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116 lines
2.6 KiB
C
116 lines
2.6 KiB
C
/*
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* Copyright 2004 Martin Fuchs
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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//
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// NotifyHook DLL for ROS Explorer
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//
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// notifyhook.cpp
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//
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// Martin Fuchs, 17.03.2004
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//
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#include "../utility/utility.h"
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#include "notifyhook.h"
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static HINSTANCE s_hInstance;
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static UINT WM_GETMODULEPATH;
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static HHOOK s_hNotifyHook;
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BOOL APIENTRY DllMain(HINSTANCE hInst, DWORD dwReason, LPVOID param)
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{
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switch(dwReason) {
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case DLL_PROCESS_ATTACH:
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s_hInstance = hInst;
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DisableThreadLibraryCalls(hInst);
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WM_GETMODULEPATH = RegisterWindowMessageA("WM_GETMODULEPATH");
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break;
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}
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return TRUE;
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}
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struct COPYDATA_STRUCT {
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HWND _hwnd;
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int _len;
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char _path[MAX_PATH];
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};
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LRESULT CALLBACK NotifyHookProc(int code, WPARAM wparam, LPARAM lparam)
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{
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MSG* pmsg = (MSG*)lparam;
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if (pmsg->message == WM_GETMODULEPATH) {
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struct COPYDATA_STRUCT cds;
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COPYDATASTRUCT data;
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cds._hwnd = pmsg->hwnd;
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cds._len = GetWindowModuleFileNameA(pmsg->hwnd, cds._path, COUNTOF(cds._path));
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data.dwData = WM_GETMODULEPATH;
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data.cbData = sizeof(cds);
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data.lpData = &cds;
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SendMessage((HWND)pmsg->wParam, WM_COPYDATA, (WPARAM)pmsg->hwnd, (LPARAM)&data);
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return 0;
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}
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return CallNextHookEx(s_hNotifyHook, code, wparam, lparam);
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}
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UINT InstallNotifyHook()
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{
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s_hNotifyHook = SetWindowsHookEx(WH_GETMESSAGE, NotifyHookProc, s_hInstance, 0);
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return WM_GETMODULEPATH;
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}
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void DeinstallNotifyHook()
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{
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UnhookWindowsHookEx(s_hNotifyHook);
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s_hNotifyHook = 0;
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}
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void GetWindowModulePath(HWND hwnd)
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{
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SendMessage(hwnd, WM_GETMODULEPATH, 0, 0);
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}
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// retrieve module path by receiving WM_COPYDATA message
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DECL_NOTIFYHOOK int GetWindowModulePathCopyData(LPARAM lparam, HWND* phwnd, LPSTR buffer, int size)
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{
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PCOPYDATASTRUCT data = (PCOPYDATASTRUCT) lparam;
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if (data->dwData == WM_GETMODULEPATH) {
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struct COPYDATA_STRUCT* cds = (struct COPYDATA_STRUCT*) data->lpData;
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*phwnd = cds->_hwnd;
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lstrcpyn(buffer, cds->_path, size);
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return cds->_len;
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} else
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return 0;
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}
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