I am looking for a sample that gives USB device path (\?\usb#vid_04a9&pid_1097#207946#{28d78fad-5a12-11d1-ae5b-0000f803a8c2}) using USB port name (USB001).
I got a sample to get the device path of all installed ports. But I want to map USB port to USB printer Device path.
Code:
static const GUID GUID_DEVINTERFACE_USBPRINT = {0x28d78fad,0x5a12,0x11D1,0xae,0x5b,0x00,0x00,0xf8,0x03,0xa8,0xc2}; HDEVINFO devs; SP_DEVINFO_DATA devinfo; SP_DEVICE_INTERFACE_DATA devinterface; GUID intfce; PSP_DEVICE_INTERFACE_DETAIL_DATA interface_detail; ULONG index; ULONG requiredLength; intfce = GUID_DEVINTERFACE_USBPRINT; devs = SetupDiGetClassDevs(&intfce, //&GUID_DEVINTERFACE_USBPRINT, NULL, NULL, DIGCF_PRESENT | DIGCF_ALLCLASSES| DIGCF_DEVICEINTERFACE); if (GetLastError() == ERROR_INVALID_PARAMETER || GetLastError() == ERROR_INVALID_FLAGS || devs == INVALID_HANDLE_VALUE) { SetupDiDestroyDeviceInfoList(devs); return; } ZeroMemory(&devinterface, sizeof(SP_DEVICE_INTERFACE_DATA)); devinterface.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA); devinterface.Flags = 0; for (index = 0; SetupDiEnumDeviceInterfaces(devs, 0, &intfce, //&GUID_DEVINTERFACE_USBPRINT, index, &devinterface); index++) { // Clear out error list GetLastError(); char* interfacename; // Allocate space interfacename = (char*) malloc(2048); // Zero out buffer ZeroMemory(interfacename, 2048); requiredLength = 0; if (!SetupDiGetDeviceInterfaceDetail(devs, &devinterface, NULL, 0, &requiredLength, NULL)) { if (GetLastError() != 122){ // If not wrong size char* buf; FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, GetLastError(), 0, (LPTSTR) &buf, 0, NULL); char* myerrmsg; myerrmsg = (char*) malloc(128); wsprintf(myerrmsg,"Error # = %d\n%s", GetLastError(), buf); //AfxMessageBox(myerrmsg, MB_OK, 0); return; } } interface_detail = (SP_DEVICE_INTERFACE_DETAIL_DATA*) malloc(requiredLength); interface_detail = (PSP_DEVICE_INTERFACE_DETAIL_DATA) calloc(1, requiredLength); if (interface_detail == NULL) { // AfxMessageBox("Memory allocation failed!",MB_OK,0); } else { ZeroMemory(interface_detail, sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA)); interface_detail->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA); devinfo.cbSize = sizeof(SP_DEVINFO_DATA); SetupDiGetDeviceInterfaceDetail(devs, &devinterface, interface_detail, requiredLength, &requiredLength, &devinfo); //interfacename = interface_detail->DevicePath; strcpy_s(interfacename, 0x800, interface_detail->DevicePath); }