[英]QFileDialog always opens behind main window
I'm trying to open a file in my PySide2 application, but the file dialog always opens below the main window and appears as another application in the launcher.我试图在我的 PySide2 应用程序中打开一个文件,但文件对话框总是在主窗口下方打开,并在启动器中显示为另一个应用程序。 The application's name is "Portal".应用程序的名称是“门户”。
I see other answers where the solution is to pass the main window as the first parameter to getOpenFileName()
, but that doesn't work for me.我看到其他答案,其中解决方案是将主窗口作为第一个参数传递给getOpenFileName()
,但这对我不起作用。
Here's a simple demonstration of the problem:这是问题的简单演示:
import sys
from PySide2.QtWidgets import QPushButton, QFileDialog, QApplication
class DemoButton(QPushButton):
def __init__(self, text):
super().__init__(text)
self.clicked.connect(self.on_click)
def on_click(self):
file_name, _ = QFileDialog.getOpenFileName(
self,
"Open a text file.",
filter='Text file (*.txt)')
print(file_name)
def main():
app = QApplication(sys.argv)
button = DemoButton("Hello World")
button.show()
app.exec_()
sys.exit()
main()
I thought maybe the parent had to be a QMainWindow
, so I tried that:我想也许父母必须是QMainWindow
,所以我试过:
import sys
from PySide2 import QtWidgets
class MainWindow(QtWidgets.QMainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
main_widget = QtWidgets.QWidget(self)
self.setCentralWidget(main_widget)
# layout initialize
g_layout = QtWidgets.QVBoxLayout()
layout = QtWidgets.QFormLayout()
main_widget.setLayout(g_layout)
# Add Widgets
self.exec_btn = QtWidgets.QPushButton('Execute')
self.exec_btn.clicked.connect(self.find_file)
# global layout setting
g_layout.addLayout(layout)
g_layout.addWidget(self.exec_btn)
def find_file(self):
file_name, _ = QtWidgets.QFileDialog.getOpenFileName(
self,
"Open a text file.",
filter='Text file (*.txt)')
print(file_name)
def main():
app = QtWidgets.QApplication(sys.argv)
window = MainWindow()
window.show()
app.exec_()
sys.exit()
main()
The file dialog behaved exactly the same.文件对话框的行为完全相同。
I'm using PySide2 5.12.2, Python 3.6.7, and running on Ubuntu 18.04.我正在使用 PySide2 5.12.2、Python 3.6.7,并在 Ubuntu 18.04 上运行。
Thanks to ekhumoro's comment, I learned that I can tell PySide2 not to use the native file dialog.感谢 ekhumoro 的评论,我了解到我可以告诉 PySide2 不要使用本机文件对话框。
import sys
from PySide2.QtWidgets import QPushButton, QFileDialog, QApplication
class DemoButton(QPushButton):
def __init__(self, text):
super().__init__(text)
self.clicked.connect(self.on_click)
def on_click(self):
file_name, _ = QFileDialog.getOpenFileName(
self,
"Open a text file.",
filter='Text file (*.txt)',
options=QFileDialog.DontUseNativeDialog)
print(file_name)
def main():
app = QApplication(sys.argv)
button = DemoButton("Hello World")
button.show()
app.exec_()
sys.exit()
main()
That fixes the behaviour by bringing the file dialog to the front, but I think the native file dialog looks better.通过将文件对话框置于最前面来修复该行为,但我认为本机文件对话框看起来更好。 Hopefully, there's another option that can make the native file dialog work properly.希望还有另一个选项可以使本机文件对话框正常工作。
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