“运行时检查故障＃0” - ESP的值没有通过函数调用正确地保存“后成功C＃回调从GameSpy lib的C ++代码

问题描述

我正在制作一个使用GameSpy C代码（GP部分）的C＃应用​​程序。 C代码正在成功调用回调（它是C＃代码），但是在回调完成后，我收到此错误运行时检查失败＃0 - ESP的值未正确保存在函数调用。我用C代码编写了一个DLL，如下：

I'm making a C# application which is using GameSpy C code (the GP part). The C code is calling a callback (which is C# code) succesfully, but I get this error "Run-Time Check Failure #0 - The value of ESP was not properly saved across a function call" right after the callback is done. I've made a DLL out of C code, BTW like this:

    // GPCallback
    /////////////
    __declspec(dllexport) typedef void (* GPCallback)(
      GPConnection * connection,
      void * arg,
      void * param
    );

    // gpConnect
    ////////////
    __declspec(dllexport) GPResult gpConnect
    (
      GPConnection * connection,
      const gsi_char nick[GP_NICK_LEN],
      const gsi_char email[GP_EMAIL_LEN],
      const gsi_char password[GP_PASSWORD_LEN],
      GPEnum firewall,
      GPEnum blocking,
      GPCallback callback,
      void * param
    );

C＃正在这样调用：

   unsafe public delegate void GPCallback(
   GPConnection * connection,
   //GPConnectResponseArg arg,
   IntPtr arg,
   IntPtr param
  );

  [DllImport("saketestd.dll")]
  unsafe static extern GPResult gpConnect(
   GPConnection * connection,
   gsi_char nick,
   gsi_char email,
   gsi_char password,
   GPEnum firewall,
   GPEnum blocking,
   GPCallback callback,
   IntPtr param
  );
  unsafe public bool gpConnectE() {
   bool ret = false;
   try {
    GPResult res;
    debug.AddLine(this.getMethodName() + ": " + "connection before connect: " + connection.ToString("x"));
    fixed (int* pconn = &connection) {
     res = gpConnect(
      pconn,
      this.NICK,
      this.EMAIL,
      this.PASSWORD,
      GPEnum.GP_NO_FIREWALL,
      GPEnum.GP_BLOCKING,
      new GPCallback(this.ConnectResponse),
      IntPtr.Zero
     );
    }
    debug.AddLine(this.getMethodName() + ": " + "connection after connect: " + connection.ToString("x"));
    if (res != GPResult.GP_NO_ERROR) {
     debug.AddLine(this.getMethodName() + ": " + "failed: " + res);
    } else {
     debug.AddLine(this.getMethodName() + ": " + "OK");
     ret = true;
    }
   } catch (Exception ex) {
    debug.Text += ex.ToString();
   }
   return ret;
  }

  unsafe public void ConnectResponse(
   GPConnection * connection,
   //GPConnectResponseArg arg,
   IntPtr argPtr,
   IntPtr param
  ) {
   debug.AddLine(this.getMethodName() + " called with connection: " + (*connection).ToString("x"));
   GPConnectResponseArg arg;
   arg = (GPConnectResponseArg)Marshal.PtrToStructure(argPtr, typeof(GPConnectResponseArg));
   if (arg.result == GPResult.GP_NO_ERROR) {
    debug.AddLine(this.getMethodName() + ": Connected to GP");
    this.profileid = arg.profile;
   } else {
    debug.AddLine(this.getMethodName() + ": failed");
    debug.AddLine(this.getMethodName() + ": result: " + arg.result);
    debug.AddLine(this.getMethodName() + ": profile: " + arg.profile);
    debug.AddLine(this.getMethodName() + ": uniquenick: " + arg.uniquenick);
   }
  }

我相信我需要清除堆栈回调或更改DLL中的调用约定（这是可能的吗？）。任何其他想法？

I believe that I need to clear the stack in my callback or change the calling convention in the DLL (is that possible?). Any other ideas?

推荐答案

检查您所使用的调用约定。

Check the calling conventions you are using.

 [UnmanagedFunctionPointer(CallingConvention.Cdecl)]

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