C++ (Cpp) co_IntGetScrollInfo示例

示例#1

文件： scrollbar.c 项目： HBelusca/NasuTek-Odyssey

BOOL
APIENTRY
NtUserSBGetParms(
  HWND hWnd, 
  int fnBar, 
  PSBDATA pSBData,
  LPSCROLLINFO lpsi)
{
   NTSTATUS Status;
   PWND Window;
   SCROLLINFO psi;
   DWORD sz;
   BOOL Ret;
   DECLARE_RETURN(BOOL);
   USER_REFERENCE_ENTRY Ref;

   TRACE("Enter NtUserGetScrollInfo\n");
   UserEnterExclusive();

   Status = MmCopyFromCaller(&psi.cbSize, &(lpsi->cbSize), sizeof(UINT));
   if(!NT_SUCCESS(Status) ||
         !((psi.cbSize == sizeof(SCROLLINFO)) || (psi.cbSize == sizeof(SCROLLINFO) - sizeof(psi.nTrackPos))))
   {
      SetLastNtError(Status);
      RETURN(FALSE);
   }
   sz = psi.cbSize;
   Status = MmCopyFromCaller(&psi, lpsi, sz);
   if (!NT_SUCCESS(Status))
   {
      SetLastNtError(Status);
      RETURN(FALSE);
   }

   if(!(Window = UserGetWindowObject(hWnd)))
   {
      RETURN(FALSE);
   }

   UserRefObjectCo(Window, &Ref);
   Ret = co_IntGetScrollInfo(Window, fnBar, &psi);
   UserDerefObjectCo(Window);

   Status = MmCopyToCaller(lpsi, &psi, sz);
   if(!NT_SUCCESS(Status))
   {
      SetLastNtError(Status);
      RETURN( FALSE);
   }

   RETURN( Ret);

CLEANUP:
   TRACE("Leave NtUserGetScrollInfo, ret=%i\n",_ret_);
   UserLeave();
   END_CLEANUP;
}

示例#2

文件： scrollbar.c 项目： GYGit/reactos

BOOL
APIENTRY
NtUserSBGetParms(
  HWND hWnd,
  int fnBar,
  PSBDATA pSBData,
  LPSCROLLINFO lpsi)
{
   PWND Window;
   SCROLLINFO psi;
   BOOL Ret;
   SBDATA SBDataSafe;
   DECLARE_RETURN(BOOL);
   USER_REFERENCE_ENTRY Ref;

   TRACE("Enter NtUserGetScrollInfo\n");
   UserEnterShared();

   _SEH2_TRY
   {
      RtlCopyMemory(&psi, lpsi, sizeof(SCROLLINFO));
      if (pSBData)
      {
         RtlCopyMemory(&SBDataSafe, pSBData, sizeof(SBDATA));
      }
   }
   _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
   {
      ERR("NtUserGetScrollInfo Failed size.\n");
      SetLastNtError(_SEH2_GetExceptionCode());
      _SEH2_YIELD(RETURN(FALSE));
   }
   _SEH2_END

   if(!(Window = UserGetWindowObject(hWnd)))
   {
      ERR("NtUserGetScrollInfo Bad window.\n");
      RETURN(FALSE);
   }

   UserRefObjectCo(Window, &Ref);
   Ret = co_IntGetScrollInfo(Window, fnBar, &SBDataSafe, &psi);
   UserDerefObjectCo(Window);

   _SEH2_TRY
   {
      RtlCopyMemory(lpsi, &psi, sizeof(SCROLLINFO));
   }
   _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
   {
      ERR("NtUserGetScrollInfo Failed copy to user.\n");
      SetLastNtError(_SEH2_GetExceptionCode());
      _SEH2_YIELD(RETURN(FALSE));
   }
   _SEH2_END

   RETURN( Ret);

CLEANUP:
   TRACE("Leave NtUserGetScrollInfo, ret=%i\n",_ret_);
   UserLeave();
   END_CLEANUP;
}