Using C# (and .NET) from FWH not working(?)

[vilian]

But, Is it really working with harbour ?
The test of Ricardo didn't work until now "

[AntoninoP]

hello,
I tryed the dotnet sample, what I get is:

Code: Select all | Expand

┌────────────────────────────────────────────────────────────────────────────┐
?FiveWin for Harbour 19.09 (MSVC++) Sep. 2019     Harbour development power │▄
?(c) FiveTech 1993-2019 for Microsoft Windows 9X/NT/200X/ME/XP/Vista/7/8/10 │█
└────────────────────────────────────────────────────────────────────────────┘?
  ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀?
Compiling...
Harbour 3.2.0dev (r1711221033)
Copyright (c) 1999-2016, http://harbour-project.org/
Compiling 'dotnet.prg' and generating preprocessed output to 'dotnet.ppo'...
Lines 4947, Functions/Procedures 1
Generating C source output to 'dotnet.c'... Done.
Microsoft (R) C/C++ Optimizing Compiler versione 19.16.27034 per x86
Copyright (C) Microsoft Corporation. Tutti i diritti  sono riservati.

dotnet.c
FiveH32.lib(DOTNET_.obj) : error LNK2001: simbolo esterno _HB_FUN_CLSID_CLRMETAHOST non risolto
FiveH32.lib(DOTNET_.obj) : error LNK2001: simbolo esterno _HB_FUN_IID_ICLRMETAHOST non risolto
FiveH32.lib(DOTNET_.obj) : error LNK2001: simbolo esterno _HB_FUN_CLRMETAHOSTGETRUNTIME non risolto
FiveH32.lib(DOTNET_.obj) : error LNK2001: simbolo esterno _HB_FUN_CLRRUNTIMEINFOGETINTERFACE non risolto
FiveH32.lib(DOTNET_.obj) : error LNK2001: simbolo esterno _HB_FUN_CLRRUNTIMEHOSTSTART non risolto
FiveH32.lib(DOTNET_.obj) : error LNK2001: simbolo esterno _HB_FUN_CLRRUNTIMEHOSTEXECUTE non risolto
dotnet.exe : fatal error LNK1120: 6 esterni non risolti
* Linking errors *

[vilian]

I Think it's not working yet.

[cnavarro]

But, Is it really working with harbour ?
The test of Ricardo didn't work until now "

I used Borland 7 Compiler
Antonino, with VS you are right, not run now. I'm investigating why.
DotNet run OK for Harbour? YES
Can any function or method defined in a C # DLL be used? Yes, if all the requirements are met
What limitations do you currently have? It does not yet allow you to return values to Fivewin. He needs a little more work and I haven't had time to devote.
So how can I return a value? You can create a txt file with the value to return from C # and read it later from Fivewin. It is not the best but it is a possibility.

Let's see an example of usability
We create a .CS file that we will call for example datagrid0.cs

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using System.Windows.Forms;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Runtime.InteropServices;
using System.Data;
using System.Data.OleDb;

namespace conexion
{
    public class myGrid
    {
        public static int connectar( string a )
        {
             MessageBox.Show( a );
            string connetionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:\\fwh\\fwhteam\\samples\\xbrtest.mdb;";
            string sql = "SELECT * FROM Customer";
             MessageBox.Show( "String of connection and command sql" );

            OleDbConnection connection = new OleDbConnection(connetionString);
             MessageBox.Show( "Connection OK" );

            OleDbCommand command = new OleDbCommand(sql, connection);
            connection.Open();
             MessageBox.Show( "Open connection" );

            OleDbDataAdapter da = new OleDbDataAdapter(command);
            DataSet ds = new DataSet();
            da.Fill( ds, "Customers_table");
            MessageBox.Show( "Customer" );

            MessageBox.Show( ds.Tables[0].Rows[0]["First"].ToString() );
            connection.Close();
            return 0;

        }
    }
}
 

Now we execute the following command en un fichero .bat ( buildcs0.bat ).
I have commented on the first line because I use the link to the compiler console that you install when you install any version of Visual Studio
This way we don't depend on the compiler version of Visual Studio

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rem call "%ProgramFiles(x86)%\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvarsall.bat" x86
csc /out:datagrid.dll /target:library datagrid0.cs
 

It's time to create our prg

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#include "FiveWin.ch"

Static cDll       := "datagrid.dll"
Static cWorkSpace := "conexion.myGrid"
Static cMethod    := "connectar"

//----------------------------------------------------------------------------//

function Main()

   local oNet

   oNet   := TDotNet():New()
   oNet:Execute( cDll, cWorkSpace, cMethod, "Conectar" )
   //? oNet:GetResult(), oNet:GetReturnValue(), oNet:GetValueReturn()

   ? oNet:GetNetError()
   oNet:End()

return nil

//----------------------------------------------------------------------------//
 

If everything went well, you should not return any errors.

[AntoninoP]

I am doing it me own, I think on MSVC it is not possible include the support on the onnicomprensive FiveWin library, because the library needs to be linked with CLR support.
So I am creating a DLL that exposes the .NET interface, in a similar way to OLE support.
I still have some issue with pcode support, but current result are cheering

[Jimmy]

hi,

i have a DotNet DLL as AktiveX with IDispatch Interface using with Xbase++
perhaps this Concept help your with you DotNet DLL

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using System; 
using System.Collections;
using System.Drawing;
using System.Windows.Forms;
using System.Runtime.InteropServices;
namespace MyForm.AX
{
    [ProgId("MyForm.AX.Form1")]
    [ClassInterface(ClassInterfaceType.AutoDual)]
    public partial class Form1x : System.Windows.Forms.UserControl
    {
        public Form1x()
        {
            InitializeComponent();
        }

        #region field definitions
        ...
        #region get-set Com-Controls

        public string text1
        {
            get { return this.textBox1.Text; }
            set { this.textBox1.Text = value; }
        }
        public string text2
        {
            get { return this.textBox2.Text; }
            set { this.textBox2.Text = value; }
        }
        public string text3
        {
            get { return this.textBox3.Text; }
            set { this.textBox3.Text = value; }
        }
        public string text4
        {
            get { return this.textBox4.Text; }
            set { this.textBox4.Text = value; }
        }
        public string text5
        {
            get { return this.textBox5.Text; }
            set { this.textBox5.Text = value; }
        }
        public bool check1
        {
            get { return this.checkBox1.Checked; }
            set { this.checkBox1.Checked = value; }
        }
        public string combo1
        {
            get { return this.comboBox1.Text; }
            set { this.comboBox1.Text = value; }
        }

        public string addItemCombo1
        {
            set { this.comboBox1.Items.Add(value);}
        }

        #endregion
        ...
 

[Horizon]

+1

hello,
I tryed the dotnet sample, what I get is:

Code: Select all | Expand

┌────────────────────────────────────────────────────────────────────────────┐
?FiveWin for Harbour 19.09 (MSVC++) Sep. 2019     Harbour development power │▄
?(c) FiveTech 1993-2019 for Microsoft Windows 9X/NT/200X/ME/XP/Vista/7/8/10 │█
└────────────────────────────────────────────────────────────────────────────┘?
  ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀?
Compiling...
Harbour 3.2.0dev (r1711221033)
Copyright (c) 1999-2016, http://harbour-project.org/
Compiling 'dotnet.prg' and generating preprocessed output to 'dotnet.ppo'...
Lines 4947, Functions/Procedures 1
Generating C source output to 'dotnet.c'... Done.
Microsoft (R) C/C++ Optimizing Compiler versione 19.16.27034 per x86
Copyright (C) Microsoft Corporation. Tutti i diritti  sono riservati.

dotnet.c
FiveH32.lib(DOTNET_.obj) : error LNK2001: simbolo esterno _HB_FUN_CLSID_CLRMETAHOST non risolto
FiveH32.lib(DOTNET_.obj) : error LNK2001: simbolo esterno _HB_FUN_IID_ICLRMETAHOST non risolto
FiveH32.lib(DOTNET_.obj) : error LNK2001: simbolo esterno _HB_FUN_CLRMETAHOSTGETRUNTIME non risolto
FiveH32.lib(DOTNET_.obj) : error LNK2001: simbolo esterno _HB_FUN_CLRRUNTIMEINFOGETINTERFACE non risolto
FiveH32.lib(DOTNET_.obj) : error LNK2001: simbolo esterno _HB_FUN_CLRRUNTIMEHOSTSTART non risolto
FiveH32.lib(DOTNET_.obj) : error LNK2001: simbolo esterno _HB_FUN_CLRRUNTIMEHOSTEXECUTE non risolto
dotnet.exe : fatal error LNK1120: 6 esterni non risolti
* Linking errors *

[Horizon]

Hi,

Where is TDotNet class?

[cnavarro]

Not published. Is in libs of Fwh

[Horizon]

Not published. Is in libs of Fwh

Hi Mr. Navarro,
Can you help me to compile with msvc?

[cnavarro]

What do you need?

[AntoninoP]

I was able to call .net code from harbour using Visual studio compiler, creating a C++ CLR project with managed code using HB_FUNC

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#define WIN32_LEAN_AND_MEAN             // Escludere gli elementi usati raramente dalle intestazioni di Windows
// File di intestazione di Windows
#include <windows.h>
#include <objbase.h>

#include <hbapi.h>
#include <hbapierr.h>
#include <hbapiitm.h>
#include <hbinit.h>
#include <hbstack.h>
#include <hbvmpub.h>

using namespace System;
using namespace System::Reflection;
using namespace System::Runtime::InteropServices;
using namespace System::IO;

// convert a .NET string to a C by using the Harbor memory manager
static char* FromString(String^ src);
// spawns a harbor error starting from a .NET one
static void HandleError(Exception^ e);

HB_FUNC(SHOWDIALOG) {
    try { //I did not check if the calls are successful, everything is taken from the catch and brought to harbor.
        CoInitializeEx(0, COINIT_APARTMENTTHREADED);
        // get the absolute path to the dll
        String^ dllPath = Path::GetFullPath(gcnew String(hb_parc(1)));
        // load it
        Assembly^ pDll = Assembly::LoadFile(dllPath);
        //Console::WriteLine(pDll ? "dll loaded" : "dll not loaded");
        // get the type 
        String ^typeName = gcnew String(hb_parc(2));
        Type^ objType = pDll->GetType(typeName);
        //Console::WriteLine(objType ? "type found" : "type not found");
        // instance it
        //Console::WriteLine(System::Threading::Thread::CurrentThread->ApartmentState);
        Object^ tmp = pDll->CreateInstance(typeName);
        //Console::WriteLine(tmp? "object created" : "object not object");
        // get the method
        MethodInfo^ showDlg = objType->GetMethod("ShowDialog");
        //Console::WriteLine(showDlg  ? "method found" : "method not found");
        // call it
        array<Object^>^ params = nullptr;
        //if (showDlg->GetParameters()->Length > 0) { TODO
        //  array<ParameterInfo^>^ pInfo = showDlg->GetParameters();
        //  int n = hb_pcount()-2;
        //  for (int i = 0; i < n; i++) {
        //
        //  }
        //}
        showDlg->Invoke(tmp, params);
        //Console::WriteLine("method called");
    }
    catch (Exception^ e) {
        // if all goes well it does not arrive here
        HandleError(e);
    }
    hb_ret();
}

static char* FromString(String^ src) {
    Text::Encoding^ ascii = Text::Encoding::ASCII;
    cli::array<unsigned char>^ bytes = ascii->GetBytes(src);
    char* dest = (char*)hb_xgrab(bytes->Length);
    Marshal::Copy(bytes, 0, IntPtr(dest), bytes->Length);
    return dest;
}

static void HandleError(Exception^ e) {
    if (e->InnerException)
        e = e->InnerException;
    PHB_ITEM pError = hb_errRT_New(ES_ERROR, "Net2HB", e->HResult, 0,
        FromString(e->Message),FromString(e->Source), 0, EF_NONE);
    if (hb_pcount() != 0) {
        /* HB_ERR_ARGS_BASEPARAMS */
        PHB_ITEM pArray = hb_arrayBaseParams();
        hb_errPutArgsArray(pError, pArray);
        hb_itemRelease(pArray);
    }
    hb_errPutFileName(e, FromString(e->StackTrace));
    hb_errLaunch(pError);
    hb_errRelease(pError);
}

#pragma unmanaged

// HB_FS_FIRST solo alla prima :)
HB_INIT_SYMBOLS_BEGIN(hb_vm_SymbolInit_Net2HB)
{ "SHOWDIALOG", { HB_FS_PUBLIC | HB_FS_FIRST | HB_FS_LOCAL }, { HB_FUNCNAME(SHOWDIALOG) }, NULL }
};
static PHB_SYMB symbols;
//HB_INIT_SYMBOLS_END(hb_vm_SymbolInit_Net2HB)


BOOL WINAPI DllMain(
    HINSTANCE hinstDLL,  // handle to DLL module
    DWORD fdwReason,     // reason for calling function
    LPVOID lpReserved)  // reserved
{
    // Perform actions based on the reason for calling.
    switch (fdwReason)
    {
    case DLL_PROCESS_ATTACH:
        // in CLR static initialization does not work
        symbols = hb_vmProcessSymbols(symbols_table, (HB_USHORT)HB_INIT_SYMBOLS_COUNT, "", 0L, 0x0000);
        break;

        // case DLL_THREAD_ATTACH: // Do thread-specific initialization.
        //  break;
        // case DLL_THREAD_DETACH: // Do thread-specific cleanup.
        //  break;
        // case DLL_PROCESS_DETACH: // Perform any necessary cleanup.
        //  break;
    }
    return TRUE;  // Successful DLL_PROCESS_ATTACH.
}

this code calls a dll I made with a class and a method "ShowDialog"

[Antonio Linares]

Antonino,

thats great!

Are you able to build it using hbmk2 ?

[AntoninoP]

I did not try, I used Visual studio. Maybe it is enough add /clr and some include... on property I see these options:

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/Yu"stdafx.h" /GS /W3 /Zc:wchar_t /I"c:\harbour\include" /Zi /Od /Fd"x64\Debug\vc142.pdb" /Zc:inline /fp:precise /D "HB_DYNLIB" /D "_DEBUG" /D "_WINDLL" /D "_UNICODE" /D "UNICODE" /errorReport:prompt /WX- /Zc:forScope /clr /FU"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5\mscorlib.dll" /FU"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5\System.Data.dll" /FU"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5\System.dll" /FU"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5\System.Xml.dll" /MDd /FC /Fa"x64\Debug\" /EHa /nologo /Fo"x64\Debug\" /Fp"x64\Debug\DotNetCaller.pch" /diagnostics:column

for C++. and:

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/OUT:"C:\TL\TLPosWin\DotNetCaller\x64\Debug\DotNetCaller.dll" /MANIFEST /NXCOMPAT /PDB:"C:\TL\TLPosWin\DotNetCaller\x64\Debug\DotNetCaller.pdb" /DYNAMICBASE "hbmainstd.lib" "hbmainwin.lib" "hbcplr.lib" "harbour-32.lib" "kernel32.lib" "user32.lib" "gdi32.lib" "winspool.lib" "comdlg32.lib" "advapi32.lib" "shell32.lib" "ole32.lib" "oleaut32.lib" "uuid.lib" "odbc32.lib" "odbccp32.lib" /FIXED:NO /DEBUG:FULL /DLL /MACHINE:X64 /INCREMENTAL /PGD:"C:\TL\TLPosWin\DotNetCaller\x64\Debug\DotNetCaller.pgd" /MANIFESTUAC:"level='asInvoker' uiAccess='false'" /ManifestFile:"x64\Debug\DotNetCaller.dll.intermediate.manifest" /ERRORREPORT:PROMPT /NOLOGO /LIBPATH:"C:\Harbour64\lib\win\msvc64" /ASSEMBLYDEBUG /TLBID:1

for linker

[Horizon]

Not published. Is in libs of Fwh

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³ FiveWin for Harbour 20.06 (VS32bits) Jun. 2020  Harbour development power  ³Ü
³ (c) FiveTech 1993-2020 for Microsoft Windows 9X/NT/200X/ME/XP/Vista/7/8/10 ³Û
ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙÛ
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**********************************************************************
** Visual Studio 2019 Developer Command Prompt v16.7.3
** Copyright (c) 2020 Microsoft Corporation
**********************************************************************
[vcvarsall.bat] Environment initialized for: 'x86'
Compiling...
Harbour 3.2.0dev (r1904111533)
Copyright (c) 1999-2019, https://harbour.github.io/
Compiling 'dotnet2.prg' and generating preprocessed output to 'dotnet2.ppo'...

Lines 4957, Functions/Procedures 1
Generating C source output to 'dotnet2.c'... Done.
dotnet2.c
FiveH32.lib(DOTNET_.obj) : error LNK2001: ‡”zmlenmemiŸ dŸ sembol _HB_FUN_CLSID_CLRMETAHOST
FiveH32.lib(DOTNET_.obj) : error LNK2001: ‡”zmlenmemiŸ dŸ sembol _HB_FUN_IID_ICLRMETAHOST
FiveH32.lib(DOTNET_.obj) : error LNK2001: ‡”zmlenmemiŸ dŸ sembol _HB_FUN_CLRMETAHOSTGETRUNTIME
FiveH32.lib(DOTNET_.obj) : error LNK2001: ‡”zmlenmemiŸ dŸ sembol _HB_FUN_CLRRUNTIMEINFOGETINTERFACE
FiveH32.lib(DOTNET_.obj) : error LNK2001: ‡”zmlenmemiŸ dŸ sembol _HB_FUN_CLRRUNTIMEHOSTSTART
FiveH32.lib(DOTNET_.obj) : error LNK2001: ‡”zmlenmemiŸ dŸ sembol _HB_FUN_CLRRUNTIMEHOSTEXECUTE
dotnet2.exe : fatal error LNK1120: 6 ‡”zmlenmemiŸ dŸlar
* Linking errors *