C++ DLL變量爲vb.net exe

我有一個應用程序調用並將參數傳遞給C++ dll。我也有一個單獨的可執行文件在vb.net中編寫，我想將參數從C++ dll傳遞給vb.net可執行文件。我已經讀了很多關於這個，不知道什麼是最好的方式來完成這個。C++ DLL變量爲vb.net exe

我不一定需要特定的代碼，只是在正確的方向微調將有所幫助。

這是C++的DLL，我想在我的VB.NET應用程序的狀態結構。

#include "user.h" 
#include <windows.h> 
#include <atlstr.h> 
#include <conio.h> 

///////////////////////////////////// 
//card macros 
#define RANK(c)   ((c>>4)&0x0f) 
#define SUIT(c)   ((c>>0)&0x0f) 
#define ISCARDBACK(c) (c==0xff) 
#define ISUNKNOWN(c) (c==0) 
///////////////////////////////////// 

//////////////////////////////////// 
//consecutive states 
holdem_state m_holdem_state[256]; 
unsigned char m_ndx; 
//////////////////////////////////// 

p_getsym_t p_get_symbol; 

double getsym(int chair, const char* name, bool& iserr) 
{ 
    return (*p_get_symbol)(chair,name,iserr); 
} 

double getsym(const char* name) 
{ 
    bool iserr; 
    int mychair = (int) getsym(0,"userchair",iserr); 
    return getsym(mychair,name,iserr); 
} 

double process_query(const char* pquery) 
{ 
    if (pquery==NULL) 
     return 0; 

    if (strncmp(pquery,"dll$test",8)==0) 
     return getsym("random"); 

    if (strncmp(pquery,"dll$spend",9)==0) 
     return getsym("f$spend"); 

    if (strncmp(pquery,"dll$recurse",11)==0) 
     return getsym("dll$mynumber"); 

    if (strncmp(pquery,"dll$mynumber",12)==0) 
     return 12345.67; 

    if (strncmp(pquery,"dll$complex",11)==0) 
     return getsym("f$spend/25 * 1.1"); 

    return 0; 
} 

double process_state(holdem_state* pstate) 
{ 
    if (pstate!=NULL) { m_holdem_state[ (++m_ndx)&0xff ] = *pstate; } 

    _cprintf("state: %d\n", m_ndx&0xff); 

    return 0; 
} 

///////////////////////////////////////////////////// 
// user.dll entry point 
///////////////////////////////////////////////////// 
USERDLL_API double process_message (const char* pmessage, const void* param) 
{ 
    if (pmessage==NULL) { return 0; } 
    if (param==NULL) { return 0; } 

    if (strcmp(pmessage,"state")==0) 
    { 
     holdem_state *state = (holdem_state*) param; 
//  CString s; 
//  s.Format("<%s>\nPOTS: %.2f %.2f %.2f %.2f %.2f %.2f %.2f %.2f %.2f %.2f\nCOMMON: %d %d %d %d %d\n%d %d %d\n<%s> %d %.2f %d", 
//   state->m_title, 
//   state->m_pot[0], state->m_pot[1], state->m_pot[2], state->m_pot[3], state->m_pot[4], 
//   state->m_pot[5], state->m_pot[6], state->m_pot[7], state->m_pot[8], state->m_pot[9], 
//   state->m_cards[0], state->m_cards[1], state->m_cards[2], state->m_cards[3], state->m_cards[4], 
//   state->m_is_playing, state->m_is_posting, state->m_dealer_chair, 
//   state->m_player[4].m_name, state->m_player[4].m_name_known, state->m_player[4].m_balance, state->m_player[4].m_balance_known); 
//  MessageBox(NULL, s, "state", MB_OK); 

     return process_state((holdem_state*)param); 
    } 

    if (strcmp(pmessage,"query")==0) 
    { 
//  MessageBox(NULL, (LPCSTR) param, "query", MB_OK); 
     return process_query((const char*)param); 
    } 

    if (strcmp(pmessage,"pfgws")==0) 
    { 
//  MessageBox(NULL, "pfgws", "MESSAGE", MB_OK); 
     p_get_symbol = (p_getsym_t)param; 
     return 0; 
    } 

    if (strcmp(pmessage,"event")==0 && strcmp((const char *) param, "load")==0) 
    { 
//  MessageBox(NULL, "event-load", "MESSAGE", MB_OK); 
    } 

    if (strcmp(pmessage,"event")==0 && strcmp((const char *) param, "unload")==0) 
    { 
//  MessageBox(NULL, "event-unload", "MESSAGE", MB_OK); 
    } 

    return 0; 
} 
///////////////////////////////////////////////////// 

BOOL APIENTRY DllMain(HANDLE hModule, DWORD ul_reason_for_call, LPVOID lpReserved) 
{ 
    switch (ul_reason_for_call) 
    { 
     case DLL_PROCESS_ATTACH: 
      AllocConsole(); 
      break; 
     case DLL_THREAD_ATTACH: 
      break; 
     case DLL_THREAD_DETACH: 
      break; 
     case DLL_PROCESS_DETACH: 
      FreeConsole(); 
      break; 
    } 
    return TRUE; 
}

來源

2012-12-04 jmyns

extern "C" __declspec(dllexport) holdem_state* getHoldemState() { return &m_holdem_state; }

換句話說，你不能直接共享結構。您需要生成一個將返回值的導出。

來源

2012-12-04 03:12:08 Rob

C++ DLL變量爲vb.net exe

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