有一种方法可以使组合的leandit-part看起来像（授权的）combobox-items？

Question

我想更改a的外观，包括物品和“ leandit-part”看起来不错/专业。

简单的部分：

组合框既可以用作搜索字段，又用于选择已经成功找到的符号。作为一个符号通常会提供几个结果，这些结果必须很容易被以组合框项目而彼此区分。 困难的部分/我失败的地方：

为了使结果/组合XiTems看起来不错，我决定使用QStyledIteMdelegate。这起作用了，但我尚未找到将这种外观转移到leandit部分的方法。 cobobox的行为将如下：

没有焦点/未单击：

QCombobox
• 看起来与所选的

  Combobox.LineEdit.光学上相同。
  

  当点击/具有焦点时：

Combobox-Item
• 看起来像一个/实现搜索字段的功能

  
  我假设它必须/可以使用customqcombobox完成。但是，我所有的尝试都遭受了巨大的失败。

  工作和代码段作为基础/实验：

  Combobox.LineEdit

  我想保持外观（
  LineEdit
互相写在上面）。 写

import sys
from PyQt5 import QtWidgets, QtCore, QtGui
import qdarkstyle
# from Custom_Widgets import CustomComboBox

class ComboBoxItemDelegate(QtWidgets.QStyledItemDelegate):
    #This delegate will make the Combobox Items look nice

    def paint(self, painter, option, index):
        primary = index.data(QtCore.Qt.DisplayRole)
        secondary = index.data(QtCore.Qt.UserRole)

        if secondary is None:
            secondary = ""

        # Highlight Background if you mouseover
        if option.state & QtWidgets.QStyle.State_Selected:
            painter.fillRect(option.rect, option.palette.highlight())
        else:
            painter.fillRect(option.rect, option.palette.base())
        
        # Make/Define the "Boxes" where primary and secondary will be written in 
        rect = option.rect.adjusted(5, 0, -5, 0)  
        primaryRect = QtCore.QRect(rect.left(), rect.top(), rect.width(), rect.height()//2)
        secondaryRect = QtCore.QRect(rect.left(), rect.top() + rect.height()//2, rect.width(), rect.height()//2)
        
        #Draw Primary
        primaryFont = option.font
        painter.setFont(primaryFont)
        painter.setPen(option.palette.text().color())
        painter.drawText(primaryRect, QtCore.Qt.AlignLeft | QtCore.Qt.AlignVCenter, primary)
        
        #Draw Secondary
        secondaryFont = QtGui.QFont(option.font)
        secondaryFont.setPointSize(option.font.pointSize() - 1)
        painter.setFont(secondaryFont)
        painter.setPen(QtGui.QColor("gray"))
        painter.drawText(secondaryRect, QtCore.Qt.AlignLeft | QtCore.Qt.AlignVCenter, secondary)

    def sizeHint(self, option, index):
        #Make it fit
        size = super().sizeHint(option, index)
        size.setHeight(int(size.height() * 1.6))
        return size


class MainWindow(QtWidgets.QMainWindow):
    def __init__(self):
        super().__init__()
        self.initUI()
        items = [{'additional_info':'HELLO', 'Item':'SYMBOL'},
                   {'additional_info':'WORLD', 'Item':'G.I. JOE'},
                   {'additional_info':'NOVABRAIN', 'Item':'FLATEARTH'},
                   {'additional_info':'SUPERSTAR', 'Item':'BOB THE BUILDER'}]
        for item in items:
            self.initial_filling(item['Item'], item['additional_info'])

    def initial_filling(self, primary, secondary):
        self.searchComboBox.addItem(primary)
        index = self.searchComboBox.model().index(self.searchComboBox.count()-1, 0)
        self.searchComboBox.model().setData(index, secondary, role=QtCore.Qt.UserRole)

    def initUI(self):
        self.setWindowTitle("My best Widget")
        self.resize(324, 500)
        central_widget = QtWidgets.QWidget()
        self.setCentralWidget(central_widget)
        layout = QtWidgets.QVBoxLayout(central_widget)

        # Creating the Combobox
        self.searchComboBox = QtWidgets.QComboBox()
        self.searchComboBox.setEditable(True)
        self.searchComboBox.setItemDelegate(ComboBoxItemDelegate(self.searchComboBox))
        self.searchComboBox.setInsertPolicy(QtWidgets.QComboBox.NoInsert)
        layout.addWidget(self.searchComboBox)

        #Usually triggers API. Just think of it as "make menu" function 
        self.searchComboBox.lineEdit().returnPressed.connect(self.on_search_return)
        #Updating LineEdit but ugly version
        self.searchComboBox.currentIndexChanged.connect(self.updateComboBoxLineEdit)

        # !(not relevant)! Dummy Table !(not relevant)!
        self.table = QtWidgets.QTableWidget()
        self.table.setColumnCount(3)
        self.table.setHorizontalHeaderLabels(["Some", "Nice", "Table"])
        self.setWindowFlag(QtCore.Qt.WindowStaysOnTopHint)
        self.table.verticalHeader().setVisible(False)
        self.table.setShowGrid(False)
        layout.addWidget(self.table)

    def on_search_return(self):
        #PREPARE INPUT FOR API CALL AND GETTING RESULT
        symbol = self.searchComboBox.currentText().strip().upper()
        if not symbol:
            return

        #.... RESULTS FROM API
        
        results = [{'additional_info':'HELLO', 'Item':symbol},
                   {'additional_info':'WORLD', 'Item':symbol},
                   {'additional_info':'GALAXY', 'Item':symbol},
                   {'additional_info':'STAR', 'Item':symbol}]
        self.show_lookup_menu(results)


    def show_lookup_menu(self, results):
        #Creating Menu based on results
        menu = QtWidgets.QMenu(self)
        for result in results:
            text = f"{result['additional_info']} - {result['Item']}"
            action = QtWidgets.QAction(text, menu)
            action.setData(result)
            menu.addAction(action)
        menu.triggered.connect(self.on_menu_action_triggered)
        pos = self.searchComboBox.mapToGlobal(QtCore.QPoint(0, self.searchComboBox.height()))
        menu.exec_(pos)


    def on_menu_action_triggered(self, action):
        result = action.data()
        if result:
            print("You chose: ", result)
            primary = result["Item"]
            secondary = result["additional_info"]
            if self.searchComboBox.findText(primary) == -1:
                self.searchComboBox.addItem(primary)
                index = self.searchComboBox.model().index(self.searchComboBox.count()-1, 0)
                self.searchComboBox.model().setData(index, secondary, role=QtCore.Qt.UserRole)


    def updateComboBoxLineEdit(self, index):
        #Sadly LineEdit-Part of Combobox has no Delegate...
        if index >= 0:
            primary = self.searchComboBox.itemText(index)
            secondary = self.searchComboBox.itemData(index, role=QtCore.Qt.UserRole)
            if secondary:
                combined = f"{primary} {secondary}"
            else:
                combined = primary
            self.searchComboBox.lineEdit().setText(combined)


def main():
    qt_app = QtWidgets.QApplication(sys.argv)
    qt_app.setStyleSheet(qdarkstyle.load_stylesheet_pyqt5())

    window = MainWindow()
    window.show()

    sys.exit(qt_app.exec_())

if __name__ == "__main__":
    main()

和一个又一个又一个。 对我来说，次要是灰色，一个级别较小（以便很容易区分

primary/secondary

）才是很重要的

我通过嵌套两个customwidget。 首先，我创建了一个自定义QlineEdit，并覆盖了“小部件没有焦点”的油漆。

NEXT，必须创建自定义的Qcombobox。在此中，每个组合的构建列被刚创建的CustomLineDIT覆盖。

最终，您应该覆盖CustomQcombobox的SizeHint方法，以便有足够的空间进行两行显示。

primaryASDF