下面是我的hookdll的源代码，请高手帮忙看看。
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HINSTANCE hMod=NULL;
static HWND hParentWnd;
struct HOOKINFO
{
    HHOOK hook;
    DWORD dThreadId;    
}hk;

struct MsgData
{
    UINT   msg;
    WPARAM wParam;
    LPARAM lParam;
    HWND hwnd;
    char type;
    char result;
};  

extern"C" __declspec(dllexport) bool __stdcall InstallHook(HWND hWnd,DWORD dThreadId);
extern"C" __declspec(dllexport) bool __stdcall DisableHook(HWND hWnd,DWORD dThreadId);
LRESULT CALLBACK CallWndProc(int nCode, WPARAM wParam, LPARAM lParam);
void ShowError();
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
int WINAPI DllEntryPoint(HINSTANCE hinst, unsigned long reason, void* lpReserved)
{
    switch(reason)
    {
        case DLL_THREAD_ATTACH:
        case DLL_PROCESS_ATTACH:
                hMod=hinst;
                hParentWnd=FindWindow("TfrmMypro",NULL);
                break;
        case DLL_PROCESS_DETACH:
                UnhookWindowsHookEx(hk.hook);
                hk.hook=NULL;
                break;
    }
    return 1;
}
//---------------------------------------------------------------------------
extern"C" __declspec(dllexport) bool __stdcall DisableHook(HWND hWnd,DWORD dThreadId)
{
    if(hk.hook&&hk.dThreadId==dThreadId)
    {
        bool b=UnhookWindowsHookEx(hk.hook);
        hk.hook=NULL;
        return b;
    }
    return 0;
}
//---------------------------------------------------------------------------
extern"C" __declspec(dllexport) bool __stdcall InstallHook(HWND hWnd,DWORD dThreadId)
{
    if(hk.hook&&hk.dThreadId==dThreadId)
    {
        //ShowMessage("已经hook啦");
        return 1;
    }
    hk.hook=SetWindowsHookEx(WH_CALLWNDPROC,(HOOKPROC)CallWndProc,hMod,dThreadId);
    
    //hk.hook=SetWindowsHookEx(WH_MSGFILTER,(HOOKPROC)CallWndProc,hMod,dThreadId);
    //hk.hook=SetWindowsHookEx(WH_CBT,(HOOKPROC)CallWndProc,hMod,dThreadId);
    //hk.hook=SetWindowsHookEx(WH_GETMESSAGE,(HOOKPROC)CallWndProc,hMod,dThreadId);

    if(hk.hook)
    {
        hk.dThreadId=dThreadId;
        return true;
    }
    else ShowError();
    return false;
}
//---------------------------------------------------------------------------
LRESULT CALLBACK CallWndProc(int nCode, WPARAM wParam, LPARAM lParam)
{
    if(nCode>=0&&IsWindow(hParentWnd))
    {
        CWPSTRUCT* mm=(CWPSTRUCT*)lParam;
        MsgData data;
        data.msg=mm->message;
        data.wParam=mm->wParam;   // (int)
        data.lParam=mm->lParam;  //(int)
        data.hwnd=mm->hwnd;
        data.type=1;
        data.result=0;
        COPYDATASTRUCT copydata;
        copydata.dwData=0;
        copydata.cbData=sizeof(MsgData);
        copydata.lpData=&data;
        SendMessage(hParentWnd,WM_COPYDATA,0,(LPARAM)&copydata);
    }
    return CallNextHookEx(hk.hook,nCode,wParam,lParam);
}
//---------------------------------------------------------------------------
void ShowError()
{
    char lpMsgBuf[200];
    FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL,
        GetLastError(), 0, lpMsgBuf, 200, NULL);
    ShowMessage(lpMsgBuf);
}
//---------------------------------------------------------------------------
我用上面的代码可以hook到其他进程，比如“记事本”，并且能够拦截到
WM_MENUSELECT、WM_INITMENUPOPUP、WM_COMMAND 等消息，我把拦截到的消息通过：
SendMessage(hParentWnd,WM_COPYDATA,0,(LPARAM)&copydata);发送到我的主程序。
就是没有发现菜单命令的消息。

下面是我的主程序里接收hookdll发送过来的消息。
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private: // User declarations
    virtual void __fastcall WndProc(TMessage &Message);

//--------------------------------------------
#define WM_COMMAND 0x0111 
struct MsgData
{
    UINT   msg;
    WPARAM wparam;
    LPARAM lparam;
    HWND hWnd;
    char type;
    char result;
};

void __fastcall TfrmMypro::WndProc(TMessage &Message)
{
    PCOPYDATASTRUCT pMyCDS;
    int i;
    TForm::WndProc(Message);//其他的消息继续传递下去

    if(Message.Msg==WM_COPYDATA)
    {
        String s,s0,sMsg,sClass;
        UINT msg;
        MsgData *msgdata;
        pMyCDS=(PCOPYDATASTRUCT)Message.LParam;
        msgdata=(MsgData *)pMyCDS->lpData;
        msg=msgdata->msg;
        ......//显示其他消息
        if(msg==WM_COMMAND) 
{
    if(HIWORD(msgdata->wparam)==0) //菜单命令
            {
                i=LOWORD(msgdata->wparam);
                ShowMessage(i); //显示菜单id
                return;
            }
                    
}
    }
}
//---------------------------------------------------------------------------

用WH_GETMESSAGE怎么样?

用WH_GETMESSAGE也不行的。

各位老大都很忙。等待中......

mark

捧场！