Windows API - Win32
A core set of Windows application programming interfaces (APIs) for desktop and server applications. Previously known as Win32 API.
2,411 questions
Can't copy files via clipboard in win 10 service app
![](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(300.8, 23%, 39%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EIM%3C/text%3E%3C/svg%3E)
Ilya Mentsiuk
1
Reputation point
There is process that run under service and has SYSTEM authority. This process creates window and calls AddClipboardFormatListener to get clipboard notification. TEXT data can be red from clipboard. But when try to copy file (press Ctral+C) CountClipboardFormats() returns 0.
{count} votes
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Strive Sun-MSFT 426 Reputation points2021-03-12T05:34:13.883+00:00 Hello, @Ilya Mentsiuk
But when try to copy file (press Ctral+C) CountClipboardFormats() returns 0.
Remarks: If the function fails, the return value is zero. To get extended error information, call GetLastError.
Please check the returned error code, it will tell you the reason.
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