DLL建立读写共享节区(Segment)

// Hook.cpp : Defines the entry point for the DLL application.
//

#include "stdafx.h"
#include "Hook.h"

HHOOK g_hHook;
HHOOK g_hHookKey;
HINSTANCE g_hIns;

#pragma data_seg("MySeg")
HWND g_hWnd =NULL;
#pragma data_seg()

//#pragma comment(linker,"/section:MySeg,RWS")

BOOL APIENTRY DllMain( HANDLE hModule, 
                       DWORD  ul_reason_for_call, 
                       LPVOID lpReserved
					 )
{
	g_hIns =(HINSTANCE) hModule;
//     switch (ul_reason_for_call)
// 	{
// 		case DLL_PROCESS_ATTACH:
// 		case DLL_THREAD_ATTACH:
// 		case DLL_THREAD_DETACH:
// 		case DLL_PROCESS_DETACH:
// 			break;
//     }
    return TRUE;
}

LRESULT CALLBACK MouseProc(
						   int nCode,      // hook code
						   WPARAM wParam,  // message identifier
						   LPARAM lParam   // mouse coordinates
						   )
{
	return 1;
}


LRESULT CALLBACK KeyProc(
						   int nCode,      // hook code
						   WPARAM wParam,  // message identifier
						   LPARAM lParam   // mouse coordinates
						   )
{
	if(wParam == VK_F2){
		UnhookWindowsHookEx(g_hHook);
		UnhookWindowsHookEx(g_hHookKey);
		//MessageBox(0,"去掉了Hook","提示",0);
		::SendMessage(g_hWnd,WM_CLOSE,0,0);
		return 1;
	}
	else return CallNextHookEx(g_hHookKey,nCode,wParam,lParam);	
}

HOOK_API void SetHook(HWND hWnd)
{
	g_hWnd = hWnd;
// 	g_hHook = SetWindowsHookEx(WH_MOUSE,MouseProc,g_hIns,0);
// 	g_hHookKey = SetWindowsHookEx(WH_KEYBOARD,KeyProc,g_hIns,0);
	g_hHook = SetWindowsHookEx(WH_MOUSE,MouseProc,GetModuleHandle("Hook.dll"),0);
	g_hHookKey = SetWindowsHookEx(WH_KEYBOARD,KeyProc,GetModuleHandle("Hook"),0);
 
}

　　Hook.def

LIBRARY Hook
EXPORTS
SetHook @23

SEGMENTS
MySeg	READ WRITE SHARED

　　

Client:

/////////////////////////////////////////////////////////////////////////////
// CHookTestDlg message handlers

BOOL CHookTestDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	int cx,cy;
	cx=GetSystemMetrics(SM_CXSCREEN);
	cy=GetSystemMetrics(SM_CYSCREEN);
	SetWindowPos(&wndTopMost,0,0,cx,cy,SWP_SHOWWINDOW);

	SetHook(this->m_hWnd);  

	return TRUE;  // return TRUE  unless you set the focus to a control
}