Method HasSelection

tutorials/common/imgui/imgui.h:2098–2098

    void                SelectAll()             { SelectionStart = 0; SelectionEnd = BufTextLen; }
    void                ClearSelection()        { SelectionStart = SelectionEnd = BufTextLen; }
    bool                HasSelection() const    { return SelectionStart != SelectionEnd; }
};

// Resizing callback data to apply custom constraint. As enabled by SetNextWindowSizeConstraints(). Callback is called during the next Begin().