calling RegisterDeviceNotification function

[mam1nej]

Hello Everyone, 

I need some help to figure out how to call this function from Labview. 

Details about the prototype are found here

I know how to use the call library function but I can't figure out how to wire one of the parameters that happens to be a struct _DEV_BROADCAST_DEVICEINTERFACE( here)

In C++, what I am trying to do translates into this code :

DEV_BROADCAST_DEVICEINTERFACE NotificationFilter;
       
    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;


    RegisterDeviceNotification(hWnd, &NotificationFilter,
        DEVICE_NOTIFY_WINDOW_HANDLE);  

I know how to get the hanlde to the Vi window and pass it as argument to the function. but I can't find a way to create the struct that I have to pass as second argument. 

Any help will be greatly appreciated. 

Thanks

AJ

[mam1nej]

I went through many posts of this forum that were related to my questions and tried putting something together to properly call this function.

I tried wiring a cluster that matches the Struct datatype required by the function. My efforts were not successful as the function appears to be reporting NULL. ( according to MSDN, 

If the function fails, the return value is NULL. To get extended error information, call GetLastError.)

I get this error when I call the kernel32.dll

GetLastError(void);

ERROR_INVALID_DATA

13 (0xD)

The data is invalid.

My code is attached. any help or guidance is really appreciated. 

thanks

AJ

[mam1nej]

I just realized that some may need a prior version lf labview. I attached v 8.6 here

[francine.p]

Hi mam1nej,

Are you able to successfully run the C++ code you wrote and call the kernel32.dll in C++? Also, are you able to run your code using an example code? There is a code called External Code (DLL) Execution.vi that is located under Help >> Find Examples... on your LabVIEW splash screen, and you can find it by searching for the keyword "DLL". 

Also, here's some information on using cluster data types in LabVIEW: http://www.ni.com/getting-started/labview-basics/data-structures#Clusters

Let me know what your results are and if this is helpful!