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Applies to: 
Visual Studio 
Visual Studio for Mac
Note
This article applies to Visual Studio 2017. If you're looking for the latest Visual Studio documentation, see Visual Studio documentation. We recommend upgrading to the latest version of Visual Studio. Download it here
You can expand and collapse the Windows, Processes, and Threads views using two methods: by clicking on the icons in the window or by using the Tree menu. The + and - icons in the tree act as they do in the C++ project window.
The Tree menu contains four commands:
| Menu Command | Description |
|---|---|
| Expand One Level | Expands the currently selected item to the next level. |
| Expand Branch | Fully expands the currently selected item. |
| Expand All | Fully expands all items in the window. |
| Collapse | Fully collapses the currently selected item. |
Tip
If you expand a process, you see all the threads the process owns. If you expand a thread, you see a list of all the windows it owns.
To expand or collapse Spy++ trees
Highlight one of the items in the Windows, Processes, or Threads view.
From the Tree menu, choose one of the expand or collapse commands.