struct MeterData
{
public int iStatus;
public float fWeight;
public int iByte;
}
[DllImport("meter.dll", EntryPoint = "Get_S_MT_814x", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]
public static extern MeterData Get_S_MT_814x(int port);
小弟基本对c#不怎么熟悉,现在要返回一个结构体,好像这样编译不过去!
{
public int iStatus;
public float fWeight;
public int iByte;
}
[DllImport("meter.dll", EntryPoint = "Get_S_MT_814x", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]
public static extern MeterData Get_S_MT_814x(int port);
小弟基本对c#不怎么熟悉,现在要返回一个结构体,好像这样编译不过去!
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public struct MeterData
{
public int iStatus;
public float fWeight;
public int iByte;
}
[DllImport("meter.dll", EntryPoint = "Get_S_MT_814x", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]
public static extern MeterData Get_S_MT_814x(int port);
{
public int iStatus;
public float fWeight;
public int iByte;
}
[DllImport("meter.dll", EntryPoint = "Get_Comm_Meter", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]
public static extern MeterData Get_Comm_Meter(int port, char c_STX, char c_CR, int iFrameLen, int iPos, int iLen, Boolean bInverse);
Get_Comm_Meter ()这个函数是返回的meterdate 是个结构!返回不是结构的时候没有问题!以前一直用delphi的现在要用c#把一个函数封装上去
错误 1 可访问性不一致: 返回类型“WindowsApplication1.Form1.MeterData”比方法“WindowsApplication1.Form1.Get_Comm_Meter(int, char, char, int, int, int, bool)”的可访问性低 F:\私人文件\dll\c#测试\WindowsApplication1\WindowsApplication1\Form1.cs 51 41 WindowsApplication1
[DllImport("meter.dll", EntryPoint = "DelAllNotDigChar", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]
public static extern string DelAllNotDigChar(string scoure);
这个函数调用是没有问题