VC写的DLL给VB用，传送字符串

#define DLL_API extern "C" _declspec(dllexport) #include "dll.h" #include "stdio.h" #define MAX_BUFFER_SIZE 8096 char buffer[MAX_BUFFER_SIZE]; BOOL _stdcall addString(LPSTR a) { if (strlen(a)<MAX_BUFFER_SIZE-1) { strcpy(buffer,a); //printf("--addString: a=%s b=%s\n",a,b); //strcat(a,b); //printf("--addString: a=%s buffer=%s\n",a,buffer); return FALSE; } else return TRUE; } BOOL _stdcall getString(LPSTR a) { //if (strlen(a)<MAX_BUFFER_SIZE-1) //{ strcpy(a,buffer); //buffer[1023]='\0'; //printf("--getString:a=%s\n",a); return TRUE; //} //else //return FALSE; } int _stdcall getStringSize() { return strlen(buffer); }