dllBridge.h

////////////////////////////////////////////////////////////////////////////////////
//                                                                                //
//   dllBridge@gmail.com
//
//   24 Dec 2021  (14:52)
//   18 Sep 2020  (12:14)
//


#ifdef     _MSC_VER
#define    _CRT_SECURE_NO_WARNINGS
#endif

#include    <stdio.h>
#include   <string.h>
#include   <locale.h>                                  //  Здесь живёт setlocale()
#include  <windows.h>




HINSTANCE                hDll;

char           szPathDLL[111],
              szPathBase[100] = "C:\\dllBridge",                                       //  Default folder
               szWLError[201];

int             ProgramNumber = 299,                                                         //
                      nPerson = 214,                                                         //      User number
              (*Transit)[100];

//////////////////////////////
int*   (*__getAdrBOSS)(int n);
int    (*__DisConnect)(int n);
int dllBridge(const char *sz);





#ifdef __cplusplus   // g++  (C++) code + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +

namespace
{
   struct WLMain
   {

       int  res;

       ///////////////////////////////////////////////                           Transit[3][17] = 317;
       WLMain()                                     //                   printf("\nres = %d \n", res);
       {

              res =    dllBridge(szPathBase);
           if(res < 1) printf("%s   \n", szWLError);
           else        printf("The dllBridge.dll was successfully connected.\n");
       }

       ///////////////////////////////////////////////
      ~WLMain()                                     //
       {
           if(res) __DisConnect(ProgramNumber);
       }

   } Obj;

}

#endif                   // #else        // C   code + + + + + + + + + + + + + + + + +





///////////////////////////////////////////////////////////////////////////////////////
int dllBridge(const char *sz)                                                        //
{

    if(hDll) FreeLibrary(hDll);                                                      //  To reconnect DLL.
    else     setlocale(LC_ALL, "Rus");                  //  The Cyrillic alphabet to a console application

    char   sz1[201];
    strcpy(sz1, sz);
    strcat(sz1, "\\dllBridge.dll");


    hDll = LoadLibrary(sz1);                                                         //

    int res;

    if(hDll == 0)
    {
       res = 0;
       goto L_02;
    }

  __getAdrBOSS = (int*(*)(int))GetProcAddress(hDll,   "__getAdrBOSS");

    Transit = (int(*)[100])__getAdrBOSS(ProgramNumber);     //   Second_Number);//

    if(     Transit ==  0) { res = -2; goto L_02; }                             //  All connections are busy.
    if((int)Transit == -1) { res = -1; goto L_02; }      //  A program with this number is already connected.

  __DisConnect =   (int (*)(int))GetProcAddress(hDll, "__DisConnect");

    strcpy(szPathDLL, sz1);


    Transit[10][0] = 2;


    memcpy(&Transit[10][1], "Console project", 15);  //  ! ! ! //memcpy(&Transit[10][1], szProjectInfo[1], 23);

    strcpy(szPathBase, sz);   //  szPathBase

return       (int)hDll ;
L_02: FreeLibrary(hDll);


    switch(res)
    {

        case   0:  strcpy(szWLError, "I can't load the library (dll)");                     break;
        case  -1:  strcpy(szWLError, "A program with this number is already connected.");   break;
        case  -2:  strcpy(szWLError, "All connections are busy.");

    }   return res;
}