delete-selected-subsections

Arguments: grid-widget &key (confirm t)

Conditionally deletes the grid-rows and grid-columns of grid-widget (which must be an instance of grid-widget) that are both deletable and selected. If confirm is true (the default), then confirm-grid-subsection-deletion is called, and the deletion is done only if that overridable generic function returns true. If confirm is nil, then the deletion is always done. The return value is the list of subsections that were deleted; this is nil if no subsections were selected or if the user canceled the confirmation dialog.

There is a delete-selection method for grid-widgets that calls delete-selected-subsections, so an application could call either. In the IDE, the Edit | Delete ommand calls delete-selection, so its keyboard shortcut (the Delete key) will call this function automatically. A standalone application would need to call this function in its own way instead.

Alternately, delete-row and/or delete-column can be called to delete individual rows and columns regardless of their state, and (setf subsections) can be called to replace the whole set of rows or columns. delete-selected-subsections calls delete-row or delete-column to delete each subsection, so an application's wrapper methods on those generic functions would catch deletions that are done in either way.

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This page was not revised from the 10.0 page.
Created 2019.8.20.