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问QLayout:尝试添加QLayout“to QWidget”，它已经具有PyQt5 Python的布局
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Stack Overflow用户

提问于 2021-04-23 13:23:46

回答 1查看 256关注 0票数 1

我正在创建一个PyQt5 QMainWindow窗口，该窗口的图像设置为centralLayout。我想将QMainWindow与QWidget覆盖起来，以便在QVBoxLayout中显示一些QLabels。但是我总是收到这个控制台警告" QLayout :试图添加QLayout‘to QWidget’，它已经有了一个布局“。

这是我的密码

from PyQt5.QtWidgets import QMainWindow, QWidget, QVBoxLayout, QLabel
from PyQt5.QtGui import QFont, QPixmap


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

        self.screen_width = QApplication.desktop().width()
        self.screen_height = QApplication.desktop().height()

        self.font = QFont("Ubuntu")
        self.font.setWordSpacing(2)
        self.font.setLetterSpacing(QFont.AbsoluteSpacing, 1)

        self.master_background = QLabel(self)
        self.setCentralWidget(self.master_background)

        self.font.setWordSpacing(2)
        self.font.setLetterSpacing(QFont.AbsoluteSpacing, 1)
        self.setStyleSheet("background-color:#191F26;")

        self.move(0, 0)
        self.setFixedSize(self.screen_width, self.screen_height)
        self.showFullScreen()

        self.master_identify_device_container = QWidget()
        self.master_identify_device_container.setParent(self)
        self.identify_device_audio_player = QMediaPlayer(self)

        self.frontend()
        self.identify_device()

    def frontend(self):
  
           self.master_background.setPixmap(QPixmap("picture.jpg").scaled(self.screen_width, self.screen_height))


    def identify_device(self):

            self.master_identify_device_container.setStyleSheet("background-color:black;")
            self.master_identify_device_container.resize(self.screen_width, self.screen_height)

            self.font.setPointSize(40)

            self.device_name = QLabel(self.master_identify_device_container)
            self.device_name.setFont(self.font)
            self.device_name.setText(f"DEVICE NAME : Test Device")
            self.device_name.setStyleSheet("color:white; font-weight:bold;")

            self.ip_address = QLabel(self.master_identify_device_container)
            self.ip_address.setFont(self.font)
            self.ip_address.setText(f"IP ADDRESS : 127.0.0.1")
            self.ip_address.setStyleSheet("color:white; font-weight:bold;")

            self.device_key = QLabel(self.master_identify_device_container)
            self.device_key.setFont(self.font)
            self.device_key.setText(f"DEVICE KEY : 123456678")
            self.device_key.setStyleSheet("color:white; font-weight:bold;")

            self.api_status = QLabel(self.master_identify_device_container)
            self.api_status.setFont(self.font)
            self.api_status.setText(f"API STATUS : Up")
            self.api_status.setStyleSheet("color:white; font-weight:bold;")

            self.last_api_response_time = QLabel(self.master_identify_device_container)
            self.last_api_response_time.setFont(self.font)
            self.last_api_response_time.setText("LAST API RESPONSE : 5 seconds ago")
            self.last_api_response_time.setStyleSheet("color:white; font-weight:bold;")

            self.master_identify_device_container_layout = QVBoxLayout(self.master_identify_device_container)
            self.master_identify_device_container_layout.setSpacing(0)
            self.master_identify_device_container_layout.setContentsMargins(self.screen_width / 10,
                                                                            self.screen_height / 15,
                                                                            self.screen_width / 10,
                                                                            self.screen_height / 15)

            self.master_identify_device_container_layout.addWidget(self.device_name, alignment=Qt.AlignLeft)
            self.master_identify_device_container_layout.addWidget(self.ip_address, alignment=Qt.AlignLeft)
            self.master_identify_device_container_layout.addWidget(self.device_key, alignment=Qt.AlignLeft)
            self.master_identify_device_container_layout.addWidget(self.api_status, alignment=Qt.AlignLeft)
            self.master_identify_device_container_layout.addWidget(self.last_api_response_time, alignment=Qt.AlignLeft)

            self.master_identify_device_container.show()

提前感谢

python-3.x

pyqt

pyqt5

qt5

回答 1

Stack Overflow用户

回答已采纳

发布于 2021-04-24 12:22:44

您需要为master_background小部件设置布局：

self.master_identify_device_container_layout = QVBoxLayout(self.master_background)

from PyQt5.QtWidgets import QMainWindow, QWidget, QVBoxLayout, QLabel, QApplication
from PyQt5.QtGui import QFont, QPixmap
from PyQt5.Qt import *


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

        self.screen_width = QApplication.desktop().width()
        self.screen_height = QApplication.desktop().height()

        self.font = QFont("Ubuntu")
        self.font.setWordSpacing(2)
        self.font.setLetterSpacing(QFont.AbsoluteSpacing, 1)

        self.master_background = QLabel(self)                      
        self.setCentralWidget(self.master_background)

        self.font.setWordSpacing(2)
        self.font.setLetterSpacing(QFont.AbsoluteSpacing, 1)
        self.setStyleSheet("background-color:#191F26;")

        self.move(0, 0)
        self.setFixedSize(self.screen_width, self.screen_height)
        self.showFullScreen()

        self.master_identify_device_container = QWidget(self)       
#        self.master_identify_device_container.setParent(self)
        self.identify_device_audio_player = QMediaPlayer(self)

        self.frontend()
        self.identify_device()

    def frontend(self):
       self.master_background.setPixmap(QPixmap("opencv_color.jpg").scaled(self.screen_width, self.screen_height))

    def identify_device(self):
        self.master_identify_device_container.setStyleSheet("background-color:black;")
        self.master_identify_device_container.resize(self.screen_width, self.screen_height)

        self.font.setPointSize(40)

        self.device_name = QLabel(self.master_identify_device_container)
        self.device_name.setFont(self.font)
        self.device_name.setText(f"DEVICE NAME : Test Device")
# +++                                                          ---->   vvvvvvvvvvvvvvvvvvvvvvvv                
        self.device_name.setStyleSheet("color:white; font-weight:bold; background: transparent;")

        self.ip_address = QLabel(self.master_identify_device_container)
        self.ip_address.setFont(self.font)
        self.ip_address.setText(f"IP ADDRESS : 127.0.0.1")
        self.ip_address.setStyleSheet("color:white; font-weight:bold; background: transparent;")

        self.device_key = QLabel(self.master_identify_device_container)
        self.device_key.setFont(self.font)
        self.device_key.setText(f"DEVICE KEY : 123456678")
        self.device_key.setStyleSheet("color:white; font-weight:bold; background: transparent;")

        self.api_status = QLabel(self.master_identify_device_container)
        self.api_status.setFont(self.font)
        self.api_status.setText(f"API STATUS : Up")
        self.api_status.setStyleSheet("color:white; font-weight:bold; background: transparent;")

        self.last_api_response_time = QLabel(self.master_identify_device_container)
        self.last_api_response_time.setFont(self.font)
        self.last_api_response_time.setText("LAST API RESPONSE : 5 seconds ago")
        self.last_api_response_time.setStyleSheet("color:white; font-weight:bold; background: transparent;")

#        self.master_identify_device_container_layout = QVBoxLayout(self.master_identify_device_container)
        self.master_identify_device_container_layout = QVBoxLayout(self.master_background)

        self.master_identify_device_container_layout.setSpacing(0)
        self.master_identify_device_container_layout.setContentsMargins(self.screen_width / 10,
                                                                        self.screen_height / 15,
                                                                        self.screen_width / 10,
                                                                        self.screen_height / 15)

        self.master_identify_device_container_layout.addWidget(self.device_name, alignment=Qt.AlignLeft)
        self.master_identify_device_container_layout.addWidget(self.ip_address, alignment=Qt.AlignLeft)
        self.master_identify_device_container_layout.addWidget(self.device_key, alignment=Qt.AlignLeft)
        self.master_identify_device_container_layout.addWidget(self.api_status, alignment=Qt.AlignLeft)
        self.master_identify_device_container_layout.addWidget(self.last_api_response_time, alignment=Qt.AlignLeft)

#        self.master_identify_device_container.show()
            
if __name__ == '__main__': 
    import sys
    app = QApplication(sys.argv)
    w = GameIdle()
    w.show()
    sys.exit(app.exec_())

票数 1

页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持

原文链接：

https://stackoverflow.com/questions/67230772

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