Python 如何使我的应用程序几何体动态更改？

我想修改我的应用程序几何图形以适应我的屏幕几何图形（例如：如果我的屏幕分辨率为1280x720，我的应用程序几何图形将自动从1920x1080更改为1280x720）。我知道它是全屏的，但当我从代码更改屏幕分辨率时，光标所在的位置不会出现该行。所以，请帮帮我

from PyQt5.QtWidgets import QMainWindow, QApplication, QMenu, QMenuBar, QAction, QFileDialog, QDesktopWidget, QLabel, QGridLayout, QActionGroup
from PyQt5.QtGui import QIcon, QImage, QPainter, QPen, QBrush
from PyQt5.QtCore import Qt, QPoint
from PyQt5 import QtWidgets
from PyQt5 import QtGui
import sys

class Window(QMainWindow):
    def __init__(self):
        super().__init__()

        title="Draw!"
        top= 400
        left= 400
        width= 1920
        height= 1080

        icon="icons/paint.png"

        self.setWindowTitle(title)
        self.setGeometry(top, left, width, height)
        self.showFullScreen()
        self.setWindowIcon(QIcon(icon))

        self.image= QImage(self.size(), QImage.Format_RGB32)
        self.image.fill(Qt.white)

        self.drawing= False
        self.brushSize= 2
        self.brushColor= Qt.black
        self.lastPoint= QPoint()

        mainMenu=self.menuBar()
        fileMenu=mainMenu.addMenu("File")
        brushSize=mainMenu.addMenu("Brush Size")
        brushColor=mainMenu.addMenu("Brush Color")

        quitAction= QtWidgets.QAction("Quit", self.window())
        quitAction.setShortcut("Esc")
        fileMenu.addAction(quitAction)
        quitAction.triggered.connect(self.exit)

        saveAction=QAction(QIcon("icons/save.png"), "Save",self)
        saveAction.setShortcut("Ctrl+S")
        fileMenu.addAction(saveAction)
        saveAction.triggered.connect(self.save)

        clearAction=QAction(QIcon("icons/clear.png"), "Clear",self)
        clearAction.setShortcut("Ctrl+C")
        fileMenu.addAction(clearAction)
        clearAction.triggered.connect(self.clear)

        eraseAction=QAction(QIcon("icons/erase.png"), "Erase",self)
        eraseAction.setShortcut("Ctrl+E")
        fileMenu.addAction(eraseAction)
        eraseAction.triggered.connect(self.erase)

        threepxAction=QAction(QIcon("icons/threepx.png"), "3px", self)
        brushSize.addAction(threepxAction)
        threepxAction.triggered.connect(self.threePixel)

        fivepxAction=QAction(QIcon("icons/fivepx.png"), "5px", self)
        brushSize.addAction(fivepxAction)
        fivepxAction.triggered.connect(self.fivePixel)

        sevenpxAction=QAction(QIcon("icons/sevenpx.png"), "7px", self)
        brushSize.addAction(sevenpxAction)
        sevenpxAction.triggered.connect(self.sevenPixel)

        ninepxAction=QAction(QIcon("icons/ninepx.png"), "9px", self)
        brushSize.addAction(ninepxAction)
        ninepxAction.triggered.connect(self.ninePixel)

        elevenpxAction=QAction(QIcon("icons/elevenpx.png"), "11px", self)
        brushSize.addAction(elevenpxAction)
        elevenpxAction.triggered.connect(self.elevenPixel)

        twentypxAction=QAction(QIcon("icons/twentypx.png"), "20px", self)
        brushSize.addAction(twentypxAction)
        twentypxAction.triggered.connect(self.twentyPixel)

        bucketpxAction=QAction(QIcon("icons/bucketpx.png"), "Bucket", self)
        brushSize.addAction(bucketpxAction)
        bucketpxAction.triggered.connect(self.bucketPixel)

        blackAction=QAction(QIcon("icons/black.png"), "Black", self)
        blackAction.setShortcut("Ctrl+B")
        brushColor.addAction(blackAction)
        blackAction.triggered.connect(self.blackColor)

        whiteAction=QAction(QIcon("icons/white.png"), "White", self)
        whiteAction.setShortcut("Ctrl+W")
        brushColor.addAction(whiteAction)
        whiteAction.triggered.connect(self.whiteColor)

        redAction=QAction(QIcon("icons/red.png"), "Red", self)
        redAction.setShortcut("Ctrl+R")
        brushColor.addAction(redAction)
        redAction.triggered.connect(self.redColor)

        greenAction=QAction(QIcon("icons/green.png"), "Green", self)
        greenAction.setShortcut("Ctrl+G")
        brushColor.addAction(greenAction)
        greenAction.triggered.connect(self.greenColor)

        yellowAction=QAction(QIcon("icons/yellow.png"), "Yellow", self)
        yellowAction.setShortcut("Ctrl+Y")
        brushColor.addAction(yellowAction)
        yellowAction.triggered.connect(self.yellowColor)

        blueAction=QAction(QIcon("icons/blue.png"), "Blue", self)
        blueAction.setShortcut("Ctrl+B")
        brushColor.addAction(blueAction)
        blueAction.triggered.connect(self.blueColor)



    def mousePressEvent(self, event):
        if event.button() == Qt.LeftButton:
            self.drawing= True
            self.lastPoint= event.pos()
            #print(self.lastPoint)


    def mouseMoveEvent(self, event):
        if(event.buttons() & Qt.LeftButton) & self.drawing:
            painter=QPainter(self.image)
            painter.setPen(QPen(self.brushColor, self.brushSize, Qt.SolidLine, Qt.RoundCap, Qt.RoundJoin))
            painter.drawLine(self.lastPoint, event.pos())
            self.lastPoint= event.pos()
            self.update()


    def mouseReleaseEvent(self, event):
        if event.button() ==Qt.LeftButton:
            self.drawing= False

    def paintEvent(self, event):
        canvasPainter=QPainter(self)
        canvasPainter.drawImage(self.rect(), self.image, self.image.rect())
    

    def save(self):
        filePath, _=QFileDialog.getSaveFileName(self, "Save Image", "", "PNG(*.png);;JPEG(*.jpg *.jpeg);;All Files(*.*)")
        if filePath=="":
            return
        self.image.save(filePath)

    def exit(self):
        QtWidgets.qApp.quit()

    def clear(self):
        self.image.fill(Qt.white)
        self.update()

    def erase(self):
        self.brushSize= 5
        self.brushColor=Qt.white



    def threePixel(self):
        self.brushSize= 3
    def fivePixel(self):
        self.brushSize= 5
    def sevenPixel(self):
        self.brushSize= 7
    def ninePixel(self):
        self.brushSize= 9
    def elevenPixel(self):
        self.brushSize = 11
    def twentyPixel(self):
        self.brushSize = 20


    def blackColor(self):
        self.brushColor=Qt.black
    def whiteColor(self):
        self.brushColor=Qt.white
    def redColor(self):
        self.brushColor=Qt.red
    def greenColor(self):
        self.brushColor=Qt.green
    def yellowColor(self):
        self.brushColor=Qt.yellow
    def blueColor(self):
        self.brushColor=Qt.blue
    def bucketPixel(self):
        self.image.fill(self.brushColor)



if __name__=="__main__":
    app=QApplication(sys.argv)
    window= Window()
    window.show()
    app.exec()

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我不确定我是否明白你的问题。问题的标题是指几何图形，但随后您会抱怨绘制的线条。问题是什么？我想让我的应用程序几何体根据什么进行动态更改？还有，你写了“当我从代码更改屏幕分辨率时”，这是什么意思？Qt不允许更改屏幕分辨率。请更具体一点，因为你的整个问题很不清楚。除此之外，它还包含许多不必要的代码，请始终尝试提供（强调最小化）。我希望我的应用程序几何图形能够根据屏幕分辨率动态更改。我仍然不明白：您已经在使用

showFullScreen（）

，即使屏幕分辨率发生变化，也会自动将窗口几何图形更新到屏幕。