急,求教:DELPHI 转成 VB(200分)

  • 主题发起人 主题发起人 ywan
  • 开始时间 开始时间
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ywan

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各位好,
小弟有想把一段DELPHI程序转成VB,但不知什么原因,我不能获得结构体的数据。
DELPHI程序如下:
代码:
type TDeliver = procedure(deliver: DeliverStr);
type TReport  = procedure(Report: ReportStr);
{$R *.DFM}
//StartUp 启动SGIP.DLL
function StartUp(cLocalIp: pchar;
iLocalPort: integer;
cSmgIp: pchar;
iSmgPort: integer;
cLoginName,cPassword: pchar;
  lSocketTimeOut,lMTTimeOut,iSrcNode,lMTThread,lMaxListNode,lMTMaxRetryTime,lMOThread: integer;
  deliver: TDeliver;
report: TReport;
bb,cc: pointer): integer;stdcall;external 'SGIP.DLL' name 'Startup';
procedure Deliver(FDeliver: DeliverStr);
var
  MsgContent: string;
  cTemp: char;
  iLength, iCount: integer;
  MsgArray: array of char;
begin
  with Fm_Demodo
  begin
    //ASCII字符
    if FDeliver.messagecoding = '0' then
    begin
      MsgContent := FDeliver.messagecontent;
      mmShow.Lines.Append('手机号:' + FDeliver.usernumber + ';内容:' + MsgContent);
    end
    //GBK编码、Unicode编码,需要把高低位调换
    else
 if (FDeliver.messagecoding = '15') or (FDeliver.messagecoding = '8') then
    begin
      iLength := FDeliver.messagelength;
      SetLength(MsgArray, iLength);
      for iCount := 0 to iLength - 1do
      begin
        MsgArray[iCount] := FDeliver.MessageContent[iCount];
      end;
      for iCount := 0 to iLength - 1do
      begin
        cTemp := MsgArray[iCount];
        MsgArray[iCount] := MsgArray[iCount+1];
        MsgArray[iCount+1] := CTemp;
      end;
      for iCount := 0 to iLength - 1do
      begin
        MsgContent := MsgContent + MsgArray[iCount];
      end;
      mmShow.Lines.Append('手机号:' + FDeliver.usernumber + ';内容:' + MsgContent);
      SetLength(MsgArray, 0);
    end;
  end;
end;
//启动API
function TFm_Demo.StartAPI: integer;
var
  CurrentDir, TempFile: string;
begin
  CurrentDir := ExtractFileDir(ParamStr(0));
  TempFile := CurrentDir + '/sgip.ini';
  if not FileExists(TempFile) then
  begin
    SayWarning(cStartError);
    Exit;
  end
  else
 begin
    mmShow.Lines.LoadFromFile(TempFile);
    LocalIP := mmShow.Lines.Values['LocalIP'];
    LocalPort := StrToInt(mmShow.Lines.Values['LocalPort']);
    SmgIp := mmShow.Lines.Values['SmgIP'];
    SmgPort := StrToInt(mmShow.Lines.Values['SmgPort']);
    LoginName := mmShow.Lines.Values['LoginName'];
    Password := mmShow.Lines.Values['Password'];
    SrcNode := StrToInt(mmShow.Lines.Values['SrcNode']);
    Result := StartUp(PChar(LocalIP), LocalPort, PChar(SmgIP), SmgPort, PChar(LoginName), PChar(Password), 30, 60, SrcNode, 1, 5000, 5, 1,
      Deliver, Report, nil, nil);
  end;
end;
procedure TFm_Demo.btnConnectClick(Sender: TObject);
begin
  if StartAPI = -1 then
    SayError('启动API出错!请检查参数配置是否正确!')
  else
 mmShow.Lines.Append('连接网关成功!');
end;
我写的VB程序如下:
代码:
Option Explicit
Public Type DeliverStr
      sequencenumber1 As Long
      sequencenumber2 As Long
      sequencenumber3 As Long
      usernumber(22) As Byte
      spnumber(22) As Byte
      tp_pid As Byte
      tp_udhi As Byte
      messagecoding As Byte
      messagelength As Long
      messagecontent(160) As Byte
End Type

Public Type ReportStr
     sequencenumber1 As Long
     sequencenumber2 As Long
     sequencenumber3 As Long
     usernumber(22) As Byte
     state As Byte
     errcode As Byte
End Type
Private Declare Function Startup Lib "SGIP.dll" (ByRef cLocalIp As String, _
                                                       ByVal iLocalPort As Long, _
                                                       ByRef cSmgIp As String, _
                                                       ByVal iSmgPort As Long, _
                                                       ByRef cLoginName As String, _
                                                       ByRef cPassword As String, _
                                                       ByVal lSocketTimeOut As Long, _
                                                       ByVal lMTTimeOut As Long, _
                                                       ByVal iSrcNode As Long, _
                                                       ByVal lMTThread As Long, _
                                                       ByVal lMaxListNode As Long, _
                                                       ByVal lMTMaxRetryTime As Long, _
                                                       ByVal lMOThread As Long, _
                                                       ByRef Deliver As Variant, _
                                                       ByRef Report As Variant, _
                                                       ByRef Response As Variant, _
                                                       ByRef Mterror As Variant) As Long
                                                       
                                                       
Const StringLocalIP = "192.168.1.10"
Const StringLocalPort = 9881
Const StringSmgIP = "192.168.1.10"
Const StringSmgPort = 8801
Const LoginName = "polowan"
Const Password = "wanxiaojun"
Const SocketTimeOut = 30
Const MTTimeOut = 30
Const SrcNode = 350001
Const MTThread = 100
Const MaxListNode = 1
Const MTMaxRetryTime = 50
Const MOThread = 100

‘回调函数
Public Function fProcessDeliver(ByRef fDeliver As DeliverStr) As Long
    watchform.txtdeliver.Text = fDeliver.messagecoding
    fProcessDeliver = 1
End Function

’调用API
Private Sub butlink_Click()
result = Startup(StringLocalIP, StringLocalPort, StringSmgIP, StringSmgPort, LoginName, Password, _
                MTTimeOut, 120, SrcNode, 50, 30, MTMaxRetryTime, 100, _
               AddressOf sgipmodule.fProcessDeliver, AddressOf sgipmodule.fProcessReport, AddressOf sgipmodule.fProcessResponse, AddressOf sgipmodule.fProcessMTerror)
If result <> -1 then
txtsend.
Text = Now &amp;
": 连接成功!" &amp;
Chr(13) &amp;
Chr(10) &amp;
"连接状态值:" &amp;
CStr(result) &amp;
Chr(13) &amp;
Chr(10)
else
txtsend.
Text = Now &amp;
": 连接失败!" &amp;
Chr(13) &amp;
Chr(10)
End If
End Sub
当程序运行到 : 回调函数 “watchform.txtdeliver.Text = fDeliver.messagecoding”语句时程序就不再运行,或出现
“内存不能为read”的错误,
请问:这是什么问题?结构体作为回调函数的参数时要怎样处理?谢谢各位!
 
请各位多多帮忙!谢谢
 
恳请各位高手多多帮忙?
 
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