Question

我试图单击QComboBox以获得端口列表，并调整其大小，以便可以看到完整的端口名称，但是我遇到了一些问题：我试图在“单击”上连接组合框，但是它不起作用，因此我尝试使用mousepressedevent，但是当我运行脚本时，即使不按该组合键，它也会直接转到该函数。如果用户单击组合框或其下拉列表之外的任何位置，我也想再次使组合框变小。

这是我的代码：这部分是GUI代码：

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(780, 590)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.portList = QtWidgets.QComboBox(self.centralwidget)
        self.portList.setGeometry(QtCore.QRect(50, 50, 50, 25))
        self.portList.setObjectName("portList")
        MainWindow.setCentralWidget(self.centralwidget)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

这是实际代码的一部分：

from PyQt5 import QtWidgets, QtCore, QtGui
from test1 import Ui_MainWindow
import serial.tools.list_ports
import sys
class ApplicationWindow(QtWidgets.QMainWindow):
    def __init__(self):
        super(ApplicationWindow, self).__init__()

        self.ui = Ui_MainWindow()
        self.ui.setupUi(self)
        self.ui.portList.mousePressEvent=self.findPort()
#        self.ui.portList.clicked.connect(self.findPort) <---- this does not work

    def findPort(self):
           comPorts = list(serial.tools.list_ports.comports())    # get a list of all devices connected through serial port
           self.i=0
           for counter in comPorts:
               strPort=str(counter)
               self.ui.portList.addItem("")
               self.ui.portList.setItemText(self.i,strPort)
               self.i=self.i+1 
           if self.i==0:
               self.ui.portList.addItem("")
               self.ui.portList.setItemText(0,"No Ports!")
           else:    
               self.ui.portList.resize(500,25)
    def clickedOutside(self): ####<---- not sure how to connect to this func (when clicked outside of the list)
         self.ui.portList.resize(50,25)
if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    application = ApplicationWindow()
    application.show()
    sys.exit(app.exec_())

如果有人有想法，将不胜感激。

pyqt5-单击QComboBox时连接功能

0 个答案: