Hi everybody,

In the context menu of some objects, I can choose "properties"; then a window opens in order to set properties of the object.
is there a way to write such a properties interface for external objects?

Best regards and wishes for next Christmas holidays
BB

You have to use the function class_setpropertiesfn(). I suggest you to have a look at the objects that use this functionality. For example the gatom or bang.

I used the class class_setpropertiesfn() and I tried to follow the examples, but I get "segmentation fault" when I click on properties.
What can I do to solve the problem?

In Purr Data I went ahead and made a generic interface for this called gui_external_dialog. You basically just send a bunch of name/value pairs and it automatically generates the dialog. That way there's no need to write GUI code to handle the dialog.

It looks like it currently handles symbols, numbers, and toggles. Colors would be pretty easy to add.

@satsriakal Yes, you have to set up the properties window with tcl/tk. It can be a bit tricky in C. There must be a mistake in your code. If you can, you should share your code it would help us to help you.