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Fix button state validation in windows platform during drag and drop

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The button state from windows when we use GetAsynckeyState() provides
both MK_LBUTTON and MK_RIGHTBUTTON at the same time. This creates an
issue when we validate only with single state to determine
DRAGDROP_S_DROP operation.

Normally, The MK_RBUTTON will be delivered when we have long press
during drag. But sometimes (no definitive reason identified) the key
state from windows contains both the key state (MK_LBUTTON | Mk_RBUTTON)
during drag and drop operation with touch.

This patch set fixes the issue by validating all key state instead of
a particular state.

Fixes: QTBUG-112995
Change-Id: I67bf5f4956b68279ecc5fbeca8e8e7aef46d0482
Reviewed-by: Timothée Keller <timothee.keller@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Wladimir Leuschner <wladimir.leuschner@qt.io>
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
(cherry picked from commit 3902fb0438d946a466b67f2b82ba8779c731e55d)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
This commit is contained in:
Santhosh Kumar 2023-06-09 13:17:01 +02:00 committed by Qt Cherry-pick Bot
parent 8bd70959f8
commit 865bfc531c
1 changed files with 1 additions and 1 deletions
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2
src/plugins/platforms/windows/qwindowsdrag.cpp
View File

@ -348,7 +348,7 @@ QWindowsOleDropSource::QueryContinueDrag(BOOL fEscapePressed, DWORD grfKeyState)
} else {
if (buttons && !m_currentButtons) {
m_currentButtons = buttons;
} else if (!(m_currentButtons & buttons)) { // Button changed: Complete Drop operation.
} else if (m_currentButtons != buttons) { // Button changed: Complete Drop operation.
result = DRAGDROP_S_DROP;
}
}