c++ - call to another function in a dll causes access violation -


okay i'm starting realize dll arn't simplest of things understand, i'm trying make dll vc6 compatible, got code working in vs2010 in trying work out how code work vc6 project i've found following issue:

my call dll looks this

mydll::connect();

when try , run program uses function, starts out fine gets function call i.e. 

void connect() { hello();    //0xc0000005: access violation }  void hello() {     int = 1; }

the disassembly looks this:

->  00000000   ???     00000001   ???     00000002   ???     00000003   ???     00000004   ???     00000005   ???     00000006   ???     00000007   ???     00000008   ???     00000009   ???     etc...

you didn't exported function .....a program not permitted access function in dll unless function registered exported function. should prototype this

to export function inside class function should 1- public member. 2- static member

class mydll{    public:    static void connect(); } //then redeclare #ifdef _cplusplus extern "c"{ #endif __declspec(dllexport) void  mydll::connect(){ //todo } #ifdef _cplusplus } #endif

do class member function want export

this example

creating simple dynamic link library example


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