Accessing MetaWindow.get_xwindow from js

[Matthijs Kooijman <matthijs stdin nl>]

Hey folks,

after digging around with extension js code for a while, I found
that a lot of the native API is "documented" in gir files. In
particular, I was looking at /usr/lib/mutter/Meta-3.0.gir here.

However, I couldn't manage to access the get_xwindow method on the
MetaWindow class. In the gir file, it says:

      <method name="get_xwindow"
              c:identifier="meta_window_get_xwindow"
              introspectable="0">
        <return-value transfer-ownership="none">
          <type name="xlib.Window" c:type="Window"/>
        </return-value>
        <parameters>
          <instance-parameter name="window" transfer-ownership="none">
            <doc xml:space="preserve">a #MetaWindow</doc>
            <type name="Window" c:type="MetaWindow*"/>
          </instance-parameter>
        </parameters>
      </method>

However, when I run this in the looking glass, it gives an "is not a function"
error.

        win = global.get_window_actors()[0].metaWindow;
        win.get_xwindow();

I suspect this is related to the introspectable="0" attribute, but I can't quite figure out how this works.

It seems essentially the same question was asked on the gtk list two
years ago, with no replies. http://marc.info/?l=gtk&m=133003907121583&w=2

Any idea?

Gr.

Matthijs

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