解决DragQueryFile()在x64下获取文件数量为0

HDROP hDrop = NULL;

HANDLE hProcessHeap = ::GetProcessHeap();
if (NULL != hProcessHeap && ::HeapLock(hProcessHeap))
{
  PROCESS_HEAP_ENTRY heapEntry = { 0 };
  while(::HeapWalk(hProcessHeap, &heapEntry) != FALSE)
  {
    if ((heapEntry.wFlags & PROCESS_HEAP_ENTRY_BUSY) != 0)
    {
      HGLOBAL hGlobal = ::GlobalHandle(heapEntry.lpData);
      // Assuming wParam is the WM_DROPFILES WPARAM
      if ((((DWORD_PTR) hGlobal) & 0xFFFFFFFF) == (wParam & 0xFFFFFFFF))
      {
        hDrop = (HDROP) hGlobal; // We got it !!
        break;
      }
    }
  }
  ::HeapUnlock(hProcessHeap);
}