pyqt5 简单工具类

from PyQt5.QtWidgets import QPushButton, QLabel, QLineEdit,QTextEdit,QPlainTextEdit,QCheckBox
from PyQt5.QtWidgets import QComboBox,QRadioButton

class MYWIDGET():
    def __init__(self):
        pass

    def addButton(self, layout, button_name):
        button = QPushButton(button_name)
        layout.addWidget(button)
        return button
    def addRadioButton(self, layout,btngroup, button_name):
        button = QRadioButton(button_name)
        btngroup.addButton(button)
        layout.addWidget(button)
        return button
    def addLabel(self, layout, text):
        label = QLabel(text)
        layout.addWidget(label)
        return label
    def addStretch(self, layout):
        layout.addStretch()

    def addLineEdit(self, layout, place_holder_text='',text=''):
        line_edit = QLineEdit()        
        line_edit.setPlaceholderText(place_holder_text)
        layout.addWidget(line_edit)
        line_edit.setText(text)
        return line_edit
    def addLineEditD(self,win, layout, place_holder_text='',text=''):
        edit = DropLineEdit(win)
        edit.setPlaceholderText(place_holder_text)
        layout.addWidget(edit)
        edit.setText(text)
        return edit
    def addTextEdit(self, layout, place_holder_text='',text=''):
        edit = QTextEdit()

        edit.setPlaceholderText(place_holder_text)
        layout.addWidget(edit)
        edit.setText(text)
        return edit
    def addPlainTextEdit(self, layout, place_holder_text=''):
        edit = QPlainTextEdit()
        edit.setPlaceholderText(place_holder_text)
        layout.addWidget(edit)
        return edit
    def addCheckBox(self, layout, text=''):
        check = QCheckBox()
        check.setText(text)
        layout.addWidget(check)
        return check
    def addComboBox(self, layout, _list):
        comboBox = QComboBox()
        for item in _list:
            comboBox.addItem(item)
        layout.addWidget(comboBox)
        return comboBox


class DropLineEdit(QLineEdit):
    def __init__(self, parent=None):
        super(DropLineEdit, self).__init__(parent)
        self.setDragEnabled(True)
    def dragEnterEvent(self, e):
        if e.mimeData().hasText():
            e.accept()  #[只有接受之后，移动事件和释放事件才可以]
        else:
            e.ignore()

    def dropEvent(self, e):  #拖拽时鼠标释放事件
        if e.mimeData().hasText():
            path=e.mimeData().text()
            path = path.split('\n')
            path = path[0].split('///')  #去掉file:///
            self.setText(path[1].replace('/','\\'))   #把路径写入QLineEdit控件
        else:
            e.ignore()

MYWIDGET = MYWIDGET()