问题
ITaskbarList3 interface provides only setter methods. Is there a way to get the information (like HWND list of the tabs) for a specific taskbar entry?
回答1:
No that's not possible through the taskbar API. The system has been designed with the intention that you'll only work on taskbar buttons that you own. In which case there's no need for getters since you can remember for yourself what value you last passed to a setter, should you need to.
来源：https://stackoverflow.com/questions/6330355/get-itaskbarlist3-data-of-specific-window