关于Hook拦截不到WM_WM_KILLFOCUS消息。

LRESULT CALLBACK GetMsgProc( int code, // hook code
  WPARAM wParam, // current-process flag  
  LPARAM lParam // message data
)

SetWindowsHookEx(WH_GETMESSAGE,GetMsgProc,GetModuleHandle("HookDll"),NULL);

现在钩子可以设置成功，也进入了GetMsgProc函数。，但就是拦截不到指定的消息， 
大概就是这些，具体代码如下：

dll def文件：
C/C++ code

LIBRARY HookDll
EXPORTS
SetHook

dll cpp文件：
C/C++ code

#include <windows.h>
#pragma data_seg("MyHookEx")
HHOOK hhgm=NULL;
#pragma data_seg()

#pragma comment(linker,"/section:MyHookEx,RWS")
LRESULT CALLBACK GetMsgProc(  int code,      // hook code
  WPARAM wParam,  // current-process flag  
  LPARAM lParam   // message data
)
{
    if(code==HC_ACTION)
    {
        MSG *msg = (MSG*)lParam;
        if(code == HCBT_ACTIVATE)
        {
            if(msg->message==WM_KILLFOCUS)
            {
                MessageBox(0,0,0,0);
            }
        }
        return 0;
    }else if(code<0)
    {
        return CallNextHookEx(hhgm,code,wParam,lParam);
    }
    return 0;
}
void SetHook()
{
    hhgm = SetWindowsHookEx(WH_GETMESSAGE,GetMsgProc,GetModuleHandle("HookDll"),NULL);
    if(hhgm)
    {
        MessageBox(0,"Hook is sucess!",0,0);
    }else
    {
        MessageBox(0,"Hook is NULL!",0,0);
    }
}

Exe cpp文件：
C/C++ code

#include <Windows.h>
_declspec(dllimport) void SetHook();
LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
HWND hb;
int WINAPI WinMain(
    HINSTANCE hInstance,
    HINSTANCE hPrveInstance,
    LPSTR lpCmdLine,
    int nCmdShow)
{
    WNDCLASSEX wcex;
    wcex.cbClsExtra=0;
    wcex.cbSize=sizeof(WNDCLASSEX);
    wcex.cbWndExtra=0;
    wcex.hbrBackground=(HBRUSH)(COLOR_WINDOW+1);
    wcex.hCursor=LoadCursor(NULL,IDC_ARROW);
    wcex.hIcon=LoadIcon(NULL,IDI_APPLICATION);
    wcex.hIconSm=LoadIcon(NULL,IDI_APPLICATION);
    wcex.hInstance=hInstance;
    wcex.lpfnWndProc=WndProc;
    wcex.lpszClassName="ClassName";
    wcex.lpszMenuName=NULL;
    wcex.style=CS_HREDRAW|CS_VREDRAW;
    RegisterClassEx(&wcex);
    HWND hwnd=CreateWindow(wcex.lpszClassName,"Title",WS_OVERLAPPEDWINDOW+WS_VISIBLE,CW_USEDEFAULT,CW_USEDEFAULT,350,250,NULL,NULL,hInstance,NULL);
    hb=CreateWindow("Button","Title",WS_CHILDWINDOW+WS_VISIBLE,0,0,100,50,hwnd,NULL,hInstance,NULL);
    MSG msg;
    while(GetMessage(&msg,NULL,0,0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
    return (int) msg.wParam;
}
LRESULT CALLBACK WndProc(HWND hWnd,UINT message,WPARAM wParam,LPARAM lParam)
{
    switch(message)
    {
    case WM_CREATE:
        break;
    case WM_COMMAND:
        if((HWND)lParam==hb)
        {
            SetHook();
        }
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hWnd,message,wParam,lParam);
        break;
    }
    return 0;
}

不是吧，怎么没人啊......