C / C++ / MFC

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// HookEg.cpp : Defines the initialization routines for the DLL.<br />
//<br />
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#include "stdafx.h"<br />
#include "HookEg.h"<br />
#include "HookCommon.h"<br />
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#ifdef _DEBUG<br />
#define new DEBUG_NEW<br />
#undef THIS_FILE<br />
static char THIS_FILE[] = __FILE__;<br />
#endif<br />
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#pragma data_seg(".SHARED")<br />
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HHOOK hookid = 0; // id of the created Hook <br />
HINSTANCE mod =NULL; // DLL module <br />
HOOKPROC proc =NULL; // Function pointer to Hook Procedure <br />
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#pragma data_seg()<br />
#pragma comment(linker, "/section:.SHARED,rws")<br />
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<br />
	 static LRESULT CALLBACK ShellProc(int nCode,WPARAM wParam,LPARAM lParam)<br />
	{		<br />
		TRACE("Shell message rcvd nCode = %d wParam = %d lParam=%d \n",nCode,wParam,lParam);<br />
		if(nCode == HSHELL_WINDOWCREATED )<br />
		{<br />
			TRACE("new window created \n");<br />
		<br />
		}<br />
		else if(nCode == HSHELL_WINDOWDESTROYED)<br />
		{			<br />
		<br />
		}<br />
		<br />
		return CallNextHookEx(hookid, nCode, wParam, lParam); <br />
	}<br />
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//<br />
//	Note!<br />
//<br />
//		If this DLL is dynamically linked against the MFC<br />
//		DLLs, any functions exported from this DLL which<br />
//		call into MFC must have the AFX_MANAGE_STATE macro<br />
//		added at the very beginning of the function.<br />
//<br />
//		For example:<br />
//<br />
//		extern "C" BOOL PASCAL EXPORT ExportedFunction()<br />
//		{<br />
//			AFX_MANAGE_STATE(AfxGetStaticModuleState());<br />
//			// normal function body here<br />
//		}<br />
//<br />
//		It is very important that this macro appear in each<br />
//		function, prior to any calls into MFC.  This means that<br />
//		it must appear as the first statement within the <br />
//		function, even before any object variable declarations<br />
//		as their constructors may generate calls into the MFC<br />
//		DLL.<br />
//<br />
//		Please see MFC Technical Notes 33 and 58 for additional<br />
//		details.<br />
//<br />
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/////////////////////////////////////////////////////////////////////////////<br />
// CHookEgApp<br />
<br />
BEGIN_MESSAGE_MAP(CHookEgApp, CWinApp)<br />
	//{{AFX_MSG_MAP(CHookEgApp)<br />
		// NOTE - the ClassWizard will add and remove mapping macros here.<br />
		//    DO NOT EDIT what you see in these blocks of generated code!<br />
	//}}AFX_MSG_MAP<br />
END_MESSAGE_MAP()<br />
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/////////////////////////////////////////////////////////////////////////////<br />
// CHookEgApp construction<br />
<br />
CHookEgApp::CHookEgApp()<br />
{<br />
	// TODO: add construction code here,<br />
	// Place all significant initialization in InitInstance<br />
}<br />
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/////////////////////////////////////////////////////////////////////////////<br />
// The one and only CHookEgApp object<br />
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CHookEgApp theApp;<br />
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BOOL CHookEgApp::InitInstance() <br />
{<br />
<br />
	<br />
	return CWinApp::InitInstance();<br />
}<br />
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int CHookEgApp::ExitInstance() <br />
{<br />
	// TODO: Add your specialized code here and/or call the base class<br />
	if(hookid)<br />
	{<br />
		if(UnhookWindowsHookEx(hookid))<br />
			hookid = 0; <br />
		else<br />
			TRACE("Error = %d\n",GetLastError());<br />
		//return (hookid ==0);<br />
	}<br />
	<br />
	return CWinApp::ExitInstance();<br />
}<br />
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HOOKEG_API void  HookegInit() <br />
{<br />
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		// TODO: Add your specialized code here and/or call the base class<br />
	hookid = 0;<br />
	<br />
	mod = GetModuleHandle("HookEg.dll"/*strDLLPath*/);<br />
	//delete [] strDLLPath ; <br />
	//strDLLPath = NULL ; <br />
	<br />
	proc = ShellProc;<br />
	<br />
	hookid = SetWindowsHookEx(WH_SHELL , proc , mod , NULL);<br />
	<br />
<br />
}<br />
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