Hi Hai,
We modified the control to use the UseExDialog and the change will appear in the next SP of the control (early next week). We could not replicate the problem or Win7 though it was definately there a couple of months ago so most likely Windows automatic update has fixed this...
Best Regards,Nevron Support Team
Thank you for the tip.You're correct that the PrintDialog does not work correctly under 64 bit - which is in general a MS bug. Notice that more recent updates of Windows 7 seem to have fixed this problem. What is the OS you're working with?