5.4.0 ("-e") flags= QFlags(0x1|0x800|0x8000000|-0x80000000) lt margins= QMargins(0, 0, 0, 0) bt winId= 8062184 5.4.0 ("-e") "windows" QWidget::event UpdateRequest: calling d->syncBackingStore() QWidgetPrivate::syncBackingStore Widget(0x1be354fae0, name = "TopWidget") QWidgetBackingStore::sync Widget(0x1be354fae0, name = "TopWidget") discardSyncRequest Widget(0x1be354fae0, name = "TopWidget") mapped= false vis= true QWidgetBackingStore::sync DISCARDED QWidgetPrivate::syncBackingStore Widget(0x1be354fae0, name = "TopWidget") QWidgetBackingStore::sync Widget(0x1be354fae0, name = "TopWidget") discardSyncRequest Widget(0x1be354fae0, name = "TopWidget") mapped= false vis= true QWidgetBackingStore::sync DISCARDED QWidgetPrivate::syncBackingStore QPushButton(0x1be37a0ff0, name = "button") QWidgetBackingStore::sync Widget(0x1be354fae0, name = "TopWidget") discardSyncRequest Widget(0x1be354fae0, name = "TopWidget") mapped= false vis= true QWidgetBackingStore::sync DISCARDED QWidgetPrivate::syncBackingStore Widget(0x1be354fae0, name = "TopWidget") QWidgetBackingStore::sync Widget(0x1be354fae0, name = "TopWidget") discardSyncRequest Widget(0x1be354fae0, name = "TopWidget") mapped= false vis= true QWidgetBackingStore::sync DISCARDED QWidgetWindow::handleExposeEvent QPushButton(0x1be37a0ff0, name = "button") QExposeEvent(QRegion(size=1), bounds = QRect(0,0 200x23) - 0QRect(0,0 200x23) ) isExp true QWidget::event UpdateRequest: calling d->syncBackingStore() QWidgetPrivate::syncBackingStore Widget(0x1be354fae0, name = "TopWidget") QWidgetBackingStore::sync Widget(0x1be354fae0, name = "TopWidget") discardSyncRequest Widget(0x1be354fae0, name = "TopWidget") mapped= false vis= true QWidgetBackingStore::sync DISCARDED QWidget::event UpdateRequest: calling d->syncBackingStore() QWidgetPrivate::syncBackingStore Widget(0x1be354fae0, name = "TopWidget") QWidgetBackingStore::sync Widget(0x1be354fae0, name = "TopWidget") discardSyncRequest Widget(0x1be354fae0, name = "TopWidget") mapped= false vis= true QWidgetBackingStore::sync DISCARDED QWidget::event UpdateRequest: calling d->syncBackingStore() QWidgetPrivate::syncBackingStore Widget(0x1be354fae0, name = "TopWidget") QWidgetBackingStore::sync Widget(0x1be354fae0, name = "TopWidget") discardSyncRequest Widget(0x1be354fae0, name = "TopWidget") mapped= false vis= true QWidgetBackingStore::sync DISCARDED QWidgetWindow::handleExposeEvent Widget(0x1be354fae0, name = "TopWidget") QExposeEvent(QRegion(size=0), bounds = QRect(0,0 0x0) ) isExp false QWidgetWindow::handleExposeEvent Widget(0x1be354fae0, name = "TopWidget") QExposeEvent(QRegion(size=0), bounds = QRect(0,0 0x0) ) isExp false QWidget::event UpdateRequest: calling d->syncBackingStore() QWidgetPrivate::syncBackingStore Widget(0x1be354fae0, name = "TopWidget") QWidgetBackingStore::sync Widget(0x1be354fae0, name = "TopWidget") discardSyncRequest Widget(0x1be354fae0, name = "TopWidget") mapped= false vis= false QWidgetBackingStore::sync DISCARDED