传递 currentTextChanged 的值

Question

下面是一段代码

目前 combobox 由 self.Cbox.btn.clicked.connect(self.Goto_Analyze) 管理。

我想避免使用 btn 并使用 currentTextChanged 但是无论我把它放在哪里都会出错。

    self.MyCbox = QtWidgets.QComboBox(self.My_tab)
    self.MyCbox.setGeometry(QtCore.QRect(700, 30, 100, 21))
    self.MyCbox.setObjectName("MyCbox")
    self.MyCbox.addItems(Functions.nbr)
    
    aa  = str(self.MyCbox.currentText())
    print(aa) # aa = 6
    self.Cbox.btnsetText(_translate("Library_main", "Select"))
    self.Cbox.btnclicked.connect(self.Goto_Analyze)
    


def Goto_Analyze(self, ): 
        aa = str(self.MyCbox.currentTextChanged())
        [...]
        some code


File "../index.py", line 796, in Goto_Analyze
aa = str(self.MyCbox.currentTextChanged())
TypeError: native Qt signal is not callable

Answer 1

是signal所以你需要

currentTextChanged.connect(...)

喜欢信号 clicked 你需要 clicked.connect(...)

最少的工作代码

from PyQt5 import QtWidgets

class MyWindow(QtWidgets.QWidget):
    
    def __init__(self, parent=None):
        super().__init__(parent)

        
        self.cbox = QtWidgets.QComboBox(self)  # PEP8: `lower_case_name` for variables
        self.cbox.addItems([str(x) for x in range(3)])

        self.cbox.currentTextChanged.connect(self.goto_analyze)

    def goto_analyze(self, value):  # PEP8: `lower_case_name` for functions
        print(type(value), value)

if __name__ == "__main__":
    app = QtWidgets.QApplication([])
    win = MyWindow()
    win.show()
    app.exec()

PEP 8 -- Style Guide for Python Code

传递 currentTextChanged 的值

Pass the value of currentTextChanged

python

combobox

pyqt5

传递 currentTextChanged 的​​值

Pass the value of currentTextChanged

python

combobox

pyqt5

传递 currentTextChanged 的值