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grunau authored
The QtCanvas class didn't previously implement the sizeHint method. As a result, Qt would allot it no display space if there were other widgets competing for it (e.g. the main window's central widget). Now QtCanvas has a sizeHint implementation that returns a size hint that is in line with what the canvas' getSize method reports. Moreover, QtCanvas now uses the `Expanding` size policy to inform Qt that it would like to get as much display space as possible. git-svn-id: https://camplinux.in.tum.de/svn/campvis/branches/gui-redux@519 bb408c1c-ae56-11e1-83d9-df6b3e0c105e
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