Question

我的任务是将C＃程序与带有非托管代码的.DLL连接起来。我在互联网上找不到任何东西来帮助我实现这个目标。我得到一个PInvokeStackImbalance异常。我已经尝试将CallingConvention更改为.Winapi而没有运气。我可能会对此完全错误，所以对于如何处理此问题的任何指导都表示赞赏！

以下是我必须使用的非托管代码：

extern "C" __declspec(dllexport) int WINAPI GetAlarm (unsigned short hndl, ALARMALL *alarm);

typedef struct {
    ALARM alarm [ALMMAX];
} ALARMALL;
ALMMAX = 24

typedef struct {
    short eno;
    unsigned char sts;
    char msg[32];
} ZALARM;

以下是我编写的托管C＃端：

[DllImport("my.dll", EntryPoint = "GetAlarm", CallingConvention = CallingConvention.Cdecl)]
public static extern int GetAlarm(ushort hndl, ALARMALL alarm);

public struct ALARMALL 
{
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 24)]
    ZALARM alarm;
}

[StructLayout(LayoutKind.Sequential)]
public struct ZALARM
{
    [MarshalAs(UnmanagedType.I2)]
    public short eno;

    [MarshalAs(UnmanagedType.U1)]
    public byte sts;

    [MarshalAs(UnmanagedType.I1, SizeConst = 32)]
    public char msg;
}

Answer 1

最后让这个工作正常，所以我会发帖给任何可能觉得有用的人。

[DllImport("my.dll", EntryPoint = "GetAlarm")]
public static extern int GetAlarm(ushort hndl, ref ALARMALL alarm);

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
public struct ALARMALL
{
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 24)]
    public ZALARM[] alarm;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
public struct ZALARM
{
    public short eno;

    public byte sts;

    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
    public string msg;

C＃ - 如何在包含数组的结构中封送非托管结构

1 个答案: