88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
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/****************************** Module Header ******************************\
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* Module Name: clhook.c
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* Copyright (c) 1985 - 1999, Microsoft Corporation
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* Client-side hook code.
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* 05-09-1991 ScottLu Created.
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* 08-Feb-1992 IanJa Unicode/ANSI
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*/
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#include "precomp.h"
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#pragma hdrstop
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/*
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* Client side routine for SetWindowsHookEx().
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* Needs to remember the library name since hmods aren't global.
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* Remembers the hmod as well so that it can be used to calculate pfnFilter in different process contexts.
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* History:
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* 05-15-91 ScottLu Created.
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*/
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HHOOK SetWindowsHookExAW(int idHook, HOOKPROC lpfn, HINSTANCE hmod, DWORD dwThreadID, DWORD dwFlags)
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{
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WCHAR pwszLibFileName[MAX_PATH];
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/*
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* If we're passing an hmod, we need to grab the file name of the module while we're still on the client since module handles are NOT global.
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*/
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if (hmod != NULL) {
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if (GetModuleFileNameW(hmod, pwszLibFileName, sizeof(pwszLibFileName)/sizeof(TCHAR)) == 0) {
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/*
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* hmod is bogus - return NULL.
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*/
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return NULL;
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}
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#ifdef WX86
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try {
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if (RtlImageNtHeader(hmod)->FileHeader.Machine == IMAGE_FILE_MACHINE_I386) {
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dwFlags |= HF_WX86KNOWNDLL;
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}
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} except (W32ExceptionHandler(FALSE, RIP_WARNING)) {
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return NULL;
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}
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#endif
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}
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return _SetWindowsHookEx(hmod, (hmod == NULL) ? NULL : pwszLibFileName, dwThreadID, idHook, (PROC)lpfn, dwFlags);
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}
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/*
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* SetWindowsHookA,
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* SetWindowsHookW
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* ANSI and Unicode wrappers for NtUserSetWindowsHookAW(). Could easily be macros instead, but do we want to expose NtUserSetWindowsHookAW() ?
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* History:
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* 30-Jan-1992 IanJa Created
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*/
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HHOOK WINAPI SetWindowsHookA(int nFilterType, HOOKPROC pfnFilterProc)
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{
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return NtUserSetWindowsHookAW(nFilterType, pfnFilterProc, HF_ANSI);
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}
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HHOOK WINAPI SetWindowsHookW(int nFilterType, HOOKPROC pfnFilterProc)
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{
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return NtUserSetWindowsHookAW(nFilterType, pfnFilterProc, 0);
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}
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/*
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* SetWindowsHookExA,
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* SetWindowsHookExW
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* ANSI and Unicode wrappers for SetWindowsHookExAW().
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* Could easily be macros instead, but do we want to expose SetWindowsHookExAW() ?
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* History:
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* 30-Jan-1992 IanJa Created
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*/
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HHOOK WINAPI SetWindowsHookExA(int idHook, HOOKPROC lpfn, HINSTANCE hmod, DWORD dwThreadId)
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{
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return SetWindowsHookExAW(idHook, lpfn, hmod, dwThreadId, HF_ANSI);
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}
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HHOOK WINAPI SetWindowsHookExW(int idHook, HOOKPROC lpfn, HINSTANCE hmod, DWORD dwThreadId)
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{
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return SetWindowsHookExAW(idHook, lpfn, hmod, dwThreadId, 0);
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}
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