macos: [CATransaction synchronize] called within transaction

maccan

Hi,

I'm running macos Ventura 13.1 and my QT application reports the following warning/error: "[CATransaction synchronize] called within transaction".
It occurs during statements like this:
QString fileName = QFileDialog::getOpenFileName(this, "Load...", ".", "*.yaml");

Apart from the warning/error, the code runs normally.
My QT Version is 6.4.1

Regards

Any help would be great

SGaist

Hi and welcome to devnet,

Can you provide a minimal compilable example that shows this behaviour ?

maccan

@SGaist

Just compile the code attached below and start it from the shell.
I get:
2023-01-02 09:41:07.471 test[97391:2850756] +[CATransaction synchronize] called within transaction

#include <QApplication>
#include <QFileDialog>

int main(int argc, char argv[]) {
QApplication a(argc, argv);
QFileDialog f;
QString fileName =
f.getOpenFileName(0, "Select file...", ".", ".txt");
return a.exec();
}

SGaist

Can you check with 6.4.2 ?

jiayouzl

@SGaist My system macos13.1, I also encountered this problem with Python 3.9.16, this problem is not available in macos12, it appeared after upgrading to macos13. my pyside version 6.4.2

jiayouzl

@SGaist

my code

资源文件选择按钮

def selectResourceFile(self):
    # 资源文件路径
    resourceFile = QFileDialog.getOpenFileName(self, caption='选择资源文件', dir=os.getcwd(), filter='All Files (*)')
    if resourceFile[0] not in ['', None]:
        # 插入表格内容
        self.ui.tableWidget.insertRow(0)  # 插入到第一行
        self.setTable(0, 0, resourceFile[0])
        self.setTable(0, 1, '.')

maccan

@SGaist
Same result in 6.4.2!

SGaist

Based on this thread of the Apple developer forum, it looks like an Apple issue.

Riccardo M. Bianchi

@maccan , @SGaist , all,

In my case, I could fix the problem by using the QFileDialog::DontUseNativeDialog option.

When using that option, the Apple native file dialog window is not used anymore, which seems to fix the problem in my application (on macOS Ventura and M1 Pro chip).

I hope that helps.

Best,
-- Riccardo.

Cael

@Riccardo-M-Bianchi

I am running into this same issue (Mac OS, Ventura, M1 chip, etc), but I am using QML and following the basic QT manual page for opening a QML folder dialogue: https://doc.qt.io/qt-6/qml-qt-labs-platform-folderdialog.html#:~:text=To show a folder dialog,made by accepting the dialog.

Does anyone know if there is a way to set the QFileDialog::Don'tUseNative option from within QML?

ShineGalaxy

    QStringList fileNames = QFileDialog::getOpenFileNames(
        this, tr("Import File(Import tif files first)"), filePath,
        "file (*.tiff *.tif *.png *.bmp)",0,QFileDialog::DontUseNativeDialog);

QFileDialog::DontUseNativeDialog

add up option，program could work，but way？

SGaist

@ShineGalaxy because then the native dialog is not used and thus does not trigger the message.

ShineGalaxy

@SGaist add tifflib-4.5.1，then problem occurred. why?

macos: [CATransaction synchronize] called within transaction

int main(int argc, char argv[]) { QApplication a(argc, argv); QFileDialog f; QString fileName = f.getOpenFileName(0, "Select file...", ".", ".txt"); return a.exec(); }

资源文件选择按钮

int main(int argc, char argv[]) {
QApplication a(argc, argv);
QFileDialog f;
QString fileName =
f.getOpenFileName(0, "Select file...", ".", ".txt");
return a.exec();
}