Monitor open windows and display information about pending messages or threads.
MsgHookLister is a tool that outputs information about windows and their threads, including details of pending messages such as what they are, who sent them, when, and by which method. Associated Win32 thread state is also reported such as if PostQuitMessage has been called and with what value, if any WM_PAINT, WM_TIMER or WM_QUIT messages are to be generated, and the thread flags.