MS Detours 2.1 - 無法解析的外部

Question

我正在使用MS Detours 2.1庫和VS 2010.我試圖繞過PlaySoundW函數。

我不能編譯代碼和我得到這些錯誤：

Error 2 error LNK1120: 1 unresolved externals (...)\detoursLearning.dll detoursLearning

Error 1 error LNK2001: unresolved external symbol __imp__PlaySoundW@12 (...)\detoursLearning\main.obj detoursLearning

我的代碼：

#include <Windows.h> 
#include <tchar.h> 
#include <detours.h> 

namespace Hooks 
{ 
    BOOL(__stdcall *OrgPlaySoundW)(LPCTSTR pszSound, HMODULE hmod, DWORD fdwSound) = &PlaySoundW; 

    BOOL HookPlaySoundW(LPCTSTR pszSound, HMODULE hmod, DWORD fdwSound) 
    { 
     Beep(1000, 250); 
     return TRUE; 
    } 

    void DetourPlaySoundW(BOOL disable) 
    { 
     if(!disable) 
     { 
      DetourTransactionBegin(); 
      DetourUpdateThread(GetCurrentThread()); 
      DetourAttach(&(PVOID&)OrgPlaySoundW, HookPlaySoundW); 
      DetourTransactionCommit(); 
     } else 
     { 
      DetourTransactionBegin(); 
      DetourUpdateThread(GetCurrentThread()); 
      DetourDetach(&(PVOID&)OrgPlaySoundW, HookPlaySoundW); 
      DetourTransactionCommit(); 
     } 
    } 
} 

BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) 
{ 
    switch(fdwReason) 
    { 
    case DLL_PROCESS_ATTACH: 
     Hooks::DetourPlaySoundW(FALSE); 
     break; 
    case DLL_PROCESS_DETACH: 
     Hooks::DetourPlaySoundW(TRUE); 
     break; 
    } 
    return TRUE; 
} 

一件事，你能解釋一下我這個：

&(PVOID&)OrgPlaySoundW 

Answer 1

你沒有鏈接到winmm.lib。

http://msdn.microsoft.com/en-us/library/dd743680%28VS.85%29.aspx

馬丁