dah_exampleapp plug-in which relies on the</font></div>
<div><font face="Consolas, monospace" size="2">> org_commontk_dah_app and org_commontk_dah_core plug-in and keep</font></div>
<div><font face="Consolas, monospace" size="2">> the ctkExampleHostedApp. Is this approach the right way to</font></div>
<div><font face="Consolas, monospace" size="2">> proceed? This implies splitting my app into the hostedApp and a</font></div>
<div><font face="Consolas, monospace" size="2">> CTK plugin; with most of the work to be done on the plug-in</font></div>
<div><font face="Consolas, monospace" size="2">> level I guess. I have seen some doc explaining how to embed the</font></div>
<div><font face="Consolas, monospace" size="2">> CTK plugin framework in my app too. Can I achieve the same</font></div>
<div><font face="Consolas, monospace" size="2">> result with this approach and how?</font></div>
<div><font face="Consolas, monospace" size="2">></font></div>
<div><font face="Consolas, monospace" size="2">As you have already seen, it is possible to use the plugin framework from inside your own application and this is also the preferred way (instead of modifying the existing CTK plug-ins directly). In the case of
a DICOM App, I can think of two different approaches, depending on your requirements:</font></div>
<div><font face="Consolas, monospace" size="2"> </font></div>
<div><font face="Consolas, monospace" size="2">1.) Your app is a "pure" DICOM App, i.e. you do not need run it outside the context of a "Hosting Application"</font></div>
<div><font face="Consolas, monospace" size="2"> </font></div>
<div><font face="Consolas, monospace" size="2">This is the easier approach. You would create your own plug-in, equivalent to org.commontk.dah.exampleapp, which contains all your app code (logic, widgets, etc.). Additionally, you create your own ctkExampleHostedApp
executable, which is essentially the same code as in the CTK repository (just adapt paths and plug-in names).</font></div>
<div><font face="Consolas, monospace" size="2"> </font></div>
<div><font face="Consolas, monospace" size="2">The</font></div>
<div><font face="Consolas, monospace" size="2"><a href="http://www.commontk.org/index.php/Documentation/CTK_Plugin_Framework:_Setting_up_a_project?action=purge"><font color="#0000FF"><u>http://www.commontk.org/index.php/Documentation/CTK_Plugin_Framework:_Setting_up_a_project?action=purge</u></font></a></font></div>
<div><font face="Consolas, monospace" size="2">tutorial explains how to create a CTK-based project.</font></div>
<div><font face="Consolas, monospace" size="2"> </font></div>
<div><font face="Consolas, monospace" size="2">2.) You want to use your app both "stand-alone" and as a "hosted app"</font></div>
<div><font face="Consolas, monospace" size="2"> </font></div>
<div><font face="Consolas, monospace" size="2">This involves a little bit more knowledge about the plugin framework, but should also be easy to achieve. What the org.commontk.dah.exampleapp plug-in actually does, is to register a class containing the DICOM
"application logic" as a service within the plugin-framework. You could either create this class (similar as the ctkExampleDicomAppLocig class) inside your current project (not in a separate plug-in) and register an instance by using the plugin framework context,
or create a small plug-in containing this class and taking care of the registration itself. Then start the plugin framework from inside your executable, if you recognize the host and app url command line parameters (otherwise, create a QMainWindow yourself).</font></div>
<div><font face="Consolas, monospace" size="2"> </font></div>
<div><font face="Consolas, monospace" size="2">Depending on how fancy you would like to get concerning the minimization of dependencies of your app in stand-alone mode to the CTK libraries, you could think of a more complex set-up containing two small wrapper
executables, one for "app mode" starting the CTK plugin framework and one for "stand-alone mode", both linked to a library containing your application gui and logic...</font></div>
<div><font face="Consolas, monospace" size="2"> </font></div>
<div><font face="Consolas, monospace" size="2">> 1. I couldn?t find to which QMainWindow is the button attached to</font></div>
<div><font face="Consolas, monospace" size="2">> in the ctkExampleDicomAppLogic::do_something()function.It</font></div>
<div><font face="Consolas, monospace" size="2">> doesn?t look like thectkExampleDicomAppLogic is heritating from</font></div>
<div><font face="Consolas, monospace" size="2">> a widgetalso. Which object is responsible of the creation of the</font></div>
<div><font face="Consolas, monospace" size="2">> mainwindow?</font></div>
<div><font face="Consolas, monospace" size="2">></font></div>
<div><font face="Consolas, monospace" size="2"> </font></div>
<div><font face="Consolas, monospace" size="2">The org.commontk.dah.exampleapp plugin does not create a QMainWindow. It just create a button an shows it (moved and resized to respect the prescribed screen area from the host). In Qt, widgets become top-level
windows if they don't have a parent widget and are "shown".</font></div>
<div><font face="Consolas, monospace" size="2"> </font></div>
<div><font face="Consolas, monospace" size="2">> 1. Is there any doc that explains how to create a CTK plug-in and</font></div>
<div><font face="Consolas, monospace" size="2">> App from scratch. It would be probably better in my case to</font></div>
<div><font face="Consolas, monospace" size="2">> create a new plugin instead of editing an existing one.</font></div>
<div><font face="Consolas, monospace" size="2">></font></div>
<div><font face="Consolas, monospace" size="2"> </font></div>
<div><font face="Consolas, monospace" size="2">There is no doc about creating a plug-in yet, but you can easily create one by using the ctkPluginGenerator executable (you may have to enable it in CMake). It might have some rough edges though...</font></div>
<div><font face="Consolas, monospace" size="2"> </font></div>
<div><font face="Consolas, monospace" size="2">A CTK "app" is actually nothing special. Any executable can do, which links to the CTK libraries. The tutorial linked above explains how to use the plugin framework in an arbitrary executable.</font></div>
<div><font face="Consolas, monospace" size="2"> </font></div>
<div><font face="Consolas, monospace" size="2"> </font></div>
<div><font face="Consolas, monospace" size="2">> 1. How can I add additional includes directories through a</font></div>
<div><font face="Consolas, monospace" size="2">> CMakeLists in the CTK framework. I couldn?t find a way to</font></div>
<div><font face="Consolas, monospace" size="2">> define additional directories in the CMakeList of a plug-in (no</font></div>
<div><font face="Consolas, monospace" size="2">> include_directories). Is that define somewhere else?</font></div>
<div><font face="Consolas, monospace" size="2">></font></div>
<div><font face="Consolas, monospace" size="2"> </font></div>
<div><font face="Consolas, monospace" size="2">Inside CTK itself, include directories are set-up auto-magically through our custom CMake dependency system. If you need to use external libraries in your own CTK plug-in (contained in your own project), just use
standard CMake INCLUDE_DIRECTORIES (before calling the ctkMacroBuildPlugin macro) and LINK_LIBRARIES(${PROJECT_NAME} ...) (after the ctkMacroBuildPlugin call) commands.</font></div>
<div><font face="Consolas, monospace" size="2"> </font></div>
<div><font face="Consolas, monospace" size="2">Happy coding,</font></div>
<div><font face="Consolas, monospace" size="2"> </font></div>
<div><font face="Consolas, monospace" size="2">Sascha</font></div>
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