What is the correct use of the 'DwmSetIconicThumbnail' function?
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(131.20000000000002, 10%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
曾子墨
0
Reputation points
I use the 'DwmSetIconicThumbnail' function to set a custom image for the taskbar icon preview layer. My question is why when the mouse is first placed on the icon for preview, the state displayed is the same as in the first chapter image, and the width of the pop-up layer does not adapt to the image width. However, when the mouse is moved over for preview the second time, it returns to normal
This is abnormal: This is normal:
Windows development | Windows API - Win32
-
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
Anonymous2025-11-06T08:00:52.4433333+00:00 Hi there, sorry for late response. Have you solved your issue yet? If you still have any question, please let us know! Thanks
Sign in to comment
Sign in to answer