does anyone know if it's possible to change the line thickness of a roi? I would like to increase the line thickness to make the roi more visible in a scaled down image (e.g. in my html report).
its not possible at the moment to choose different ROI width. But you are able to read out the ROI parameters and use the "IMAQ Draw" function. Because its possible to set the width in the IMAQ Draw.
I still don't understand your IMAQ Draw function. To me it doesn't look as if you could feed an extra parameter to the coordinates array (at last in my application). I've gone a different way now of moving the existing ROI of an image up one pixel, down, left and right and then combining all ROIs.