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()

Display CPU and Virtual Memory in Realtime with PyQt6 and Matplotlib

 This demo program shows how to display in real time the CPU usage and Virtual Memory Usage in % using a donut shape graph from matplotlib.

The output:

The Code:

1 159

import sys import psutil import os from PyQt6.QtWidgets import QApplication, QWidget, QLabel from PyQt6.QtGui import QFont from PyQt6.QtCore import QTimer, QTime, Qt from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg from matplotlib.figure import Figure from matplotlib.patches import Circle i = 5 d = 95 class MplCanvas(FigureCanvasQTAgg): def __init__(self, parent=None, width=5, height=4, dpi=100): super(MplCanvas, self).__init__(Figure(figsize=(width, height), dpi=dpi)) self.axes = self.figure.add_subplot(111) self.setParent(parent) class MplWidget(QWidget): def __init__(self, parent=None): global i global d QWidget.__init__(self, parent) self.canvas = MplCanvas(self) self.canvas1 = MplCanvas(self) d = 100 - i labels = ["a", "b"] data = [d, i] #colors = ["#f2f2f2", "#ff9999"] colors = ["#f2f2f2", "blue"] self.canvas.axes.pie( data, colors=colors, startangle=90, pctdistance=0.85 ) self.canvas1.axes.pie( data, colors=colors, startangle=90, pctdistance=0.85 ) centre_circle = Circle((0, 0), 0.70, fc="white") self.canvas.axes.add_artist(centre_circle) self.canvas.axes.axis("equal") self.canvas.figure.tight_layout() self.canvas.setGeometry(75,75,100,100) self.canvas.draw() centre_circle1 = Circle((0, 0), 0.70, fc="white") self.canvas1.axes.add_artist(centre_circle1) self.canvas1.axes.axis("equal") self.canvas1.figure.tight_layout() self.canvas1.setGeometry(200,75,100,100) self.canvas1.draw() fnt = QFont('Open Sans', 11, QFont.Weight.Bold) fnt1 = QFont('Open Sans', 9) self.lbl = QLabel(self) self.lbl.setAlignment(Qt.AlignmentFlag.AlignCenter) self.lbl.setFont(fnt) self.lbl.setGeometry(78,110,100, 30) self.lbl1 = QLabel(self) self.lbl1.setAlignment(Qt.AlignmentFlag.AlignCenter) self.lbl1.setFont(fnt1) self.lbl1.setGeometry(78,50,100, 30) self.lbl1.setText('CPU Usage') self.lbl2 = QLabel(self) self.lbl2.setAlignment(Qt.AlignmentFlag.AlignCenter) self.lbl2.setFont(fnt) self.lbl2.setGeometry(200,110,100, 30) self.lbl3 = QLabel(self) self.lbl3.setAlignment(Qt.AlignmentFlag.AlignCenter) self.lbl3.setFont(fnt1) self.lbl3.setGeometry(200,50,100, 30) self.lbl3.setText('Virtual Mem Usage') timer = QTimer(self) timer.timeout.connect(self.showTime) timer.start(10000) # update every second self.setGeometry(50,75,400,250) self.setWindowTitle('Post 29') self.showTime() def showTime(self): global i global d #currentTime = QTime.currentTime() i = psutil.cpu_percent() #displayTxt = currentTime.toString('hh:mm:ss') self.lbl.setText(str(i) + '%') d = 100 - i labels = ["a", "b"] data = [d, i] colors = ["#f2f2f2", "blue"] self.canvas.axes.pie( data, colors=colors, startangle=90, pctdistance=1 ) colors = ["#f2f2f2", "green"] centre_circle = Circle((0, 0), 0.85, fc="white") self.canvas.axes.add_artist(centre_circle) self.canvas.axes.axis("equal") self.canvas.figure.tight_layout() self.canvas.setGeometry(75,75,100,100) self.canvas.draw() i = psutil.virtual_memory().available * 100 / psutil.virtual_memory().total self.lbl2.setText(str(round(i,2)) + '%') d = 100 - i data = [d, i] self.canvas1.axes.pie( data, colors=colors, startangle=90, pctdistance=1 ) centre_circle1 = Circle((0, 0), 0.85, fc="white") self.canvas1.axes.add_artist(centre_circle1) self.canvas1.axes.axis("equal") self.canvas1.figure.tight_layout() self.canvas1.setGeometry(200,75,100,100) self.canvas1.draw() #self.update i = i + 5 def main(): app = QApplication(sys.argv) widget = MplWidget() widget.show() sys.exit(app.exec()) if __name__ == "__main__": main()

Display Map with Markers and Polygons with Folium and PyQt6

This demo program show how to create a folium map and attach it to qwbengineview to place is anywhere on a window and update the map with a press of a button.

The Output:

The code:

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import sys import io import folium from PyQt5.QtWidgets import QApplication, QWidget, QMainWindow, QApplication, QPushButton from PyQt5.QtWebEngineWidgets import QWebEngineView # pip install PyQtWebEngine class Window(QMainWindow): def __init__(self): super(Window, self).__init__() self.initUI() def initUI(self): self.pb1 = QPushButton('Update', self) self.pb1.setGeometry(340, 330, 100, 30) self.pb1.clicked.connect(self.onClick_pb2) coordinate = (15.872172863923, 120.39238696289) m = folium.Map( #tiles='Stamen Terrain', #tiles='cartodbpositron', tiles='Stamen Toner', zoom_start=13, location=coordinate ) folium.Rectangle([(15.882172863923, 120.41238696289), (15.862172863923, 120.38238696289)], color="blue", weight=1, fill=True, fill_color="blue", fill_opacity=0.1).add_to(m) folium.Marker(location=[15.872172863923, 120.39238696289],popup='Basista',tooltip='Click here to see Popup',icon=folium.Icon(color='purple',prefix='fa',icon='anchor')).add_to(m) # save map data to data object data = io.BytesIO() m.save(data, close_file=False) self.webView = QWebEngineView(self) self.webView.setHtml(data.getvalue().decode()) self.webView.setGeometry(20,20, 420,280) self.setGeometry(25, 45, 450, 370) self.setWindowTitle('Post 28') self.show() def onClick_pb2(self): coordinate1 = (14.5409, 121.0503) m = folium.Map( #tiles='Stamen Terrain', tiles='cartodbpositron', zoom_start=18, location=coordinate1 ) folium.Circle(location=[14.5409, 121.0503], popup='BGC', fill_color='green', fill_opacity=0.1, radius=50, weight=0, color="green").add_to(m) folium.Marker(location=[14.5409, 121.0503],popup='BGC',tooltip='Click here to see Popup').add_to(m) data = io.BytesIO() m.save(data, close_file=False) self.webView.setHtml(data.getvalue().decode()) def main(): app = QApplication(sys.argv) ex = Window() ex.show() sys.exit(app.exec()) if __name__ == '__main__': main()

Create Volume Control Dial, List box, Toggle Button, Slider and a Spin Box in PyQt6

This demo program shows how to create Volume Control Dial, List box, Toggle Button, Slider and a Spin Box and place on specific location in a window.

The output:

The code:

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from PyQt6.QtWidgets import (QWidget, QSlider, QListWidget, QSpinBox, QPushButton, QDial, QLabel, QApplication) from PyQt6.QtCore import Qt from PyQt6.QtGui import QPixmap import sys on_load = 0 class Example(QWidget): def __init__(self): super().__init__() self.initUI() def initUI(self): self.redb = QPushButton('Horizontal', self) self.redb.setCheckable(True) self.redb.setGeometry(20, 5, 80, 20) self.redb.clicked[bool].connect(self.setColor) self.sld = QSlider(Qt.Orientation.Horizontal, self) self.sld.setFocusPolicy(Qt.FocusPolicy.NoFocus) self.sld.setGeometry(30, 45, 200, 30) self.sld.valueChanged[int].connect(self.changeValue) self.sld.setSingleStep(2) self.sld1 = QSlider(Qt.Orientation.Vertical, self) self.sld1.setFocusPolicy(Qt.FocusPolicy.NoFocus) self.sld1.setGeometry(255, 45, 30, 200) self.sld1.valueChanged[int].connect(self.changeValue1) self.sld1.setSingleStep(2) self.label = QLabel(self) self.label.setGeometry(30, 20, 200, 30) self.label.setAlignment(Qt.AlignmentFlag.AlignCenter) self.widget = QListWidget(self) self.widget.addItems(["One", "Two", "Three"]) self.widget.setGeometry(30, 95, 75, 120) self.llabel = QLabel(self) self.llabel.setGeometry(100, 115, 75, 30) self.llabel.setAlignment(Qt.AlignmentFlag.AlignCenter) self.label.setText('slide the bar') self.llabel.setText('click an item') #self.widget.currentItemChanged.connect(self.index_changed) self.widget.currentTextChanged.connect(self.text_changed) self.widget1 = QSpinBox(self) self.widget1.setMinimum(-10) self.widget1.setMaximum(10) self.widget1.setPrefix("$") self.widget1.setSuffix("c") self.widget1.setGeometry(30, 235, 75, 30) self.slabel = QLabel(self) self.slabel.setGeometry(115, 235, 75, 30) self.slabel.setText('click to change the value') self.dialer = QDial(self) self.dialer.setRange(0, 100) self.dialer.setSingleStep(0.5) self.dialer.valueChanged.connect(self.value_changed_dialer) self.dialer.setNotchesVisible(True) self.dialer.move(110,300) self.dslabel = QLabel(self) self.dslabel.setGeometry(125, 400, 75, 30) self.dslabel.setText('rotate the dial') self.dslabel.setAlignment(Qt.AlignmentFlag.AlignCenter) self.widget1.textChanged.connect(self.value_changed_str) self.setGeometry(200, 100, 350, 430) self.setWindowTitle('Post 27') self.show() def value_changed_dialer(self, i): self.dslabel.setText(str(i)) def setColor(self, pressed): if pressed: self.redb.setText("Vertical") else: self.redb.setText("Horizontal") def value_changed_str(self, s): self.slabel.setText(s) #def index_changed(self, i): # Not an index, i is a QListItem # print(i.text()) # self.llabel.setText(i.text()) def text_changed(self, s): # s is a str global on_load print(s) if on_load == 1: self.llabel.setText(s) on_load = 1 def changeValue(self, value): self.label.setText(str(value)) self.sld1.setValue(value) self.sld1.repaint() def changeValue1(self, value): self.label.setText(str(value)) self.sld.setValue(value) self.sld.repaint() def main(): app = QApplication(sys.argv) ex = Example() sys.exit(app.exec()) if __name__ == '__main__': main() on_load = 1

Checkbox, Radiobutton and ComboBox in PyQt6

This demo program shows how to create checkbox, radiobutton and combobox and place them at certain location in the window.

The output:

The Code:

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import sys import os from PyQt6.QtWidgets import QMainWindow, QApplication, QWidget, QComboBox, QLineEdit, QLabel, QRadioButton, QButtonGroup, QCheckBox, QHBoxLayout, QVBoxLayout from PyQt6 import QtCore, QtGui class Window(QMainWindow): def __init__(self): super(Window, self).__init__() self.initUI() def initUI(self): self.setCentralWidget(QWidget(self)) self.line_edit = QLineEdit(self) self.line_edit.setGeometry(25, 25, 150, 40) self.line_edit.setFocusPolicy(QtCore.Qt.FocusPolicy.StrongFocus) self.line_edit.setFocus() self.line_edit.setPlaceholderText('Enter Text Here') self.linelabel = QLabel('Entered Text Here', self) self.linelabel.setGeometry(25, 35, 180, 120) self.linelabel.setWordWrap(True) self.langs ={'c':0, 'cpp':0, 'java':0, 'python':0} self.checkBox_c = QCheckBox(self) self.checkBox_c.setGeometry(25, 155, 81, 20) self.checkBox_c.stateChanged.connect(self.checkedc) self.checkBox_cpp = QCheckBox(self) self.checkBox_cpp.setGeometry(116, 155, 81, 20) self.checkBox_cpp.stateChanged.connect(self.checkedcpp) self.checkBox_java = QCheckBox(self) self.checkBox_java.setGeometry(207, 155, 81, 20) self.checkBox_java.stateChanged.connect(self.checkedjava) self.checkBox_py = QCheckBox(self) self.checkBox_py.setGeometry(298, 155, 81, 20) self.checkBox_py.stateChanged.connect(self.checkedpy) self.checkBox_c.setText("C") self.checkBox_cpp.setText( "C++") self.checkBox_java.setText("Java") self.checkBox_py.setText("Python") self.clabel1 = QLabel(self) self.clabel1.setGeometry(25, 130, 200, 20) self.clabel1.setText("Select the Language you know:") self.radioButton_male = QRadioButton(self) self.radioButton_male.setGeometry(45, 200, 81, 20) self.radioButton_male.toggled.connect(self.maleselected) self.radioButton_female = QRadioButton(self) self.radioButton_female.setGeometry(45, 225, 81, 20) self.radioButton_female.toggled.connect(self.femaleselected) self.radioButton_small = QRadioButton(self) self.radioButton_small.setGeometry(215, 200, 81, 20) self.radioButton_small.toggled.connect(self.smallselected) self.radioButton_medium = QRadioButton(self) self.radioButton_medium.setGeometry(215, 225, 81, 20) self.radioButton_medium.toggled.connect(self.mediumselected) self.radioButton_large = QRadioButton(self) self.radioButton_large.setGeometry(215, 245, 81, 20) self.radioButton_large.toggled.connect(self.largeselected) self.label = QLabel(self) self.label.setGeometry(45, 250, 150, 20) self.slabel = QLabel(self) self.slabel.setGeometry(215, 270, 150, 20) self.radioButton_male.setText("Male") self.label.setText("Select your gender:") self.radioButton_female.setText("Female") self.radioButton_small.setText("Small") self.radioButton_medium.setText("Medium") self.slabel.setText("Select your size:") self.radioButton_large.setText("Large") gender_group=QButtonGroup(self) size_group=QButtonGroup(self) gender_group.addButton(self.radioButton_male) gender_group.addButton(self.radioButton_female) size_group.addButton(self.radioButton_small) size_group.addButton(self.radioButton_medium) size_group.addButton(self.radioButton_large) self.combo_box = QComboBox(self) self.combo_box.setGeometry(125, 315, 120, 20) self.combo_box.addItem("Black") self.combo_box.addItem("Blue") self.combo_box.addItem("Brown") self.combo_box.addItem("Red") self.combo_box_label = QLabel(self) self.combo_box_label.setGeometry(25, 315, 100, 20) self.combo_box_label.setText("Select color:") self.combo_box_label_s = QLabel(self) self.combo_box_label_s.setGeometry(255, 315, 100, 20) self.line_edit.returnPressed.connect(lambda: self.do_action()) self.combo_box.activated.connect(self.on_combobox_changed) self.setGeometry(25, 45, 400, 360) self.setWindowTitle('Post 26') self.show() def on_combobox_changed(self, value): print("combobox changed", value) self.combo_box_label_s.setText(self.combo_box.currentText()) def mouseMoveEvent(self, e): x = int(e.position().x()) y = int(e.position().y()) #text = f'x: {x}, y: {y}' #self.linelabel.setText(text) self.line_edit.setFocus() def maleselected(self, selected): if selected: self.label.setText("You are male") def femaleselected(self, selected): if selected: self.label.setText("You are female") def smallselected(self, selected): if selected: self.slabel.setText("Your size is small") def mediumselected(self, selected): if selected: self.slabel.setText("Your size is medium") def largeselected(self, selected): if selected: self.slabel.setText("Your size is large") def checkedc(self, checked): if checked: self.langs['c']= 1 else: self.langs['c']= 0 self.show1() def checkedcpp(self, checked): if checked: self.langs['cpp']= 1 else: self.langs['cpp']= 0 self.show1() def checkedjava(self, checked): if checked: self.langs['java']= 1 else: self.langs['java']= 0 self.show1() def checkedpy(self, checked): if checked: self.langs['python']= 1 else: self.langs['python']= 0 self.show1() def show1(self): checkedlangs =', '.join([key for key in self.langs.keys() if self.langs[key]== 1]) # Updates message having list of all selected languages. self.clabel1.setText("You know "+checkedlangs) def do_action(self): value = self.line_edit.text() self.linelabel.setText(value) def main(): app = QApplication(sys.argv) ex = Window() ex.show() sys.exit(app.exec()) if __name__ == '__main__': main()