VTV Manipulation Project

• fix some bugs
• implemented delete action from table price

• implemented tree modification and saving of results

• all virtual tree events are set in the code at runtime

• allow dragging only those nodes that are not in the database
• implemented verification of added records for uniqueness in the tree and database

• fix some bugs

• added the IsPickedNode public property to distinguish the value selected from the list from the newly entered one

• redundant functionality is limited (rejection of d'n'd)
• implemented a list of possible selection of items for parent and child nodes when filling in the tree

• it is prohibited to change the names of existing price list items
• added functionality for adding/editing price list

• own rendering of the VTV header implemented on HeaderDraw event instead of AdvancedHeaderDraw event
• implemented showing/hiding "deleted" nodes

• implemented own rendering of the VTV header

• implemented node highlighting with updated prices

• implemented the ability to set the cost as zero

• moved nodes now get the ParentID as the PriceID of the new root node.

• fixed some bugs for addRoot/addChild/EditNode actions
• added new items for popup menu

• added popupMenu + actions to expand/collapse nodes

• implemented all the main actions to update nodes

• implemented actions to remove/restore a node

• implemented node editing actions

• added actions for node editing
• added checking the state of node editing buttons

• implemented mechanism of d'n'd