Problema con funcion

[giulichajari]

Bueno he conseguido que me muestre una cosa por lo menos..

Los "DRIVE" son Defines...

Código Delphi [-]
#include 
#include 
#include <string.h>
#include 
#define DRIVE_UNKNOWN 0
#define DRIVE_NO_ROOT_DIR 1
#define DRIVE_REMOVABLE 2
#define DRIVE_FIXED 3
#define DRIVE_REMOTE 4
#define DRIVE_CDROM 5
#define DRIVE_RAMDISK 6
#pragma hdrstop
#pragma package(smart_init)
#pragma resource "*.dfm"
#include "Unit1.h"
#include 
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------

void __fastcall TForm1::Button1Click(TObject *Sender)
{
        AnsiString temp;
        char Drive[256];
        AnsiString drive = DriveComboBox1->Drive; //EditDrive->Text;
        StrCopy(Drive,drive.c_str());
        StrCat(Drive,":\\");



        unsigned int DriveType = GetDriveType(Drive);
switch (DriveType)
    {
        case 1 : temp = "No root directory"; break;
        case 2 : temp = "Removable"; break;
        case 3 : temp = "Fixed"; break;
        case 4 : temp ="Remote (network) drive"; break;
        case 5 : temp = "CD-ROM"; break;
        case 6 : temp = "RAM disk"; break;
        default: temp = "Unknown"; return;
     }
        LabelDriveType->Caption = temp;
        temp = "";

El caso ahora es que el resto del codigo no funciona correctamente, porque me mustra 0 o desconocido.
Solo logro ver el tipo de volumen.