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fix: correct scroll button enabled state after lazy layoutTabs in DTabBar #769

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fix: correct scroll button enabled state after lazy layoutTabs in DTabBar #769

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4 changes: 4 additions & 0 deletions src/widgets/dtabbar.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1589,6 +1589,10 @@ void DTabBarPrivate::tabLayoutChange()
q->tabLayoutChange();
// 更新关闭按钮的显示
updateCloseButtonVisible();
// 修正滚动按钮的启用状态：layoutTabs() 会将 leftB 重置为 disabled，
// 需根据实际 scrollOffset 重新计算，修复惰性布局路径（如 paintEvent
// 中经 tabRect() 触发的 layoutTabs）下左右滚动按钮 enabled 状态反转的问题。
makeVisible(currentIndex());
}

void DTabBarPrivate::initStyleOption(QStyleOptionTab *option, int tabIndex) const
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