Auto-expanding layout with Qt-Designer

Question

I m using the Qt Designer   I want to create a QVBoxLayout which will automatically expand to fill the whole window   The layout of the QVBoxLayout remains fixed   How can I cause the QVBoxLayout to expand and fill the entire window through the designer

User · Answer

I ve tried to find a  fit to screen  property but there is no such   But setting widget s  maximumSize  to a  some big number    like 2000 x 2000   will automatically fit the widget to the parent widget space

User · Answer

After creating your QVBoxLayout in Qt Designer  right-click on the background of your widget dialog window  not the QVBoxLayout  but the parent widget  and select Lay Out -  Lay Out in a Grid from the bottom of the context-menu  The QVBoxLayout should now stretch to fit the window and will resize automatically when the entire window is resized

User · Answer

According to the documentation  there needs to be a top level layout set      A top level layout is necessary to ensure that your widgets will resize correctly when its window is resized  To check if you have set a top level layout  preview your widget and attempt to resize the window by dragging the size grip    You can set one by clearing the selection and right clicking on the form itself and choosing one of the layouts available in the context menu

User · Answer

Set the horizontalPolicy  amp  VerticalPolicy for the controls widgets to  Preferred

User · Answer

Once you have add your layout with at least one widget in it  select your window and click the  Update  button of QtDesigner  The interface will be resized at the most optimized size and your layout will fit the whole window  Then when resizing the window  the layout will be resized in the same way

[qt] Auto-expanding layout with Qt-Designer

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