How to access WSL path direct from windows API?

Question

I have windows10 and WSL environment. Suppose I want to access a WSL file via windows API ,eg

HFILE WINAPI OpenFile(
  _In_   LPCSTR lpFileName,
  _Out_  LPOFSTRUCT lpReOpenBuff,
  _In_   UINT uStyle
);

How can I access file in windows like these

OpenFile(L"/opt/file" ... ) 

instead of

OpenFile(L"\\\\wsl$\\Ubuntu\\opt\\file" ... ) 

Can we use API or Windows mklink/driver remap ways to made it?