Details
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Type:
Bug
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Status: Closed
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Priority:
P2: Important
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Resolution: Done
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Affects Version/s: 4.8.5, 5.2.0, 5.2.1
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Fix Version/s: 5.9
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Component/s: GUI: Complex Input methods
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Labels:None
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Environment:Tested on Mac, OSX 10.9.1, with Qt 4.8.5, 5.2.0, 5.2.1.
The other modifiers (Shift, Control, Option) work correctly.
No similar problem on Windows platform.
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Platform/s:
macOS
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Commits:25e67bcacac690be4971cfab16cd838653d0e7c6
Description
On Mac, the Command (⌘) key prevents keyRelease events on regular keys.
Follow this scenario, while listening to QWidget's keyPressEvent and keyReleaseEvent:
1. Press down the command key
2. Press down a regular key (say 'T')
3. Release the 'T' key
4. Release the command key
Expected resulting sequence:
1. keyPressEvent (command key)
2. keyPressEvent (T key)
3. keyReleaseEvent (T key)
4. keyReleaseEvent (command key)
Actual sequence:
1. keyPressEvent (command key)
2. keyPressEvent (T key)
3. keyReleaseEvent (command key)
The attached minimal application shows the problem.
This is a problem when an application needs to track the set of pressed keys (not only modifier keys).