I think this sounds very simple and trivial but as I'm getting nowhere with google, I'm asking for help:
I need a form to pop up when I click a button inside a 'main' form.
I have a Ext.form.Panel as main GUI component
inside it, there is a button.
This button handler tries to create a Ext.Window
But I get the following message when I click that button:
Uncaught Ext.panel.Table.initComponent(): A column configuration must be specified
The error points to the line calling the method that creates the Ext.Window
I'm kinda lost here, does someone has a hint about how to properly open a modal form (Panel, window, whatever) when clicking a button?