Thank you , This is realy helping.

But just one thing is missing. I like to call the format without the dialog window.

I am creating a application that drive a Autoloader ( It a mouster that write on disk and print on the lable ) and we want to format the disk before we write on it. This process can run over night and the user must not do any input.

Is there a way to call this API function without the dialop showing?
Can you tell me wher in MSDN you found the information on this?

>>The following API call would display the Windows standard format dialog:
>
>>Set Library To FoxTools Additive
>>Declare Integer SHFormatDrive in Shell32.DLL ;
>> Integer HWND, Integer Drive, Integer FmtID, Integer Options
>>SHFormatDrive( _WhToHwnd(_WMainWind()), 0, 0xFFFF,0)