1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
21:
22:
23:
24:
25:
26:
27:
28:
29:
30:
31:
32:
33:
34:
35:
36:
37:
38:
39:
40:
41:
42:
43:
44:

using System;
using System.Drawing;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace Scanner{
  public class SteuerelementeForm : System.Windows.Forms.Form 
  {
    [DllImport("dialog_dll.dll")]
    public static extern void opendialog(char path);
    private Button load;
    
    public SteuerelementeForm(){
      Name = "ScannerForm";
      Text = "ice-Basic Scanner";
      Font = new Font("Courier New", 10F, (FontStyle.Bold), GraphicsUnit.Point, ((System.Byte)(0)));
      FormBorderStyle = FormBorderStyle.FixedDialog;
      Location = new Point(0,0);
      Size = new Size(500,400);
      Komponenten();
    }
    private void Komponenten(){
      load = new Button();
      
      load.Location = new Point(400,8);
      load.Size = new Size(80,20);
      load.Text = "Laden...";
      load.Click += new EventHandler(opendialog);
      
      Controls.Add(load);
    } 
    private void opendialog(object sender, EventArgs e)
    {
      opendialog(Convert.ToChar(Application.StartupPath));
    }  
    public static void Main(){
      try{
        Application.Run(new SteuerelementeForm());
      }catch(Exception ex){
        MessageBox.Show(ex.Message);
      }
    }
  }
}                    

1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
21:
22:
23:
24:
25:
26:
27:
28:
29:
30:
31:
32:
33:
34:
35:
36:
37:
38:
39:
40:
41:
42:
43:
44:
45:
46:
47:
48:
49:
50:
51:
52:
53:
54:
55:
56:
57:
58:
59:
60:
61:
62:
63:
64:
65:
66:
67:
68:
69:
70:
71:
72:
73:
74:
75:
76:
77:
78:
79:
80:
81:
82:
83:
84:

//main.cpp
#include "main.h"

BOOL LoadText(LPCTSTR pszFileName)
{
   HANDLE hFile;
   BOOL bSuccess = FALSE;

   hFile = CreateFile(pszFileName, GENERIC_READ,
                       FILE_SHARE_READ, NULL,
                       OPEN_EXISTING, 0, NULL);
   if(hFile != INVALID_HANDLE_VALUE)
      {
         DWORD dwFileSize;

         dwFileSize = GetFileSize(hFile, NULL);
         if(dwFileSize != 0xFFFFFFFF)
         {
            LPSTR pszFileText;

           pszFileText=(char *)GlobalAlloc(GPTR, dwFileSize + 1);
            if(pszFileText != NULL)
            {
               DWORD dwRead;
               if(ReadFile( hFile, pszFileText, dwFileSize,
                             &dwRead, NULL )   )
                  {
                     pszFileText[dwFileSize] = '\0';
                  }
               GlobalFree(pszFileText);
            }
         }
         CloseHandle(hFile);
      }
   return bSuccess;
}
void DLL_EXPORT opendialog(const char * path)
{
    OPENFILENAME ofn;
    char szFileName[MAX_PATH] = "";

    ZeroMemory(&ofn, sizeof(ofn));

    ofn.lStructSize = sizeof(ofn);
    ofn.lpstrFilter = "iceBasic (*.ib)\0*.ib\0";
    ofn.lpstrFile = szFileName;
    ofn.nMaxFile = MAX_PATH;
    ofn.Flags = OFN_EXPLORER | OFN_FILEMUSTEXIST |
                OFN_HIDEREADONLY;
    ofn.lpstrDefExt = "IceBasic";

    if(GetOpenFileName(&ofn))
       {
          if(LoadText(szFileName))
             {
                 MessageBox( NULL, "Laden erfolgreich",
                      "IceBasic",MB_ICONEXCLAMATION | MB_OK  );
             }
       }
}

BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
{
    switch (fdwReason)
    {
        case DLL_PROCESS_ATTACH:
            // attach to process
            // return FALSE to fail DLL load
            break;

        case DLL_PROCESS_DETACH:
            // detach from process
            break;

        case DLL_THREAD_ATTACH:
            // attach to thread
            break;

        case DLL_THREAD_DETACH:
            // detach from thread
            break;
    }
    return TRUE; // succesful
}                    

1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
21:
22:
23:
24:
25:
26:
27:
28:
29:
30:

//main.h
#ifndef __MAIN_H__
#define __MAIN_H__

#include <windows.h>
#include <string.h>

/*  To use this exported function of dll, include this header
 *  in your project.
 */

#ifdef BUILD_DLL
    #define DLL_EXPORT __declspec(dllexport)
#else
    #define DLL_EXPORT __declspec(dllimport)
#endif


#ifdef __cplusplus
extern "C"
{
#endif

void DLL_EXPORT opendialog(char path);

#ifdef __cplusplus
}
#endif

#endif // __MAIN_H__                    

1:
2:

[DllImport("dialog_dll.dll")]
public static extern void opendialog(char path);                    

1:
2:
3:
4:

void DLL_EXPORT opendialog(const char * path)
{
 ....
}                    

1:

void DLL_EXPORT opendialog(const char * path);                    

1:
2:

[DllImport("dialog_dll.dll")]
public static extern void opendialog(string path);