(PyQt) 如何重置整个 QTextEdit 的 CharFormat？

Question

我在我的 QTextEdit 中对几个单词使用 mergeCharFormat，以突出显示它们。像这样：

import sys
from PyQt4 import QtGui, uic
from PyQt4.QtCore import *

def drawGUI():
    app = QtGui.QApplication(sys.argv)
    w = QtGui.QWidget()
    w.setGeometry(200, 200, 200, 50)
    editBox = QtGui.QTextEdit(w)
    text = 'Hello stack overflow, this is a test and tish is a misspelled word'
    editBox.setText(text)

    """ Now there'd be a function that finds misspelled words """

    # Highlight misspelled words
    misspelledWord = 'tish'
    cursor = editBox.textCursor()
    format_ = QtGui.QTextCharFormat()
    format_.setBackground(QtGui.QBrush(QtGui.QColor("pink")))
    pattern = "\b" + misspelledWord + "\b"
    regex = QRegExp(pattern)
    index = regex.indexIn(editBox.toPlainText(), 0)
    cursor.setPosition(index)
    cursor.movePosition(QtGui.QTextCursor.EndOfWord, 1)
    cursor.mergeCharFormat(format_)

    w.showFullScreen()
    sys.exit(app.exec_())

if __name__ == '__main__':
    drawGUI()

因此，此突出显示功能完全符合预期。但是，我找不到清除文本区域高亮显示的好方法。做这种事情的好方法是什么——本质上只是将整个 QTextEdit 的字符格式设置回默认值？

到目前为止我已经尝试过再次获取光标，并将其格式设置为具有清晰背景的新格式，然后将光标放在整个选择上并使用 QTextCursor.setCharFormat()，但是这似乎什么都不做。

Answer 1

对整个文档应用新的 QTextCharFormat 适合我：

def drawGUI():
    ...
    cursor.mergeCharFormat(format_)

    def clear():
        cursor = editBox.textCursor()
        cursor.select(QtGui.QTextCursor.Document)
        cursor.setCharFormat(QtGui.QTextCharFormat())
        cursor.clearSelection()
        editBox.setTextCursor(cursor)

    button = QtGui.QPushButton('Clear')
    button.clicked.connect(clear)

    layout = QtGui.QVBoxLayout(w)
    layout.addWidget(editBox)
    layout.addWidget(button)

(PyQt) 如何重置整个 QTextEdit 的 CharFormat？

(PyQt) How can I reset the CharFormat of an entire QTextEdit?

python

formatting

pyqt

qtextedit

python-2.7