USBVIEWDEVICEIOCONTROLIOCTL_USB_GET_NODE_INFORMATIONFALSECODE 謝謝!
void TForm1::ShowInformation(String str)
}

{
//TODO: Add your source code here
char strShow[64];
String ShowInfo;
char HCName[16];
int HCNum;
HANDLE hHCDev;
PCHAR rootHubName;
PCHAR leafName;

ULONG index;
bool success;
PUSB_NODE_CONNECTION_INFORMATION connectionInfo;
HANDLE hHubDevice;
PCHAR driverKeyName ,deviceDesc;
ULONG nBytes;
PUSB_NODE_INFORMATION HubInfo;
PCHAR deviceName = NULL;
int port;
for(HCNum = 0;HCNum < NUM_HCS_TO_CHECK;HCNum )
{
wsprintf(HCName,"\\\\.\\HCD%d",HCNum);
hHCDev = CreateFile(HCName,
GENERIC_WRITE,
找到控制器錯誤控制器控制器名稱： ShowInformation("!\r\n");
goto end;
}
wsprintf(strShow,"USB:%s",rootHubName);
ShowInfo = strShow;
ShowInformation(ShowInfo);

HubInfo = (PUSB_NODE_INFORMATION)malloc
strcpy(deviceName sizeof("\\\\.\\")-1,rootHubName);
hHubDevice = CreateFile(deviceName,
GENERIC_WRITE,
FILE_SHARE_WRITE,
ShowInformation("");
goto end;
}
success = DeviceIoControl(hHubDevice,
IOCTL_USB_GET_NODE_INFORMATION,
HubInfo,
sizeof(USB_NODE_INFORMATION),
//false,VCTRUE錯誤！結束
port = HubInfo->u.HubInformation.HubDescriptor.bNumberOfPorts;
for(index = 1;index <= port;index )
{
ULONG nBytes;
錯誤！ free(connectionInfo);
ShowInformation("");
goto end;
}
if(connectionInfo)
{
if(connectionInfo->ConnectionStatus == DeviceConnected)
{
wsprintf(strShow,"%dusb.",index);
第埠沒有設備連接結束

}//for-indexend:
//PCHAR TForm1::GetHCDDriverKeyName(HANDLE HCD)
&nBytes,
NULL);
if(!success)
{
goto GetHCDDriverKeyNameError;
}
driverKeyNameA = WideStrToMultiStr(driverKeyNameW->DriverKeyName );
free(driverKeyNameW);
return driverKeyNameA;

GetHCDDriverKeyNameError:
if (driverKeyNameW != NULL)
{
出錯}

資料處理函數
{
//TODO: Add your source code here
ULONG nBytes;
PCHAR MultiStr;
nBytes = WideCharToMultiByte(
CP_ACP,
0,
WideStr,
-1,
NULL,
0,
0,
WideStr,
-1,
MultiStr,
nBytes,
NULL,
NULL);

if (nBytes == 0)
{
free(MultiStr);
return NULL;
}

return MultiStr;
//PCHAR TForm1::GetRootHubName(HANDLE HostController)
rootHubNameA;

rootHubNameW = NULL;
rootHubNameA =NULL;

success = DeviceIoControl(HostController,
IOCTL_USB_GET_ROOT_HUB_NAME,
0,
0,
&rootHubName,
sizeof(rootHubName),
&nBytes,
NULL);
if(!success)
{
goto GetRootHubNameError;
}
nBytes = rootHubName.ActualLength;
rootHubNameW = (PUSB_ROOT_HUB_NAME)malloc(nBytes);
success = false;
success = DeviceIoControl(HostController,
IOCTL_USB_GET_ROOT_HUB_NAME,
NULL,
0,
GetRootHubNameError:
if (rootHubNameW != NULL)
{
free(rootHubNameW);
rootHubNameW = NULL;
ShowInformation("!\r\n");
}
return NULL;
}

PUSB_NODE_INFORMATION HubInfo;
不是這樣宣告,改成
PUSBDEVICEINFO info;

info = NULL;
info = (PUSBDEVICEINFO) alloca(sizeof(USBDEVICEINFO));
info->HubInfo = (PUSB_NODE_INFORMATION)alloca(sizeof(USB_NODE_INFORMATION));

然後這樣就可
// Root hub is open. Collect the node information
Success = DeviceIoControl(RootHubHandle, IOCTL_USB_GET_NODE_INFORMATION, info->HubInfo,
sizeof(USB_NODE_INFORMATION), info->HubInfo, sizeof(USB_NODE_INFORMATION), &BytesReturned, NULL);

if (!Success)
return GetLastError();

各位大大:
能否將source code寄給我參考作範例
謝謝


===================引 用 文 章===================
PUSB_NODE_INFORMATION HubInfo;
不是這樣宣告,改成
PUSBDEVICEINFO info;

info = NULL;
info = (PUSBDEVICEINFO) alloca(sizeof(USBDEVICEINFO));
info->HubInfo = (PUSB_NODE_INFORMATION)alloca(sizeof(USB_NODE_INFORMATION));

然後這樣就可
// Root hub is open. Collect the node information
Success = DeviceIoControl(RootHubHandle, IOCTL_USB_GET_NODE_INFORMATION, info->HubInfo,
sizeof(USB_NODE_INFORMATION), info->HubInfo, sizeof(USB_NODE_INFORMATION), &BytesReturned, NULL);

if (!Success)
return GetLastError();

Please see this
http://delphi.ktop.com.tw/board.php?cid=31&fid=79&tid=87849

您好
感謝回覆

===================引 用 文 章===================
Please see this
http://delphi.ktop.com.tw/board.php?cid=31&fid=79&tid=87849