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[PyQt] making dependant comboBoxes
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[PyQt] making dependant comboBoxes
Hitsugaya
Unladen Swallow
Posts: 2
Threads: 1
Joined: May 2019
Reputation: 0
#1
May-21-2019, 03:50 PM (This post was last modified: May-21-2019, 11:11 PM by Yoriz.)
Hello,i want to make a dependant combo boxes,where i basically choose 1 option from combobox1 and that option has its own set of options in combobox2. here,when i choose "Roman" from combobox1,i want it to populate other combobox with my already made list.
i keep searching and even though there are some explanations,i can't seem to make it work in my code.

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_Form(object):
    def setupUi(self, Form):
        Form.setObjectName("Form")
        Form.setEnabled(True)
        Form.resize(471, 392)
        icon = QtGui.QIcon()
        icon.addPixmap(QtGui.QPixmap("iconfinder_Bleach_197477.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        Form.setWindowIcon(icon)
        self.label_author = QtWidgets.QLabel(Form)
        self.label_author.setEnabled(True)
        self.label_author.setGeometry(QtCore.QRect(340, 355, 121, 31))
        font = QtGui.QFont()
        font.setFamily("Nimbus Mono L")
        font.setPointSize(9)
        self.label_author.setFont(font)
        self.label_author.setObjectName("label_author")
        self.label_1 = QtWidgets.QLabel(Form)
        self.label_1.setGeometry(QtCore.QRect(12, 42, 50, 22))
        self.label_1.setObjectName("label_1")
        self.label_2 = QtWidgets.QLabel(Form)
        self.label_2.setGeometry(QtCore.QRect(12, 78, 34, 22))
        self.label_2.setObjectName("label_2")
        self.label_3 = QtWidgets.QLabel(Form)
        self.label_3.setGeometry(QtCore.QRect(12, 114, 34, 22))
        self.label_3.setObjectName("label_3")
        self.label_4 = QtWidgets.QLabel(Form)
        self.label_4.setGeometry(QtCore.QRect(12, 150, 50, 22))
        self.label_4.setObjectName("label_4")
        self.lineEdit_1 = QtWidgets.QLineEdit(Form)
        self.lineEdit_1.setGeometry(QtCore.QRect(68, 42, 142, 30))
        self.lineEdit_1.setObjectName("lineEdit_1")
        self.lineEdit_2 = QtWidgets.QLineEdit(Form)
        self.lineEdit_2.setGeometry(QtCore.QRect(68, 78, 142, 30))
        self.lineEdit_2.setObjectName("lineEdit_2")
        self.lineEdit_3 = QtWidgets.QLineEdit(Form)
        self.lineEdit_3.setGeometry(QtCore.QRect(68, 114, 142, 30))
        self.lineEdit_3.setObjectName("lineEdit_3")
        self.lineEdit_4 = QtWidgets.QLineEdit(Form)
        self.lineEdit_4.setGeometry(QtCore.QRect(68, 150, 142, 30))
        self.lineEdit_4.setObjectName("lineEdit_4")
        self.label = QtWidgets.QLabel(Form)
        self.label.setGeometry(QtCore.QRect(10, 360, 91, 22))
        font = QtGui.QFont()
        font.setFamily("FreeMono")
        font.setBold(False)
        font.setItalic(True)
        font.setUnderline(False)
        font.setWeight(50)
        font.setStrikeOut(False)
        font.setKerning(True)
        self.label.setFont(font)
        self.label.setObjectName("label")
        self.line = QtWidgets.QFrame(Form)
        self.line.setGeometry(QtCore.QRect(11, 187, 227, 16))
        self.line.setFrameShape(QtWidgets.QFrame.HLine)
        self.line.setFrameShadow(QtWidgets.QFrame.Sunken)
        self.line.setObjectName("line")
        self.pushButton = QtWidgets.QPushButton(Form)
        self.pushButton.setGeometry(QtCore.QRect(140, 355, 161, 31))
        self.pushButton.setObjectName("pushButton")
        self.label_5 = QtWidgets.QLabel(Form)
        self.label_5.setGeometry(QtCore.QRect(10, 211, 43, 31))
        self.label_5.setObjectName("label_5")
        self.lineEdit_5 = QtWidgets.QLineEdit(Form)
        self.lineEdit_5.setGeometry(QtCore.QRect(70, 210, 141, 30))
        self.lineEdit_5.setReadOnly(True)
        self.lineEdit_5.setObjectName("lineEdit_5")
        self.line_2 = QtWidgets.QFrame(Form)
        self.line_2.setGeometry(QtCore.QRect(10, 260, 227, 16))
        self.line_2.setFrameShape(QtWidgets.QFrame.HLine)
        self.line_2.setFrameShadow(QtWidgets.QFrame.Sunken)
        self.line_2.setObjectName("line_2")
        self.line_3 = QtWidgets.QFrame(Form)
        self.line_3.setEnabled(True)
        self.line_3.setGeometry(QtCore.QRect(230, 10, 16, 258))
        self.line_3.setLineWidth(1)
        self.line_3.setMidLineWidth(0)
        self.line_3.setFrameShape(QtWidgets.QFrame.VLine)
        self.line_3.setFrameShadow(QtWidgets.QFrame.Sunken)
        self.line_3.setObjectName("line_3")
        self.comboBox_2 = QtWidgets.QComboBox(Form)
        self.comboBox_2.setGeometry(QtCore.QRect(360, 40, 86, 30))
        self.comboBox_2.setObjectName("comboBox")
        self.comboBox = QtWidgets.QComboBox(Form)
        self.comboBox.setGeometry(QtCore.QRect(250, 40, 86, 30))
        self.comboBox.setObjectName("comboBox_2")
        self.comboBox.addItem("")
        self.comboBox.addItem("")
        self.comboBox.addItem("")
        self.label_6 = QtWidgets.QLabel(Form)
        self.label_6.setGeometry(QtCore.QRect(260, 10, 68, 22))
        self.label_6.setAlignment(QtCore.Qt.AlignCenter)
        self.label_6.setObjectName("label_6")
        self.label_7 = QtWidgets.QLabel(Form)
        self.label_7.setGeometry(QtCore.QRect(370, 10, 68, 22))
        self.label_7.setAlignment(QtCore.Qt.AlignCenter)
        self.label_7.setWordWrap(False)
        self.label_7.setObjectName("label_7")

        self.retranslateUi(Form)
        QtCore.QMetaObject.connectSlotsByName(Form)

    def retranslateUi(self, Form):
        _translate = QtCore.QCoreApplication.translate
        Form.setWindowTitle(_translate("Form", "UNI-TRAV Calculator"))
        self.label_author.setText(_translate("Form", "Version:  1.0.0"))
        self.label_1.setText(_translate("Form", "Wood: "))
        self.label_2.setText(_translate("Form", "Clay:"))
        self.label_3.setText(_translate("Form", "Iron:"))
        self.label_4.setText(_translate("Form", "Wheat:"))
        self.label.setText(_translate("Form", "Hitsugaya"))
        self.pushButton.setText(_translate("Form", "Magic Button"))
        self.label_5.setText(_translate("Form", "Total: "))
        self.lineEdit_5.setText(_translate("Form", "0"))
        self.comboBox.setItemText(0, _translate("Form", "Romans"))
        self.comboBox.setItemText(1, _translate("Form", "Gauls"))
        self.comboBox.setItemText(2, _translate("Form", "Teutons"))
        self.label_6.setText(_translate("Form", "Tribe:"))
        self.label_7.setText(_translate("Form", "Unit:"))


        self.pushButton.clicked.connect(self.klik)

        Romans = ["Leggionaire", "Praetorian", "Imperian", "Equites Legati", "Equites Imperatoris",
         "Equites Caesaris", "Battering Ram", "Fire Catapult", "Senator", "Settler"]

        Gauls = ["Phalanx", "Swordsman", "Pathfinder", "Theutates Thunder", "Druidrider", "Haeduan",
         "Ram", "Trebuchet", "Chieftain", "Settler"]

        Teutons = ["Clubswinger", "Spearman", "Axeman", "Scout", "Paladin", "Teutonic Knight", "Ram",
         "Catapult", "Chief", "Settler"]


    def klik(self):
        textbox1 = self.lineEdit_1.text()
        textbox2 = self.lineEdit_2.text()
        textbox3 = self.lineEdit_3.text()
        textbox4 = self.lineEdit_4.text()
        self.lineEdit_5.setText(str(int(textbox1) + int(textbox2) + int(textbox3) + int(textbox4)))




if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    Form = QtWidgets.QWidget()
    ui = Ui_Form()
    ui.setupUi(Form)
    Form.show()
    sys.exit(app.exec_())
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Alfalfa
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Posts: 164
Threads: 22
Joined: Feb 2017
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#2
May-21-2019, 05:31 PM (This post was last modified: May-21-2019, 05:32 PM by Alfalfa.) 
#!/usr/bin/python3
import sys
from PyQt5 import QtCore, QtGui, QtWidgets

class Main(QtWidgets.QMainWindow):
    def __init__(self, parent):
        super().__init__()
        self.ui = QtWidgets.QWidget(self)
        self.setCentralWidget(self.ui)
        self.ui.combo1 = QtWidgets.QComboBox()
        self.ui.combo2 = QtWidgets.QComboBox()

        self.ui.combo1.currentTextChanged.connect(self._updateCombo2)
        self.ui.combo1.addItems(("A", "B", "C"))

        self.ui.layout = QtWidgets.QVBoxLayout()
        self.ui.layout.addWidget(self.ui.combo1)
        self.ui.layout.addWidget(self.ui.combo2)
        self.ui.setLayout(self.ui.layout)
        self.show()

    def _updateCombo2(self, text):
        self.ui.combo2.clear()
        if text == "A":
            self.ui.combo2.addItems(("1", "2", "3"))
        elif text == "B":
            self.ui.combo2.addItems(("4", "5", "6"))
        elif text == "C":
            self.ui.combo2.addItems(("7", "8", "9"))

if __name__== '__main__':
    app = QtWidgets.QApplication([])
    gui = Main(app)
    sys.exit(app.exec_())
PyQt5 Examples
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Hitsugaya
Unladen Swallow
Posts: 2
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Joined: May 2019
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#3
May-23-2019, 05:09 PM
it worked great,i implemented your example.
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Alfalfa
Splitter
Posts: 164
Threads: 22
Joined: Feb 2017
Reputation: 12
#4
May-23-2019, 06:05 PM
I'm glad it helped :)

In the future, it is a good habit to refer to the Qt documentation. There you can find all the information you need about the methods and signals that are available for the widget you are working with.

In this case: https://doc.qt.io/qt-5/qcombobox.html#signals
PyQt5 Examples
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