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protected function ToggleVisibility(columnIndex: int): void;
protected void ToggleVisibility(int columnIndex);


columnIndex Toggle visibility for this column.


Method for toggling the visibility of a column.

This is also called from the context menu of the MultiColumnHeader. This method toggles the visiblity state, calls ::ef::OnVisibleColumnsChanged which in turn dispatces the visibleColumnsChanged event.

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