我有这个dll电话:
[DllImport("FreqCntPcIntf.dll", CallingConvention = CallingConvention.StdCall)]
public static extern Intf_ErrorType FreqCntIntf_Init(
ref byte InstNo,
string InstName,
string PortServerName,
ulong UartComPort,
ulong MaxBlockTime);
enum Intf_ErrorType
{
...
}
C ++声明是这样的:
FREQCNTINTF_API Intf_ErrorType STDCALL FreqCntIntf_Init(InstanceNoType* InstNo, const char* InstName, const char* PortServerName, rsuint32 UartComPort, rsuint32 MaxBlockTime);
其中:
typedef enum
{
....
} RSENUM8(Intf_ErrorType);
#define FREQCNTINTF_API __declspec(dllexport)
typedef rsuint8 InstanceNoType;
typedef unsigned char rsuint8;
#define RSENUM32(EnumName) Enum_##EnumName; typedef rsuint32 EnumName
我在通话期间收到AccessViolation。我应该在哪里找到这个bug?
答案 0 :(得分:1)
rsuint32
应表示为uint
,宽度为4字节,而不是ulong
,在C#中长度为8字节。此外,您可能希望通过指定CharSet来确保您的字符串是编组的proplery,如下所示:
[DllImport("FreqCntPcIntf.dll", CallingConvention = CallingConvention.StdCall, CharSet=CharSet.Ansi)]