How can I get an array size in CVI

[jacky Wang]

It should be very easy, but I still can not find correct function I could use? Below is my code and I want to get the array size of variable "firstFile"

Thanks

Jacky

int CVICALLBACK PanelCB (int panel, int event, void *callbackData,
  int eventData1, int eventData2)
{
 char** files;
 char*  firstFile;
 
 switch (event)
  {
  //This event occurs when files are dragged and dropped on the panel
  case EVENT_FILESDROPPED:
   files = (char**)eventData1;
 //  firstFile = files[0];
   
   break;
  }
 return 0;
}

[cdk52]

Hi Jacky.

How about strlen(firstFile)?

I assume that you have called EnableDragAndDrop() for a top-level panel, and you want to know how many files were dropped. You could try something like this to iterate through the file list:

int CVICALLBACK PanelCB (int panel, int event, void *callbackData, int eventData1, int eventData2)
{
 char** files = NULL, **ppc = NULL;
 char* firstFile;
 int length;
 
 switch (event)
  {
  //This event occurs when files are dragged and dropped on the panel
  case EVENT_FILESDROPPED:
   files = (char**)eventData1;
   if (files)
    {
    // Get first file pathname
    firstFile = files[0];
    // Get length of pathname
    length = strlen (firstFile);

    ppc = files;

    while (*ppc)
     {
     printf ("Selected File : %s\n", *ppc);
     free (*ppc);
     *ppc = NULL;
     ppc++;
     }

    free (files);
    files = NULL;
    }
 
   break;
 }

 return 0;
}

Note: adapted from the CVI Help for the function MultiFileSelectPopup().

Hope this helps.

Regards,
Colin.