I want to create a multiple selection box (like you can see when you click on the processing saga tool "Merge vector layers") with the Qt Designer.
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Your question is very broad, can you narrow the focus? What specific aspect do you need help with? What have you tried? – artwork21 Sep 27 '16 at 12:28
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I'm writing my 1st python script. The thing is that I have more than one vector layer to select (for further data processing). I was able to create a selecting box (just for one layer) on the Qt designer. Now I trying to find a way to create (or maybe coding with python) a multi selection box like you can see in the screenshot. – Pimpel Sep 27 '16 at 12:32
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In QT you may use the QList Widget. There are various selection options under selectionMode setting you may pick from to enable mutli text selection, see graphic below:
For selecting features or all features in a layer you first need to create QGIS Vector layer that references the layer on disk or in a database, and then perform the selection query. There are many posts on this site and others (search for pyqgis create vector layer, pyqgis select layer or select feature).
artwork21
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OK I found this. But I cannot figure out how to get all layers (point layers) inside the box. I changed the pic in my question box. – Pimpel Sep 27 '16 at 12:45
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1If the layers are in a map already you can loop through the layers in the layer panel and add the layer name text to the widget. I would recommend first learning how to add any text to the widget and then how to get all layer names in a map. If you have a specific question about coding you will need to post what you've tried in your question and note where you are stuck before others can assist. – artwork21 Sep 27 '16 at 12:52
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The layers I want to select are already given in QGis. I have to open them manually. These layers should be selectable in the multi selection box. – Pimpel Sep 27 '16 at 12:54