hluk/CopyQ

screenshot bug

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#3598 opened on May 13, 2026

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Windowsbughelp wanted

Description

After testing, CopyQ will block the auto-save image feature of the built-in screenshot tool in Win11. The save-to-clipboard function works properly. When taking small-scale screenshots, the save image function works normally, but it fails when taking large-scale screenshots. copyq 15.00 win11 25h2

Contributor guide

Tech stack
cpp
Domain
desktop
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Windows clipboard APIC++ debuggingfamiliarity with CopyQ source
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
25
Research direction
Investigate the interaction between CopyQ and the Windows screenshot tool. Focus on clipboard monitoring and handling of large clipboard data. Examine source files related to clipboard capture and image saving (e.g., clipboardmonitor.cpp, imageimpl.cpp). Check for size limits or blocking mechanisms that may interfere with auto save. Replicate the bug with large scale screenshots to identify the failure point.