If the QMainWindow is too small to show the whole of the extension for the QToolBar then it simply gets cut off

If the QMainWindow is too small to show the whole of the extension for the QToolBar then it simply gets cut off

Update: There's no out-of-the-box solution to this; if there's too little room then QMainWindow and QToolBar are unable to represent the contents efficiently. We'll have to schedule this for Qt 4.4, because fixing it has a high likelihood of involving architectural changes or API changes.

Update2: The extended toolbar now tries to be square, rather than tall and thin, or short and wide. This reduces the likelyhood of running off the edge of the main window.

Update3: It is fixed in Qt 4.4. The extension will be shown in a popup if the main window is too small. Note that QWidgetAction that have only a defaultAction will not be shown in that menu.

Update4: Reopened because the popup will not show if the mainwindow is too small, the extension and the down arrow is disabled in this case