WH_JOURNALRECORD 钩子 无法安装。。。。。

Question

HHOOK hHook;



bool StartHook(HINSTANCE hInstance)
{
   DWORD a；
   hHook = SetWindowsHookEx(WH_JOURNALRECORD, HookProc, hInstance, 0);
   a = GetLastError();
   if (!hHook) return false;
   return true;
}

不知为什么，断下来发现hHook总是为0，不能安装成功。GetLastError返回是5.。。。

 

 

我是win7系统

Answer 1

没有提升权限的话不行。需要以管理员身份运行。你也可以在应用程序的清单文件中加入<requestedExecutionLevel level="requireAdministrator" uiAccess="true"/> 

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Answer 2

我设置过了，只不过是在linker-Manifest File-UAC Execution Level设置为了requireAdministrator。。。

uiAccess设置了会出错。。。

 

但是还是不行

Answer 3

这个权限提升是需要代码的，具体提升方法可以参考关机的权限提升方法：

#include <windows.h>

#pragma comment(lib, "user32.lib")
#pragma comment(lib, "advapi32.lib")

BOOL MySystemShutdown()
{
  HANDLE hToken; 
  TOKEN_PRIVILEGES tkp; 
 
  // Get a token for this process. 
 
  if (!OpenProcessToken(GetCurrentProcess(), 
    TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken)) 
   return( FALSE ); 
 
  // Get the LUID for the shutdown privilege. 
 
  LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME, 
    &tkp.Privileges[0].Luid); 
 
  tkp.PrivilegeCount = 1; // one privilege to set  
  tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; 
 
  // Get the shutdown privilege for this process. 
 
  AdjustTokenPrivileges(hToken, FALSE, &tkp, 0, 
    (PTOKEN_PRIVILEGES)NULL, 0); 
 
  if (GetLastError() != ERROR_SUCCESS) 
   return FALSE; 
 
  // Shut down the system and force all applications to close. 
 
  if (!ExitWindowsEx(EWX_SHUTDOWN | EWX_FORCE, 
        SHTDN_REASON_MAJOR_OPERATINGSYSTEM |
        SHTDN_REASON_MINOR_UPGRADE |
        SHTDN_REASON_FLAG_PLANNED)) 
   return FALSE; 

  //shutdown was successful
  return TRUE;
}

Answer 4

你好，

这个问题我可以重现。我是在Win7 x64系统下重现的，其他XP/2003没有问题。在Win7下即使run as administrator了还是有这个问题，LastError 5是表示访问拒绝。Win7下面有些问题是比较难处理的。我推荐你下载一个sample，这个sample在win7 x64下运行也是没问题的。
http://1code.codeplex.com/
里面有一个CPPHook的sample。你可以先参考一下，希望对你有帮助。

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