Question

I have the following test code:

require 'Qt'
app = Qt::Application.new( ARGV )
wnd = Qt::Widget.new
layout = Qt::VBoxLayout.new( wnd )
splitter = Qt::Splitter.new( layout )

That fails in last line with strange error:

'initialize': unresolved constructor call Qt::Splitter (ArgumentError)

I have checked the Qt::Splitter API via rbqtapi, it has constructor that takes one Qt::Widget argument. What’s wrong with that code?

Answer 1

layout is of type VBoxLayout, which is no base class of QWidget and thus cannot be used where an argument of type QWidget is expected. Guessing based on my experience with Qt in C++ and Python, I’d say you have to use:

splitter = Qt::Splitter.new(wnd)
layout.addWidget(splitter)