Question

我目前正在研究USB设备，该设备需要从其他设备进行采集。

我遇到<target name="prepare-asm" depends="package,check-components-properties"> <mkdir dir="${build.asm.classes}"/> <javac srcdir="${jikesrvm.dir}/tools/asm-tasks/src" destdir="${build.asm.classes}" debug="true" classpath="${asm.jar}:${build.vm.jar}:${build.rt.jar}" includeantruntime="false"/> </target>问题，无法在c＃中重现。

在Dll的源代码中，我有这个：

typedef struct

这是我的代码：

typedef struct _UF01_INFORMATIONS{
        BYTE Type[MAX_MODULE];
        BYTE Nombre_Module;
        BYTE Nb_Voies[MAX_MODULE];
        BYTE Modele[MAX_MODULE];
        char *Name[MAX_MODULE];
        char *Comments[MAX_MODULE];
        BOOL UseInterrupt;
} UF01_INFORMATIONS, *PUF01_INFORMATIONS;

MAX_MODULE equals 8 ^^

“ UF01_GetInfosModule”行的错误是：“ PInvoke托管签名与非托管签名不同”

我正在搜索，但是找不到为什么出现此错误。

感谢您的帮助！

Answer 1

我的代码现在是：

    public partial class Form1 : Form { 

    [DllImport(@"C:\Program Files (x86)\SELIAtec\UF01\UF01.dll", EntryPoint = "UF01_OpenDevices", CallingConvention = System.Runtime.InteropServices.CallingConvention.Winapi)]
    unsafe static extern Boolean UF01_OpenDevices(ref byte devices);

    [DllImport(@"C:\Program Files (x86)\SELIAtec\UF01\UF01.dll", EntryPoint = "UF01_CloseAll", CallingConvention = System.Runtime.InteropServices.CallingConvention.Winapi)]
    unsafe static extern void UF01_CloseAll();

    [DllImport(@"C:\Program Files (x86)\SELIAtec\UF01\UF01.dll", EntryPoint = "UF01_UD01_8Entrees", CallingConvention = System.Runtime.InteropServices.CallingConvention.Winapi)]
    unsafe static extern Boolean UF01_UD01_8Entrees(byte Device, byte module, ref byte data);

    [DllImport(@"C:\Program Files (x86)\SELIAtec\UF01\UF01.dll", EntryPoint = "UF01_UD01_8Entrees", CallingConvention = System.Runtime.InteropServices.CallingConvention.Winapi)]
    unsafe static extern Boolean UF01_GetInfosModule(byte Device, bool Watchdog, ref _UF01_INFORMATIONS infos);

    [DllImport(@"C:\Program Files (x86)\SELIAtec\UF01\UF01.dll", EntryPoint = "UF01_UA01_Entrees", CallingConvention = System.Runtime.InteropServices.CallingConvention.Winapi)]
    unsafe static extern Boolean UF01_UA01_Entrees(byte Device, byte Module, ref ushort[] TableData_12bit);

    public Form1()
    {
        InitializeComponent();

    }

    [StructLayout(LayoutKind.Sequential)]
    public struct _UF01_INFORMATIONS
    {
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
        public byte[] Type;
        [MarshalAs(UnmanagedType.U1)]
        public byte Nombre_Module;
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
        public byte[] Nb_Voies;
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
        public byte[] Modele;
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
        public string[] Name;
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
        public string[] Comments;
        [MarshalAs(UnmanagedType.I1)]
        public bool UseInterrupt;
    }


    private unsafe void button1_Click(object sender, EventArgs e)
    {
        byte nb_Device = 0;
        ushort[] data = new ushort[8]; 

        _UF01_INFORMATIONS m_infos = new _UF01_INFORMATIONS();
        m_infos.Type = new byte[8];
        m_infos.Nb_Voies = new byte[8];
        m_infos.Modele = new byte[8];
        m_infos.Name = new string[8];
        m_infos.Comments = new string[8];
        m_infos.Nombre_Module = 0;
        m_infos.UseInterrupt = false;

        if (UF01_OpenDevices(ref nb_Device))
        {
            this.label1.Text = "Nombre de CPU's : " + nb_Device;

            if (UF01_GetInfosModule(nb_Device, false, ref m_infos))
                label2.Text = "Nombre de modules : " + m_infos.Nombre_Module.ToString();

            if (UF01_UA01_Entrees(nb_Device, 1, ref data))
                label3.Text = "Donnee : " + data[0].ToString();
        }
    }
}

第一个称为UF01_OpenDevices的函数起作用。它在ref变量中返回设备数。但是其他两个功能不起作用。他们返回假。我不知道为什么...

有错误：PInvokeStackImbalance与dll

1 个答案: