引用C++的dll，要如何改

引用C++的dll，要怎么改啊
在C++里面的定义是

C/C++ code

extern "C" __declspec(dllimport) bool Usb_Qu_write(byte Qu_index, char Qu_type, char *pData);

C# code

public static extern bool Usb_Qu_write(byte Q_index, byte Q_type, byte pQ_data); 

C# code

public static extern bool Usb_Qu_write(Byte Qu_index, SByte Qu_type, [In, Out] SByte[] pData);