SetWindowsHookEx from static library

Asked May 13 '16 at 14:30

Active May 13 '16 at 14:36

Viewed 222 times

I'm trying to install a hook to intercept mouse and keyboard from a library to an executable. If I build the library as a Dynamically Loaded Library everything works fine, but when the I build the library as a static library it doesn't work.

To install the hook I do like this:

Get the library module handle with this function

HMODULE GetCurrentModule()
{
    return reinterpret_cast<HMODULE>(&__ImageBase);
}

Install the hook

HMODULE module = GetCurrentModule();
_windowsProcHook = SetWindowsHookEx(WH_CALLWNDPROC, WindowsProcCallback, module, NULL);

I've debugged the code and I've seen that when a build as a DLL, the module I get from GetCurrentModule is the correct one (from the DLL) but when I build as a static library GetCurrentModule returns the module of my executable.

edited May 13 '16 at 14:36

asked May 13 '16 at 14:30

zeb

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A Windows module is an executable or dll. A static library provides some code and/or data for a module. – Cheers and hth. - Alf May 13 '16 at 14:34
OK, but is there a way to install a hook from a static library? – zeb May 13 '16 at 14:35
3

This is entirely normal. You **must** build it as a DLL if you want to set that hook, required so the DLL can be injected into the target process(es). You cannot inject an EXE. – Hans Passant May 13 '16 at 14:40
Well, you pass `NULL` as thread id, which means you want a global hook. That requires a DLL. – Cheers and hth. - Alf May 13 '16 at 14:42
All right, so I could install the hook from the static library if I have the thread id right? – zeb May 13 '16 at 14:45
Can `GetCurrentThreadId` do the work? (only if building static library) – zeb May 13 '16 at 14:48

SetWindowsHookEx from static library

0 Answers0