如何实时更新 QTextEdit [英] How to update a QTextEdit in real-time

问题描述

我有一个带有 QtextEdit 的 UI，
(1) 我想更新 QtextEdit 并且主 UI 可以实时显示并且不会卡住.使用 sleep 时，无法按我的意愿工作.(2)我想制作一个函数并传递参数给它，QtestEdit可以实时更新显示

i have one UI with QtextEdit,
(1) i want to update QtextEdit and main UI can display realtime and no stuck. when use sleep ,not work as i want. (2) i want have make one function and pass parameter to it, and the QtestEdit can update display real time

self.pButton_torun.clicked.connect(self.mytodo)

 def mytodo(self):
        self.progress_textEdit.append(u"==== 20 % first step finish")
        #after 2 sec
        self.progress_textEdit.append(u"==== 40 % second step finish")
        #after 2 sec
        self.progress_textEdit.append(u"==== 60 % third step finish")
        #after 2 sec
        self.progress_textEdit.append(u"==== 80 % forth step finish")

推荐答案

尝试使用 processEvents():

def mytodo(self):
    self.progress_textEdit.append(u"==== 20 % first step finish")
    QApplication.processEvents()
    # etc...

虽然这是一种解决方法，但您可能还想考虑使用单独的线程.

This is a bit of a workaround though, down the track you might also want to consider using separate threads.

这篇关于如何实时更新 QTextEdit的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！