问题
How do I find which Windows process is displaying a given taskbar system tray icon?
回答1:
Shell_NotifyIcon works by sending a special WM_COPYDATA message to the taskbar, if you inject into explorer and subclass the taskbar you could catch this message, you could then get the process id by calling GetWindowThreadProcessId on COPYDATAstruct.NOTIFYICONDATA.hwnd.
...and of course, this is a hack and relies on undocumented information that could change at any time!
回答2:
I've just realised that in Windows 7 the 'Select which icons and notifications appear on the taskbar' menu helps a bit here. Find it by right-clicking the taskbar, go to 'Properties', then click the 'Customize...' button in the 'Notification area' frame.
Each row in that window represents a taskbar icon that Windows Explorer has seen. Of the left two rwos, I believe the top one is the process's description as shown in Task Manager, and the bottom one is the window title for the window showing the taskbar icon.
This would've helped me track down my original problem! VisualSVN was popping up a 'Register me!' nag window in the system tray, despite no obvious VisualSVN processes running. Eventually I noticed that this nag window disappeared when I closed Visual Studio, so it was clear that the VisualSVN add-in DLL loaded in Visual Studio was creating the nag window.
回答3:
I don't believe this to be possible. Certainly Spy++ reports that the Notification area is a single window named "User Promoted Notification Area". This window is ultimately parented with the desktop window and has no obvious association with the process that created the notification icon.
Well, by possible I mean possible without resorting to hacks like Anders suggests which is no doubt feasible, but not what I imagine the OP is looking for!
来源：https://stackoverflow.com/questions/5166551/which-windows-process-is-displaying-a-given-taskbar-system-tray-icon