In step 1 of the tutorial (http://docs.mitk.org/nightly/Step01Page.html) is a description of how to display an image via Visual Studio. Is there any instruction to do this with Qt-Creator?
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AFAIK there is no special tutorial for QtCreator. The code should be the same, as it should (like MITK in general) work on both platforms.
In QtCreator, you select the project you want to build in the lower left corner where the "green play buttons" are.
For your specific question, you need to add cmd arguments when starting the project. Here is a stackoverflow post on how to do that, hope that helps: https://stackoverflow.com/questions/1593288/qtcreator-and-command-line-arguments