I solved the issue.
The behavior of the NI-VISA driver requires that you register to receive Windows notifications. The other USB devices that weren't controlled by a NI-VISA driver didn't require me to register to receive the DBT_DEVICEARRIVAL and DBT_DEVICEREMOVECOMPLETE events. I received them by default...
Here is the code to register USB events
Here is the code where I register the USB events:
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DEV_BROADCAST_DEVICEINTERFACE NotificationFilter;
intptr_t postHandle = 0;
/* Windows HWND */
HWND hWnd = 0;
long long unsigned int hWndVal = 0;
/* Get HWND of LabWindows\CVI panel */
GetPanelAttribute(panelHandle,ATTR_SYSTEM_WINDOW_HANDLE,&hWndVal);
hWnd = (HWND)hWndVal;
/*
* USB Raw Device
*
* Device Interface Class GUID = {a5dcbf10-6530-11d2-901f-00c04fb951ed}
*
*/
GUID_CLASS_USB_DEVICE.Data1 = 0xA5DCBF10L;
GUID_CLASS_USB_DEVICE.Data2 = 0x6530;
GUID_CLASS_USB_DEVICE.Data3 = 0x11D2;
GUID_CLASS_USB_DEVICE.Data4[0] = 0x90;
GUID_CLASS_USB_DEVICE.Data4[1] = 0x1F;
GUID_CLASS_USB_DEVICE.Data4[2] = 0x00;
GUID_CLASS_USB_DEVICE.Data4[3] = 0xC0;
GUID_CLASS_USB_DEVICE.Data4[4] = 0x4F;
GUID_CLASS_USB_DEVICE.Data4[5] = 0xB9;
GUID_CLASS_USB_DEVICE.Data4[6] = 0x51;
GUID_CLASS_USB_DEVICE.Data4[7] = 0xED;
NotificationFilter.dbcc_size = sizeof(DEV_BROADCAST_DEVICEINTERFACE);
NotificationFilter.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;
NotificationFilter.dbcc_classguid = GUID_CLASS_USB_DEVICE;
/*
* Installs a callback function for WM_DEVICECHANGE Windows message posted
* or sent to a LabWindows/CVI panel.
*/
InstallWinMsgCallback (panelHandle, WM_DEVICECHANGE,
WindowsDeviceDetection, VAL_MODE_INTERCEPT, NULL, &postHandle);
/*
* Register device notification for USB Raw Device interface class GUID
*/
RegisterDeviceNotification(hWnd, &NotificationFilter,
DEVICE_NOTIFY_WINDOW_HANDLE);
Here is the code that responds:
static int CVICALLBACK WindowsDeviceDetection (int panelHandle, int message,
unsigned int* wParam, unsigned int* lParam, void* callbackData)
{
PDEV_BROADCAST_HDR lpdb = (PDEV_BROADCAST_HDR)lParam;
switch (message)
{
/* Received Windows WM_DEVICECHANGE message */
case WM_DEVICECHANGE:
{
switch (*wParam)
{
/*
* Received Windows device-change event "DBT_DEVNODES_CHANGED".
*
* Device has been added or removed from the system.
*/
case DBT_DEVNODES_CHANGED:
printf("[%s] DBT_DEVNODES_CHANGED\n",TimeStr());
break;
/*
* Received Windows device-change event "DBT_DEVICEARRIVAL".
*
*
*/
case DBT_DEVICEARRIVAL:
printf("[%s] DBT_DEVICEARRIVAL\n",TimeStr());
break;
/*
* Received Windows device-change event "DBT_DEVICEREMOVECOMPLETE".
*
*
*/
case DBT_DEVICEREMOVECOMPLETE:
printf("[%s] DBT_DEVICEREMOVECOMPLETE\n",TimeStr());
break;
default:
break;
}
}
}
return 0;
}
