Visual Studio 2017: use IProjectTreePropertiesProvider
Item template: Project Tree Modifier extension
The IProjectTreeModifier interface can be exported into the
UnconfiguredProject scope to apply cosmetic changes to a project tree
or one of its nodes. IProjectTreeModifier.ApplyModifications is called back
for every visible and non-visible node in the tree.
This allows you to, for example, set the icon on your project's root node to be consistent with your branding. You can also set the icons on specific source items that are may be unique to your project type.
Do NOT use this to modify the structure of the tree. Adding, removing, or moving nodes in the tree in a modifier will most likely cause malfunctions in the project system.
To change a node based on its logical position
within the tree (for example, the special My Project folder within Visual
Basic projects), your modifier should act on the children of the project root
(ie when the specified tree has a capability of ProjectTreeCapabilities.ProjectRoot).
This is because tree modifiers are called to update existing and to initialize new nodes.
For new nodes, there is way to know where it will fit logically into the tree, until it's been
actually added to the tree.
You can create an IProjectTreeModifier export using the "Project Tree
Modifier extension" item template included in the CPS SDK.
IProjectTreeModifier implementations can also implement (but not export)
IProjectTreeModifier2 to be passed the original tree before the latest
mutation, so that it can determine what a previous tree modifier changed.
This can prevent multiple modifiers from updating the same
properties repeatedly. If a tree modifier implements this interface,
IProjectTreeModifier2.ApplyModifications will be called instead of
IProjectTreeModifier.ApplyModifications.