Navigate from a process to it's parent

Question

Hello,

I'm stuck with the process model of IE8, where a GetWindowThreadProcessId() for my MFC embedded window will give me a child IE PID, as the GetWindowThreadProcessId() for my container page will give me the root IE PID.

Which is bad, as I want to filter my container out, while enumerating windows.

So I'm looking for a way to get the PID of the parent of a given process, so as to get, from my MFC app, the root IE PID.

Sysinternals' ProcessExplorer knows how to do that, displaying processes in treeview, so I'm sure there's a way to achieve that.

Answer 1

Have you seen this codeproject article or this codeguru article?

I think the better method is in the codeguru article.

Basically you want the "ULONG InheritedFromUniqueProcessId" member of PROCESS_BASIC_INFORMATION. See NtQueryInformationProcess and this page.

Answer 2

use ToolHelp32 functions http://support.microsoft.com/kb/192986 and sort their as tree.

But if you have embeded window, maybe your code in IE process? what type of embeding are you use, ocx or dll?