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Line :: expanded - Expanded property

In a tree, an item which has got sub items, might be expanded or collapsed. The property is true , when sub items are visible (expanded) and false , when sub-items are hidden.

Return value:  State of function return ( bool  )

A State true indicates, that the function was executed successfully. Otherwise state is false .

Implementation overview

Implementation details

  1. Get expanded state
    bool Line  :: expanded (  )

    The function returns, whether an item is expanded ( true ) or not ( false ). When no list item is attached to the line, the function throws an exception.

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  3. Change expanded state
    bool Line  :: expanded ( bool bState )

    When passing true in bState , the the attached list item will be expanded and sub items become visible. When passing false in bState , the item collapse and sub items become invisible.

    When no list item is attached to the line, the function throws an exception.

    • bState - State of function return

      A State true indicates, that the function was executed successfully. Otherwise state is false .

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