Update:
Apparently the pyqtgraph context menu only gets blocked on a Mac. When I
run the working example using `Qt.ApplicationModal` on my Ubuntu OS, I can
access the context menu. Still trying to figure out how to fix this issue
on a Mac...
Efrem Braun
On Monday, February 8, 2021 at 11:56:14 PM UTC-5 Efrem Braun wrote:
> I have an application which has a pyqtgraph instance in a dialog box. I
> want this dialog box to be modal (I don't want the user to be able to
> interact with the main window while the dialog box is open), so normally I
> would set `setWindowModality()` to `Qt.ApplicationModal`. However, this
> blocks the pyqtgraph's context menu from being accessible (I can right
> click on the pyqtgraph instance, and it shows me the context menu, but I'm
> not allowed to click on it).
>
> I tried instead to set `setWindowModality()` to `Qt.WindowModal`. However,
> this locks the dialog box to the main window, which I don't like (I want
> the user to be able to see the main window while interacting with the
> dialog box).
>
> Is there anyway to either:
> 1. Use `setWindowModality(Qt.ApplicationModal)` but not block the
> pyqtgraph context menu?
> or
> 2. Use `setWindowModality(Qt.WindowModal)` but be able to undock the
> dialog box?
>
> A minimal working example showing the behavior is below. You can see the 3
> behaviors that result when setting the window modality to
> Qt.ApplicationModal, Qt.WindowModal, and Qt.NonModal.
>
> ```
> from PySide2.QtWidgets import *
> from PySide2.QtGui import *
> from PySide2.QtCore import *
>
> import pyqtgraph as pg
>
> class MainWindow(QMainWindow):
> def __init__(self, *args, **kwargs):
> super(MainWindow, self).__init__(*args, **kwargs)
> b = QPushButton()
> b.setText("Open dialog")
> self.setCentralWidget(b)
> b.clicked.connect(self.showdialog)
>
> def showdialog(self):
> self.d = CustomDialog(self)
>
> # # not modal
> # self.d.setWindowModality(Qt.NonModal)
> # self.d.show()
>
> # location can't be moved
> self.d.setWindowModality(Qt.WindowModal)
> self.d.exec_()
>
> # # blocks context menu
> # self.d.setWindowModality(Qt.ApplicationModal)
> # self.d.exec_()
>
>
> class CustomDialog(QDialog):
> def __init__(self, *args, **kwargs):
> super(CustomDialog, self).__init__(*args, **kwargs)
>
> buttons = QDialogButtonBox.Cancel
> self.buttonBox = QDialogButtonBox(buttons)
> self.buttonBox.rejected.connect(self.reject)
> self.layout = QVBoxLayout()
> self.layout.addWidget(pg.PlotWidget(self))
> self.layout.addWidget(self.buttonBox)
> self.setLayout(self.layout)
>
>
> if __name__ == '__main__':
> app = QApplication(sys.argv)
> window = MainWindow()
> window.show()
> sys.exit(app.exec_())
> ```
>
> Thank you.
>
> Efrem Braun
>
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