gptexample.py

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QLineEdit, QLabel
from PyQt5.QtGui import QCursor, QKeyEvent
from PyQt5.QtCore import Qt, QEvent

class Example(QWidget):

    def __init__(self):
        super().__init__()
        self.initUI()

    def initUI(self):

        self.delaylabel = QLabel('Delay:', self)
        self.delaylabel.move(20, 20)

        self.delaytextbox = QLineEdit(self)
        self.delaytextbox.move(80, 20)
        self.delaytextbox.resize(40, 20)

        self.inputlabel = QLabel('Input:', self)
        self.inputlabel.move(20, 50)

        self.inputtextbox = QLineEdit(self)
        self.inputtextbox.move(80, 50)
        self.inputtextbox.resize(40, 20)

        self.inputbutton = QPushButton('Grab Input', self)
        self.inputbutton.move(130, 50)
        self.inputbutton.clicked.connect(self.grabInput)

        self.textbox = QLineEdit(self)
        self.textbox.move(20, 80)
        self.textbox.resize(200, 20)

        self.button = QPushButton('Grab Coords', self)
        self.button.move(20, 110)
        self.button.clicked.connect(self.grabCoords)

        self.setGeometry(300, 300, 250, 150)
        self.setWindowTitle('Mouse Coordinates')
        self.show()

    def grabCoords(self):

        self.setWindowOpacity(0.25)
        self.setWindowState(Qt.WindowFullScreen)
        QApplication.instance().installEventFilter(self)

    def grabInput(self):

        self.inputtextbox.installEventFilter(self)

    def eventFilter(self, obj, event):

        if event.type() == QEvent.MouseButtonPress:
            x = QCursor.pos().x()
            y = QCursor.pos().y()

            self.textbox.setText('x: ' + str(x) + ', y: ' + str(y))

            self.setWindowState(Qt.WindowNoState)
            self.setWindowOpacity(1.0)
            self.setGeometry(300, 300, 250, 150)
            QApplication.instance().removeEventFilter(self)

            return True

        return super().eventFilter(obj, event)

if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())