我正在尝试使用其驱动器号获取一些有效的代码来获取 USB 驱动器的供应商、序列号和型号。我搜索了很多并找到了几种解决方案。但我无法确定哪一个是最好的。
第一个在这里。使用 JEDI 的 hid.pas,但我不知道如何将它与单个驱动器一起使用。特别是,功能GetHidDeviceInfo
非常有趣,但需要符号链接而不是驱动器号。我试图邀请驱动器号的符号链接无济于事。
第二个在这里。使用看起来不是很干净的 WMI。我的经验告诉我,WMI 并不适用于所有 PC。该代码在我自己的笔记本电脑上不起作用,显示“RPC 服务器不可用”。
请就实现目标的最佳方式向我提出建议。还有其他方法吗?
更新:我发布了一些示例代码,结合了下面评论的结果。
{$APPTYPE CONSOLE}
uses
Windows, Messages, SysUtils, Variants;
type
PHIDDAttributes = ^THIDDAttributes;
HIDD_ATTRIBUTES = record
Size: ULONG; // size of structure (set before call)
VendorID: Word;
ProductID: Word;
VersionNumber: Word;
//
// Additional fields will be added to the end of this structure.
//
end;
THIDDAttributes = HIDD_ATTRIBUTES;
THIDUSBDeviceInfo = Record { contains interface level information of each device}
SymLink : String;
BufferSize : Word;
Handle : THandle;
VID : DWord;
PID : DWord;
VersionNumber : Word;
ManufacturerString : String;
ProductString : String;
SerialNumberString : String;
end;
function GetVolumeNameForVolumeMountPointW(const lpszVolumeMountPoint: LPCWSTR;
lpszVolumeName: LPWSTR; cchBufferLength: DWORD): BOOL; stdcall;
external kernel32;
function HidD_GetAttributes(HidDeviceObject: THandle;
var HidAttrs: THIDDAttributes): LongBool; stdcall;external 'hid.dll' name 'HidD_GetAttributes';
function HidD_GetManufacturerString(HidDeviceObject: THandle;
Buffer: PWideChar; BufferLength: Integer): LongBool; stdcall;external 'hid.dll' name 'HidD_GetManufacturerString';
function HidD_GetProductString(HidDeviceObject: THandle;
Buffer: PWideChar; BufferLength: Integer): LongBool; stdcall;external 'hid.dll' name 'HidD_GetProductString';
function HidD_GetSerialNumberString(HidDeviceObject: THandle;
Buffer: PWideChar; BufferLength: Integer): LongBool; stdcall;external 'hid.dll' name 'HidD_GetSerialNumberString';
function GetVolumeName(Name: string): string;
var
Volume: array [0..MAX_PATH] of Char;
begin
FillChar(Volume[0], SizeOf(Volume), 0);
GetVolumeNameForVolumeMountPointW(PChar(Name), @Volume[0], SizeOf(Volume));
Result := Volume;
end;
Function GetHidDeviceInfo( Symlink : PChar) : THIDUSBDeviceInfo;
Var
pstr : pWideChar;
DevHandle : THandle;
HidAttrs : THIDDAttributes;
Begin
FillChar(Result, SizeOf( Result), 0);
Result.SymLink := SymLink+ #0;
GetMem( pstr, 512);
DevHandle := CreateFile( Symlink,
GENERIC_READ or GENERIC_WRITE,
FILE_SHARE_READ or FILE_SHARE_WRITE,
nil,
OPEN_EXISTING,
0,
0);
If DevHandle <> INVALID_HANDLE_VALUE then
begin
If HidD_GetAttributes( DevHandle,HidAttrs) then
begin
result.VID := HidAttrs.VendorID;
result.PID := HidAttrs.ProductID;
result.VersionNumber := HidAttrs.VersionNumber;
end;
If HidD_GetManufacturerString( DevHandle, pstr, 512) then
Result.ManufacturerString := pStr;
If HidD_GetProductString( DevHandle, pstr, 512) then
Result.ProductString := pStr;
If HidD_GetSerialNumberString( DevHandle, pstr, 512) then
Result.SerialNumberString := pStr;
closeHandle( DevHandle);
end;
FreeMem( pStr);
End;
procedure Main;
var
VolumeName: string;
info: THIDUSBDeviceInfo;
begin
VolumeName:=GetVolumeName('i:\'); //assuming that I: is a USB drive
info:=GetHidDeviceInfo(pchar(VolumeName));
Writeln(info.SerialNumberString);
end;
begin
Main;
Readln;
end.