HTMLViewer file drop

[Michel_Bujardet]

@81001:@shao sean

I use that code in my HTMLViewer sub-class and know that it does work on all three platforms, but I only use the WebKit renderer as using Native on Windows gives different results in my program… There is one thing though that I forgot when I did that sample code, there is one time where the code does not work and you will need to trap the CancelLoad event… (basically it happens when someone drops a file on the viewer that is not part of the DOM area)…

But that would not explain the total absence of UI, would it ?