C + + for the connected usb device information

CodePudding user response:

Is there any API can be used

CodePudding user response:

SetupDiEnumDeviceInterfaces apis, such as

CodePudding user response:

Can read the registry, the Hardware \ \ DeviceMap \ \ SerialComm, can refer to my code

 void CComDlg: : FindComPort () 
{
Hkeys hkeys; 

If (RegOpenKeyEx (HKEY_LOCAL_MACHINE, _T (" Hardware \ \ DeviceMap \ \ SerialComm "), NULL, KEY_READ, & amp; Hkeys)==ERROR_SUCCESS) 
{
SzComName TCHAR szPortName [256], [256]. 
DWORD dwLong dwSize; 
Int nCount=0; 
M_pCombox=(CComboBox *) GetDlgItem (IDC_COMBO_COM); 

M_pCombox - & gt; ResetContent (); 
While (true) 
{
DwLong=dwSize=256; 
If (RegEnumValue (hkeys, nCount szPortName, & amp; DwLong, NULL, NULL, PUCHAR szComName, & amp; DwSize)==ERROR_NO_MORE_ITEMS) 
break; 

M_pCombox - & gt; InsertString (nCount, szComName); 
NCount++; 
} 
RegCloseKey (hkeys); 
M_pCombox - & gt; SetCurSel (0); 
} 
} 

I insert all current information into the usb port into the combox

CodePudding user response:

 
//according to equipment installation class GUID create empty equipment information collection 
HDEVINFO DeviceInfoSet=SetupDiCreateDeviceInfoList (SetupClassGuid, NULL); 
//according to the installation of equipment class GUID equipment information collection 
HDEVINFO HDEVINFO; 
If (InterfaceClassGuid==NULL) 
{
HDevInfo=SetupDiGetClassDevsEx (NULL, NULL, NULL, DIGCF_ALLCLASSES | DIGCF_DEVICEINTERFACE | DIGCF_PRESENT, DeviceInfoSet, NULL, NULL); 
} 
The else 
{
HDevInfo=SetupDiGetClassDevsEx (InterfaceClassGuid (PCSTR) & amp;" USB ", NULL, DIGCF_DEVICEINTERFACE | DIGCF_PRESENT, DeviceInfoSet, NULL, NULL); 
} 
//equipment information data 
DWORD DeviceIndex=0; 
Bool k=true; 
While (SetupDiEnumDeviceInfo (hDevInfo DeviceIndex++, & amp; DeviceInfoData)) 
{
//access device instance ID 
If (SetupDiGetDeviceInstanceId (hDevInfo, & amp; DeviceInfoData DeviceInstanceId, DeviceInstanceIdSize, NULL) & amp; & K) 
{
SetupDiGetDeviceRegistryProperty (hDevInfo, & amp; DeviceInfoData, 
SPDRP_HARDWAREID, 
0, (PBYTE) fname, 
Sizeof (fname), 
NULL); 
} 
} 

CodePudding user response:

In the WDK USBView source code, can refer to

CodePudding user response: