Привет, oddy, в моем случае это выглядело так:
HidD_GetHidGuid(&HidGuid);
:!: Тут я получаю GUID
/*
API function: SetupDiGetClassDevs
Returns: a handle to a device information set for all installed devices.
Requires: the GUID returned by GetHidGuid.
*/
:!: Тут получаю Info, кстати заметил разницу между своим кодом и твоим может быть дельфи плохо типы блюдут, да и ты не указал тип своего GUID'а. в первом случае у тебя употребляется просто GUID
hardwareDeviceInfo:= SetupDiGetClassDevs (
:!: GUID,
nil,
0,
(DIGCF_PRESENT or DIGCF_DEVICEINTERFACE));
а во втором он с крышечкой
if SetupDiEnumDeviceInterfaces(hardwareDeviceInfo,nil,GUID^,0,deviceInfoData^)
помоему апишные функции требуют указатель (у меня &HidGuid)
:!: конец первого комментария
hDevInfo=SetupDiGetClassDevs
(&HidGuid, NULL, NULL, DIGCF_PRESENT|DIGCF_INTERFACEDEVICE);
devInfoData.cbSize = sizeof(devInfoData);
//Step through the available devices looking for the one we want.
//Quit on detecting the desired device or checking all available devices without success.
MemberIndex = 0;
LastDevice = FALSE;
do
{
MyDeviceDetected=FALSE;
/*
API function: SetupDiEnumDeviceInterfaces
On return, MyDeviceInterfaceData contains the handle to a
SP_DEVICE_INTERFACE_DATA structure for a detected device.
Requires:
The DeviceInfoSet returned in SetupDiGetClassDevs.
The HidGuid returned in GetHidGuid.
An index to specify a device.
*/
:
Result=SetupDiEnumDeviceInterfaces (hDevInfo, 0, &HidGuid, MemberIndex, &devInfoData);
if (Result != 0)
{
//A device has been detected, so get more information about it.
/*
API function: SetupDiGetDeviceInterfaceDetail
Returns: an SP_DEVICE_INTERFACE_DETAIL_DATA structure
containing information about a device.
To retrieve the information, call this function twice.
The first time returns the size of the structure in Length.
The second time returns a pointer to the data in DeviceInfoSet.
Requires:
A DeviceInfoSet returned by SetupDiGetClassDevs
The SP_DEVICE_INTERFACE_DATA structure returned by SetupDiEnumDeviceInterfaces.
The final parameter is an optional pointer to an SP_DEV_INFO_DATA structure.
This application doesn't retrieve or use the structure.
If retrieving the structure, set
MyDeviceInfoData.cbSize = length of MyDeviceInfoData.
and pass the structure's address.
*/
//Get the Length value.
//The call will return with a "buffer too small" error which can be ignored.
Result = SetupDiGetDeviceInterfaceDetail
(hDevInfo, &devInfoData, NULL, 0, &Length, NULL);
//Allocate memory for the hDevInfo structure, using the returned Length.
detailData = (PSP_DEVICE_INTERFACE_DETAIL_DATA)malloc(Length);
//Set cbSize in the detailData structure.
detailData -> cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);
//Call the function again, this time passing it the returned buffer size.
Result = SetupDiGetDeviceInterfaceDetail
(hDevInfo, &devInfoData, detailData, Length, &Required, NULL);
//Open a handle to the device.
/*
API function: CreateFile
Returns: a handle that enables reading and writing to the device.
Requires:
The DevicePath in the detailData structure
returned by SetupDiGetDeviceInterfaceDetail.
*/
DeviceHandle=CreateFile
(detailData->DevicePath,
GENERIC_READ|GENERIC_WRITE,
FILE_SHARE_READ|FILE_SHARE_WRITE,
NULL,
OPEN_EXISTING,
0,
NULL);
:!: Надеюсь английские комментарии и С не очень смущают и дадут какой то полезный результат
