How can I prevent the user from being able to resize an image in designMode? (disable the handles when image is clicked)
Well, you cannot remove those resize handlers neither in Firefox nor IE... at least I couldn't find a solution.
At the end I managed that in Firefox by editing some configuration files from FF installation folder and we don't want to do that, right?
Anyway, if you want to disable resizing if images (but resize handlers will still be visible) just add some css style like:
img {
width: auto !important;
height: auto !important;
}
regards, Mihailo