security - Is HWND unique among a window station? -

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assume created 2 desktops d1 , d2 in winsta0, , d2 has window b.

my question is:

can thread belonging d1 window b's caption text through getwindowtext(hwnd b, ....)?

the hierarchy session => window station => desktop => thread => window. session important when work service, run in isolated session 0. every session has @ least winsta0 interactive window station. session 0 has additional ones services.

a window station has multiple desktops, @ least default desktop interact , winlogon desktop, secure 1 that's used login , screen savers. plus additional ones create, d2 desktop.

a desktop has single desktop heap window objects stored. every hwnd unique in heap. you'll need getthreaddesktop() hop in hierarchy , go known thread desktop on creates windows. enumdesktopwindows() toplevel windows owned desktop.

getting thread id obstacle, you'll need @ least know process. can enumerate threads owned process with, say, createtoolhelp32snapshot().

that gets desktop handle. getwindowtext can work d1 handles, you'll need call setthreaddesktop() switch d2.


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