Create a Lock Screen in Windows with PyQt6

This demo program shows how to create a lockscreen and detect any movement within the Windows OS. 

The Output: 

 

The Code: 

 

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import sys from PyQt6.QtCore import * from PyQt6.QtGui import * from PyQt6.QtWidgets import * import time from ctypes import * x_idle = 0 x_idle_toggle = 0 start_tmr = 0 class XScreenSaverInfo(Structure): _fields_ = [('window', c_long), ('state', c_int), ('kind', c_int), ('til_or_since',c_ulong), ('idle', c_ulong), ('eventMask', c_ulong)] class LASTINPUTINFO(Structure): _fields_ = [ ('cbSize', c_uint), ('dwTime', c_uint), ] def get_idle_duration(): lastInputInfo = LASTINPUTINFO() lastInputInfo.cbSize = sizeof(lastInputInfo) windll.user32.GetLastInputInfo(byref(lastInputInfo)) millis = windll.kernel32.GetTickCount() - lastInputInfo.dwTime return millis / 1000.0 class inputdialogdemo(QMainWindow): def __init__(self, parent = None): super(inputdialogdemo, self).__init__(parent) fnt = QFont('Open Sans', 16, QFont.Weight.Bold) self.lblIdle = QLabel('Idle Time', self) self.lblIdle.setFont(fnt) self.lblIdle.setGeometry(20, 40, 300, 30) pb3 = QPushButton('Show Lockscreen ', self) pb3.setGeometry(50, 100, 130, 30) pb3.clicked.connect(self.onClick_pb3) pb5 = QPushButton('Reset Idle', self) pb5.setGeometry(200, 100, 130, 30) pb5.clicked.connect(self.onClick_pb5) self.timer = QTimer(self) self.timer.timeout.connect(self.showTime) self.timer.start(1000) # update every second self.move(100, 200) self.setFixedSize(400, 300) self.setWindowTitle('Post 30') def exec_idel(self): global x_idle_toggle global x_idle global start_tmr while x_idle_toggle ==1: GetLastInputInfo = int(get_idle_duration()) print(GetLastInputInfo) if GetLastInputInfo == 1: start_tmr = 1 x_idle = 0 x_idle_toggle = 0 #self.timer.stop() self.buildExamplePopup() break if GetLastInputInfo == 1: start_tmr = 1 x_idle = 0 x_idle_toggle = 0 #self.timer.stop() self.buildExamplePopup() break time.sleep(1) def start_timer(self): global x_idle x_idle = 0 #self.timer = QTimer(self) #self.timer.timeout.connect(self.showTime) self.lblIdle.setText("Idle Time: " + str(x_idle)) self.timer.start(1000) # update every second def mousePressEvent(self, QMouseEvent): global x_idle x_idle = 0 def showTime(self): global x_idle global x_idle_toggle global start_tmr self.lblIdle.setText("Idle Time: " + str(x_idle)) if start_tmr == 0: x_idle = x_idle + 1 if x_idle > 10 and x_idle_toggle == 0: x_idle_toggle = 1 x_idle = 0 self.exec_idel() def onClick_pb5(self): global x_idle x_idle = 0 self.lblIdle.setText("Idle Time: " + str(x_idle)) self.timer.start(1000) def onClick_pb3(self): global x_idle global start_tmr start_tmr = 1 x_idle = 0 #self.timer.stop() self.buildExamplePopup() def buildExamplePopup(self): name = 'Lock Screen' self.exPopup = examplePopup(name) #self.exPopup.setGeometry(self.pos().x()+50, self.pos().y()+75, 300, 225) self.exPopup.move(self.pos().x()+50, self.pos().y()+75) self.exPopup.setFixedSize(300, 225) self.exPopup.show() class examplePopup(QMainWindow): def __init__(self, name): super().__init__() self.name = name self.setWindowFlags(Qt.WindowType.Window | Qt.WindowType.CustomizeWindowHint | Qt.WindowType.WindowStaysOnTopHint) self.initUI() def initUI(self): fnt = QFont('Open Sans', 16, QFont.Weight.Bold) lblName = QLabel(self.name, self) lblName.setFont(fnt) lblName.setGeometry(50, 40, 200, 30) lblpwd = QLabel('Password', self) lblpwd.setStyleSheet('QLabel {background-color: transparent; color: black;}') lblpwd.setGeometry(25, 115, 100, 30) txtpwd = QLineEdit('', self) txtpwd.setPlaceholderText("Enter Password Here") txtpwd.setGeometry(110, 115, 150, 30) txtpwd.setEchoMode(QLineEdit.EchoMode.Password) pb4 = QPushButton('Ok', self) pb4.move(90, 175) pb4.clicked.connect(self.onClick_pb4) def mousePressEvent(self, QMouseEvent): global x_idle x_idle = 0 def onClick_pb4(self): global x_idle global start_tmr start_tmr = 0 x_idle = 0 self.close() def main(): app = QApplication(sys.argv) ex = inputdialogdemo() ex.show() sys.exit(app.exec()) if __name__ == '__main__': main()