Hello @Hongzz,

Welcome to the Maxon developers forum and its community, it is great to have you with us!

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About your First Question

When removing all the path handling fluff from your code, everything works as expected (the layout is created properly, when runs from both "Execute" button and the menu item). Please check the attached script below.

This actually means that there's something fishy going on with the files on your filesystem or the way you're dealing with them. I'd suggest improve handling edge cases, when the path doesn't exist or when there're no files in the specified path.

There're a couple more comments on your posting.

First of all, storing your dialog in the global scope of the script is a "hack" that is a) highly not recommended in general b) exceptionally not recommended for being shipped to the end user. You should consider developing a plugin instead, if you need your dialog to be persistent over multiple openings of your dialog. You can have a look into our github repository for some references, e.g. the CommandDataDialog example.

Secondly, please consolidate your consequent messages in a single posting as it improves the readabily of the forum (please check the "Support Topic Rules" part of our Support Procedures). For your previous message I've already done this for you.

Cheers,
Ilia

The code snippet without unnecessary path handling parts:

import os import c4d class ImportDialog(c4d.gui.GeDialog): BUTTON_ID_BASE = 1000 def __init__(self): self.files = ['myFile1.c4d', 'myFile2.c4d', 'myFile3.c4d'] def CreateLayout(self): self.SetTitle("Import C4D Projects") for index, file in enumerate(self.files, start=self.BUTTON_ID_BASE): filename = os.path.splitext(os.path.basename(file))[0] self.AddButton(index, c4d.BFH_CENTER, name=filename) return True global_dialog_instance = None def main(): global global_dialog_instance if global_dialog_instance is None: global_dialog_instance = ImportDialog() global_dialog_instance.Open(c4d.DLG_TYPE_ASYNC, defaultw=400, defaulth=50) if __name__=="__main__": main()