Maybe this link can help:_ttps://docs.microsoft.com/en-us/windows/win32/dwm/thumbnail-ovwRegards
« Reply #341 on: October 10, 2019, 12:04:32 AM »ReplyQuoteModifysloreChef***Date Registered: Jun 2016Posts: 452Hi, lenugThanks for the sample code information, I used that code made a tech demo, yes, it works.But for preview feature it needs more code to deal with:* mouse hittest, mouse move event to update the preview window.* preview window size with different screen resolutions.I'm quit busy and no time to add the enhance feature in schedule.It is on my TODO list, when I done I will reply you.