Подключение сетевого диска при нажатии на кнопку Button.

Unit1.cpp

//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------

void __fastcall TForm1::Button1Click(TObject *Sender)
{
NETRESOURCE nd;
ZeroMemory (&nd, sizeof(nd));
nd.dwType=RESOURCETYPE_DISK;
nd.lpLocalName="Z:";  //Буква диска
nd.lpRemoteName="\\\\192.168.100.88\\E";  //IP компа с расширенной папкой E. Вместо IP можно писать доменное имя.
WNetAddConnection2A(&nd,"000","3",NULL); //000-пароль к папке Е, 3-логин к папке E
}
//---------------------------------------------------------------------------

Unit1.h

//---------------------------------------------------------------------------

#ifndef Unit1H
#define Unit1H
//---------------------------------------------------------------------------
#include <Classes.hpp>
#include <Controls.hpp>
#include <StdCtrls.hpp>
#include <Forms.hpp>
//---------------------------------------------------------------------------
class TForm1 : public TForm
{
__published:	// IDE-managed Components
        TButton *Button1;
        void __fastcall Button1Click(TObject *Sender);
private:	// User declarations
public:		// User declarations
        __fastcall TForm1(TComponent* Owner);
};
//---------------------------------------------------------------------------
extern PACKAGE TForm1 *Form1;
//---------------------------------------------------------------------------
#endif