Question

C# 调用非托管DLL 原因可能是托管的 PInvoke 签名与非托管的目标签名不匹配

原型：HANDLE __stdcall dc_init(__int16 port,long baud);

[DllImport("dcrf32.dll",CallingConvention=CallingConvention.Cdecl)]
public static extern IntPtr dc_init(Int16 port, long baud);

IntPtr icdev =dc_init(100,115200);

Answer 1

[DllImport("dcrf32.dll",CallingConvention=CallingConvention.StdCall)]
public static extern IntPtr dc_init(Int16 port, Int32 baud);

把long换成Int32，Cdecl改成StdCall