2. Dragging and pasting columns

Dragging columns inside grid and between grids and copying & pasting columns via clipboard

• Example description

  
  
  • Move column with children by dragging by left mouse button, copy column by dragging by shift+right mouse button, copy column with children by dragging by ctrl+right mouse button. Select more columns (by panel column panel button) and drag them together.
  • There are three column types (default columns), NODE, ITEM and SUBITEM. The NODE can contain only ITEM. The ITEM can contain ITEM and SUBITEM. The SUBITEM can contain only SUBITEM.
  • New child in NODE is ITEM. New child in ITEM is SUBITEM. New child in SUBITEM is SUBITEM.
  • The Tree and Nodes grids can contain all columns (NODE, ITEM, SUBITEM), root columns are NODE. The Items grid can contain ITEM and SUBITEM columns, root columns are ITEM. The Subitems grid does not accept new columns.
  • Columns dragged from Tree, Nodes and Items grids are moved (or copied if dragged by right or middle mouse button) and columns dragged from Subitems grid are always copied.
  • Columns are copied to clipboard always with children, preserves their tree structure and default columns.
  • To Tree are pasted columns fully with tree, before focused or in children of focused depending on default column of the copied columns.
  • To Nodes and Items are pasted only with appropriate default columns, NODE or ITEM, always before focused column.
  • All the grids share the same undo queue to correctly undo / redo the moves between grids.

• Dragging

  
  Dragging columns in grid can be controlled by Cfg

  DraggingCols

  , it can permit or restrict dragging inside row part, between parts, between parts, etc.
  By which cell can be column caught and dragged is set by row attribute

  UseMove

  , by default set in row D: Header / Index.
  Dragging columns can be more controlled by Cfg

  MoveColTypw

  and in tree by Cfg

  MoveColTree

  . The column tree must be permitted by Cfg

  ColTree

  .
  To drop column(s) from another grid there must be set also Cfg

  AddingCols

  to 2 or 3 in the destination grid.
  To drag and move column(s) to another grid there must be set also Cfg

  DeletingCols

  in the source grid.
  

• Dropping permissions

  
  Dropping permissions are specified by parent column or column part

  Accept

  attribute. It specifies which columns can be dropped to children of the column or column part.
  The columns for the Accept are identified by column attribute

  DragId

  . By default all columns have set DragId = "Col and Accept = "Col".
  The Accept and DragId are usually set in column default, aassigned to column by

  D

  or parent

  CD

  attribute.
  

• Copying columns to clipboard

  
  To copy whole columns to clipboard set

  Copying

  = 3 and restrict row selection by

  SelectingRows

  = 0 and permit column selection by

  SelectingCols

  = 1
  To copy required information for pasting restrictions use Cfg attribute

  CopyStyles

  with values like D or L. And set also

  CopyHtml

  = 1.
  In tree is possible to copy also parents and / or children of selected / focused columns adding Parent or Children to Cfg

  CopyPasteColsType

  .
  

• Pasting columns from clipboard

  
  To add new columns by pasting from clipboard, set Cfg

  PasteFillCols

  = 0,

  PasteAddCols

  = 2,

  PasteFillRows

  = 3 and optionally

  PasteFillSingle

  = 0.
  To use information copied for pasting restrictions use Cfg attribute

  PasteStyles

  with values like D or L. And set also

  PasteHtml

  = 1.
  To more control which columns are where pasted, use API event

  OnPaste

  , here is possible to move or delete the newly added columns.