Spy++ is a Win32-based utility that gives you a graphical view of the system’s processes, threads, windows, and window messages.

Spy++ lets you perform the following tasks:

• Display a graphical tree of relationships among system objects. These include processes, threads, and windows.

• Search for specified windows, threads, processes, or messages.

• View the properties of selected windows, threads, processes, or messages.

• Select a window, thread, process, or message directly in the view.

• Use the Finder Tool to select a window by mouse pointer positioning.

• Set message options by using complex message log selection parameters.