column

A column is a dcl container with vertical orientation: it places all its child tiles below each other, from top to bottom.
Note: if a horizontal alignment of a column and sibling child tiles with uniform space distribution is desired, it is required to enable the fixed_width attribute for the column tile. Otherwise, the column occupies more space. Naturally, the column and its siblings should be placed into a row container.

related attributes

These attributes are predefined for cluster tiles only:
- children_alignment, children_fixed_height, children_fixed_width
- These attribute will set the default value of the alignment, fixed_height or fixed_width attribute of the children of this cluster. The possible values are the same as for the respective attributes. If the respective attribute is also specified in a child of this container, the value specified in the child definition will be used. Mind that this attribute is not applied recursively: the default alignment value is only applied to the immediate children, not to the grand children.
- boxed
- This attribute controls the appearance of a surrounding line or box. A column with a non-empty label attribute will also appear with a surrounding line, interrupted by the displayed label at the top-left of the column. A predefined clusters containing boxed in its name has the attribute boxed with value true.
These attributes are predefined for every tile and consequently for a column as well:
- key
- value
- The attribute "value" makes sense for a column only if it contains radio_button tiles. The value of a column is the key of the currently selected radio_button it contains. If the column does not contain any radio_button, an empty string will returned.
- tooltip
- label
- A column with a non-empty label attribute appear with a surrounding line, interrupted by the displayed label at the top-left of the column. If the label attribute of a column tile is not empty, the attribute boxed will be overruled.
- fixed_height
- fixed_width
- alignment
- width
- bcad_width
- height
- bcad_height
- is_enabled

callbacks

A column can send a callback only if it contains one or more radio_buttons. On selection of a contained radio_button, a column will send a callback with reason CBR_SELECT. See action_tile for more on callbacks.