Calling the base class

[henux]

Hi.

Is it possible to call the base class method from an overloaded virtual method somehow? Such as,

foo = QTextEdit()
function foo:keyPressEvent(e)
    -- do something
    super.keyPressEvent(e)
end

This would be necessary for overloading some event handlers.

Also, binding the global namespace enums somehow would be useful. Such as,

function foo:keyPressEvent(e)
    if e:key() == Qt.Key_Enter then
        -- enter was pressed
    end
end

[mkottman]

I have fought with the need to call super virtual methods too, however I found no clean and concise way of doing it (I would also need to export protected virtual functions, which I could do, but do not want to).

Currently, you can use this to call the virtual method with original parameters:

function foo:keyPressEvent(e)
    -- do something
    error(SUPER) -- not nice, but...
end

As for the second point, you have to look a bit deeper:

function foo:keyPressEvent(e)
    if e:key() == Qt.Key.Key_Enter then
        -- enter was pressed
    end
end

That means you have to enter the enum name between Qt and value. I use the following function to quickly find an enum I'm looking for:

function findEnum(name)
    name = name:lower()
    require 'qtcore'
    require 'qtgui'
    for k,v in pairs(Qt) do
        for kk,vv in pairs(v) do
            if type(kk) == 'string' and kk:lower():match(name) then
                print('Qt.' .. k .. '.' .. kk .. ' = ' .. vv)
            end
        end
    end
end