Details
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Bug
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Resolution: Invalid
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P2: Important
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None
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6.6.1, 6.7.0 Beta2, 6.8
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None
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Windows
Description
QQuickWidget's internal QQuickWindow object never emits QQuickWindow::frameSwapped() signal.
Here's a code to compare:
#include <QtQuickWidgets> int main(int argc, char **argv) { QApplication app{argc, argv}; QQuickWidget w; w.setSource(QUrl{"qrc:/App/Main.qml"}); w.resize(512, 512); w.show(); QQuickView v; v.setSource(QUrl{"qrc:/App/Main.qml"}); v.resize(512, 512); v.show(); QObject::connect(w.quickWindow(), &QQuickWindow::frameSwapped, [] { qDebug() << "frameSwapped() from QQuickWidget::quickWindow()"; }); QObject::connect(&v, &QQuickWindow::frameSwapped, [] { qDebug() << "frameSwapped() from QQuickView"; }); return app.exec(); }
Main.qml is just BusyIndicator for continuous updating:
import QtQuick.Controls.Material
BusyIndicator {}
Result:
18:41:59: Starting D:\downloads\build-untitled19-Desktop_Qt_6_6_1_MSVC2019_64bit-Debug\appuntitled19.exe... QML debugging is enabled. Only use this in a safe environment. frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView frameSwapped() from QQuickView 18:42:01: The process was ended forcefully.