Question

我正在使用PyQt5，我知道您可以使用move（）将按钮移至其他位置，但是在这种情况下这对我不起作用，但是当我为某些位置设置位置时，它就起作用了我之前做的按钮。

由于某种原因，当我尝试使小部件DrawImage进入窗口的特定部分时，它从不执行操作，而是停留在左上角。

此DrawImage将插入另一个我将设置DrawImage窗口的类中。关于如何进行此工作的任何想法？

import PyQt5
import sys
#from PyQt5 import QtCore, QtGui, QtWidgets
#from PyQt.QtWidgets import QApplication, QWidget
from PyQt5 import QtWidgets  
from PyQt5 import QtGui, QtCore


class Homework4(QtWidgets.QMainWindow):
    def __init__(self):
        QtWidgets.QWidget.__init__(self)
        self.setup()

    def setup(self):
        self.setGeometry(200, 200, 400, 200)
        self.setWindowTitle('Triangle Peg Game')
        self.setToolTip("Play the triangle peg game!")
        self.Left_button = LeftBtn(self)
        self.Right_button = RightBtn(self)
        self.Top_Button = TopBtn(self)
        self.Down_Button = DownBtn(self)

        #setting the background color
        p = self.palette()
        p.setColor(self.backgroundRole(), QtCore.Qt.gray)
        #p.setColor(self.backgroundRole(), Qt.gray)
        self.setPalette(p)
        self.setAutoFillBackground(True)

        #Central Widget
        self.Draw = DrawImage(self)   #############
        self.setCentralWidget(self.Draw)

        self.show()



class LeftBtn(QtWidgets.QPushButton):
    def __init__(self, parent):
        QtWidgets.QPushButton.__init__(self, parent)
        self.setText("Left")
        self.resize(40,200)
        self.move(0,0)
        #self.clicked.connect(QtWidgets.qApp.quit)    #bind the button to an event slot

class RightBtn(QtWidgets.QPushButton):
    def __init__(self, parent):
        QtWidgets.QPushButton.__init__(self, parent)
        self.setText("Right")
        self.resize(40,200)
        self.move(360,0)
        #self.clicked.connect(QtWidgets.qApp.quit) 

class TopBtn(QtWidgets.QPushButton):
    def __init__(self, parent):
        QtWidgets.QPushButton.__init__(self, parent)
        self.setText("Top")
        self.resize(320,20)
        self.move(40,0)
        #self.clicked.connect(QtWidgets.qApp.quit) 

class DownBtn(QtWidgets.QPushButton):
    def __init__(self, parent):
        QtWidgets.QPushButton.__init__(self, parent)
        self.setText("Down")
        self.resize(320,20)
        self.move(40,180)
        #self.clicked.connect(QtWidgets.qApp.quit)

这是我的DrawImage类：

class DrawImage(QtWidgets.QWidget):  
    def __init__(self, parent):
        QtWidgets.QWidget.__init__(self, parent)
        self.move(200,50)
        self.setFizedSize(100,100)  

    def paintEvent(self, event):              #use to draw on the canvas
        paint = QtGui.QPainter()
        paint.begin(self)

        paint.setRenderHint(QtGui.QPainter.Antialiasing)
        # make a white drawing background
        paint.setBrush(QtCore.Qt.white)
        paint.drawRect(event.rect())
        # for circle make the ellipse radii match
        radx = 10
        rady = 10
        # draw red circles
        paint.setPen(QtCore.Qt.red)
        for k in range(12, 22, 1):    # 125, 220, 10
            center = QtCore.QPoint(k, k)
            # optionally fill each circle yellow
            paint.setBrush(QtCore.Qt.yellow)
            paint.drawEllipse(center, radx, rady)
        paint.end()

if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    main_window = Homework4()     #create an object of Homework4, which contains the main window
    app.exec_()

Answer 1

QMainWindow具有如下所示的预设布局：

此布局用于设置toolbar，menubar，statusbar，dockwidget和centralwidget。布局处理小部件的位置和大小，这就是生成此错误的原因。解决方案是将另一个窗口小部件设置为中央窗口小部件，而您的DrawImage是这个新窗口小部件的儿子。

class Homework4(QtWidgets.QMainWindow):
    def __init__(self):
        QtWidgets.QMainWindow.__init__(self)
        self.setup()

    def setup(self):
        self.setGeometry(200, 200, 400, 200)
        self.setWindowTitle('Triangle Peg Game')
        self.setToolTip("Play the triangle peg game!")
        self.Left_button = LeftBtn(self)
        self.Right_button = RightBtn(self)
        self.Top_Button = TopBtn(self)
        self.Down_Button = DownBtn(self)

        #setting the background color
        p = self.palette()
        p.setColor(self.backgroundRole(), QtCore.Qt.gray)
        #p.setColor(self.backgroundRole(), Qt.gray)
        self.setPalette(p)
        self.setAutoFillBackground(True)

        #Central Widget
        central_widget = QtWidgets.QWidget()
        self.Draw = DrawImage(central_widget)
        self.setCentralWidget(central_widget)

        self.show()

Answer 2

您使用的QMainWindow类具有“中央”窗口小部件的特殊概念。听起来您想让主窗口小部件不是中央窗口小部件，而是“停靠窗口小部件”。您需要熟悉QMainWindow和QWidgets提供的布局。

如何在python中的PyQt中移动中央小部件

2 个答案: