C / C++ / MFC

depView.obj : error LNK2001: unresolved external symbol "protected: int __thiscall CDepView::OnCreate(struct tagCREATESTRUCTA *)" (?OnCreate@CDepView@@IAEHPAUtagCREATESTRUCTA@@@Z)
Release/dep.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.

dep.exe - 2 error(s), 0 warning(s)

BEGIN_MESSAGE_MAP(CDepView, CPropertyView)
	ON_WM_CREATE()
	...
END_MESSAGE_MAP()

int CDepView::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
     ...
     return 0;
}

<br />
void __fastcall TForm1::Button1Click(TObect *Sender) <br />
{ <br />
TButton *Button = dynamic_cast<TButton *>(Sender); <br />
if (Button) <br />
    { <br />
    // do something if a button was pressed. <br />
    } <br />
else <br />
    { <br />
    // do something when a call was made <br />
    // passing a NULL value for  *Sender) <br />
    } <br />
} <br />

int main(int argc, char *argv[])
{      	
HINSTANCE lib = LoadLibraryA("C:\\mylib.dll");
	if (lib == NULL)
		printf("LoadLibraryA failed\n");
}

<code>SOCKET m_socket;
WSADATA wsaData;
int res;

res = WSAStartup(MAKEWORD(2,2), &wsaData);
if (res != NO_ERROR)
{
	printf("Error : WSAStartup() [%ld]\n", WSAGetLastError());
	return 1;
}
m_socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (m_socket == INVALID_SOCKET)
{
	printf("Error : socket() [%ld]\n", WSAGetLastError());
	WSACleanup();
	return 1;
}
...</code>

char *foo = "Hello world";
char *bar = new char [strlen(foo) + 1];