Q: QTextCursor 如何使用？
前提条件：获得指针对象
textCursor = self.textEdit.textCursor()
-
获取指定区间的文本（相对于整篇文档）
<pre class="hljs lsl" style="box-sizing: border-box; overflow: auto; font-family: "Source Code Pro", Consolas, Menlo, Monaco, "Courier New", monospace; font-size: 0.93em; padding: 1em; margin-bottom: 1.5em; line-height: 1.45; word-break: break-all; background: url("../img/blueprint.png") 0% 0% / 30px, 0% 0% / 30px rgb(246, 246, 246); border: none; border-radius: 4px; max-height: 35em; position: relative; margin-top: 0px !important;">textCursor.setPosition(3, QTextCursor.MoveAnchor) textCursor.setPosition(9, QTextCursor.KeepAnchor) lineContent = textCursor.selectedText()
str = '0123456789'
3-9之间的字符为 345678
-
获取光标所在行的文本
<pre class="hljs abnf" style="box-sizing: border-box; overflow: auto; font-family: "Source Code Pro", Consolas, Menlo, Monaco, "Courier New", monospace; font-size: 0.93em; padding: 1em; margin-bottom: 1.5em; line-height: 1.45; word-break: break-all; background: url("../img/blueprint.png") 0% 0% / 30px, 0% 0% / 30px rgb(246, 246, 246); border: none; border-radius: 4px; max-height: 35em; position: relative; margin-top: 0px !important;">textCursor.select(QTextCursor.LineUnderCursor) lineContent = textCursor.selectedText() -
获取光标所在行的文本的前5个字符
<pre class="hljs arduino" style="box-sizing: border-box; overflow: auto; font-family: "Source Code Pro", Consolas, Menlo, Monaco, "Courier New", monospace; font-size: 0.93em; padding: 1em; margin-bottom: 1.5em; line-height: 1.45; word-break: break-all; background: url("../img/blueprint.png") 0% 0% / 30px, 0% 0% / 30px rgb(246, 246, 246); border: none; border-radius: 4px; max-height: 35em; position: relative; margin-top: 0px !important;">textCursor.movePosition(QTextCursor.StartOfLine) end = textCursor.position() + 5 textCursor.setPosition(end, QTextCursor.KeepAnchor)