使用 QTextCursor、QTextEdit 选择 textEdit 对象的文本 [英] Select text of textEdit object with QTextCursor, QTextEdit

问题描述

我有一个 textEdit 字段，我想处理该字段中的一些选定文本(但不是它的格式).

I have a textEdit field and I want to process some selected text within this field (but not the format of it).

到目前为止，我将按钮连接到:

So far, I connect the button with:

QtCore.QObject.connect(self.ui.mytext_button,QtCore.SIGNAL("clicked()"), self.mytext)

QtCore.QObject.connect(self.ui.mytext_button,QtCore.SIGNAL("clicked()"), self.mytext)

方法:

def mytext(s):
     return s.upper()

但是我如何告诉 Python s 是选定的文本?我知道这与 selectionStart()、selectionEnd() 有关.以及如何将其更改为 mytext 返回的内容?我认为是 insertText() 的东西，但在这里我也迷失了细节.

But how do I tell Python that s is the selected text? I know that is something with selectionStart(), selectionEnd(). And how to change it to what mytext returns? I think is something with insertText(), but here I am also lost at the details.

推荐答案

回答我自己的问题.在这里发布给 Python 新手:

Answering my own question. Posting here for fellow Python noobs:

获取选中的文本:

cursor = self.ui.editor_window.textCursor()
textSelected = cursor.selectedText()

将文本插入回编辑器.

self.ui.editor_window.append(s) 

也有 append() 的替代方法，用于将文本插入到原始文本中.
因此，要将选定的文本变为大写:

There are also alternatives to append(), for inserting the text into the original text.
So, to put a selected text into uppercase:

def mytext(self):
        cursor = self.ui.editor_window.textCursor()
        textSelected = cursor.selectedText()
        s = textSelected.upper()
        self.ui.editor_window.append(s)  

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