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ab19e8ed32
This container always lays out child widgets in a horizontal
row, where the number of columns is automatically determined
by the number of child widgets.
It's useful for creation of compact forms, where no space will
be wasted by assigning extraneous horizontal width to widgets
where the expected values will always be short.
Eg: creating 3 rows with 3, 2, 1 child widgets respectively
results in the layout:
Attr 1: [...] Attr 2: [...] Attr 3: [...]
Attr 4: [..........] Attr 5: [..........]
Attr 6: [...............................]
Without the option of row containers then the all horizontal
rows will have the same number of columns, eg:
Attr 1: [...] Attr 2: [...] Attr 3: [...]
Attr 4: [...] Attr 5: [...] Attr 6: [...]
(leaving insufficient horizontal length for attributes 4-6), or
Attr 1: [..........] Attr 2: [..........]
Attr 2: [..........] Attr 3: [..........]
Attr 4: [..........] Attr 5: [..........]
Attr 6: [..........]
(resulting in wasted horizontal space next to attribute 6, and
an extra row taking up vertical space)
Sponsored by NIWA