Detecting a mouse press or click on QLineEdit set to Nofocus or .setReadOnly

[d_stranz]

I am not a Qt Python expert, but I think you need something like this:

def eventFilter(self, source, event):
        if event.type() == QtCore.QEvent.MouseButtonPress and source.isReadOnly:
            QTimer.singleShot(5000, self.remove_tooltip)
            QtWidgets.QTooltiip.showText( source.pos(), 'Cannot enter data here')
         return super(UIMainWindow, self).eventFilter(source, event)
 
def remove_tooltip(self):
        QtWidgets.QTooltiip.hideText()

def eventFilter(self, source, event):
        if event.type() == QtCore.QEvent.MouseButtonPress and source.isReadOnly:
            QTimer.singleShot(5000, self.remove_tooltip)
            QtWidgets.QTooltiip.showText( source.pos(), 'Cannot enter data here')
         return super(UIMainWindow, self).eventFilter(source, event)

def remove_tooltip(self):
        QtWidgets.QTooltiip.hideText()

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In the eventFilter() "source" is the QWidget instance that is the focus of the event, so it -is- "self.ui.BTFE" in this case, since that's where you have installed the filter. So in the event filter code, you can simply replace "self.ui.BTFE" with "source" and it will work for all of your line edits.

I do not know for sure if QTooltip::showText() is a blocking method (ie, it suspends the rest of the code until it is hidden again), so I switched the order of starting the timer and showing the tip just to make sure the timer is running first.

You also need to check to see if you can TAB into a read-only QLineEdit, and if so, you will probably wnat to display the tooltip for an enter event as well.

[dennisvz]

My PyCharm IDE is telling me it does not recognize QtWidgets, even though I have this import:

from PyQt5.QtWidgets import QMainWindow, QMenu, QLineEdit, QComboBox, QFileDialog, QMessageBox, QPushButton, QToolTip, QWidget

from PyQt5.QtWidgets import QMainWindow, QMenu, QLineEdit, QComboBox, QFileDialog, QMessageBox, QPushButton, QToolTip, QWidget

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I then added: (below import above):

from PyQt5 import QtWidgets

from PyQt5 import QtWidgets

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That import got rid of the 'not recognized' issue, and no errors when run. I changed the event to MouseButtonRelease so the message would show for the 5 seconds. However, 1) the tooltip shows well away from the line edit. Is the source.pos() supposed to make the tooltip show next to the line edit that was clicked?
thanks for your response

[Ginsengelf]

Hi, pos() returns the position in widget coordinates. I think globalPos() is what you need.

Ginsengelf

[dennisvz]

QtWidgets.QToolTip.showText(source.globalPos(), 'Cannot enter data here')

QtWidgets.QToolTip.showText(source.globalPos(), 'Cannot enter data here')

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gives an AttributeError: 'QLineEdit' object has no attribute 'globalPos'

[d_stranz]

gives an AttributeError: 'QLineEdit' object has no attribute 'globalPos'

So you fire up your browser, type "Qt globalpos" into the Google search box, and what do you think you get as the first hit? Certainly faster than asking questions here and waiting for someone to answer.

And since you already imported QTooltip from QtWidgets, you can probably remove the QtWidgets part of QtWidgets.QTooltip.showText and just use QTooltip.showText. I said I wasn't a Python expert. Also get rid of the separate import of all of QtWidgets. It just bogs things down at runtime.