C++ 从 QLineEdit 获取值
声明:本页面是StackOverFlow热门问题的中英对照翻译,遵循CC BY-SA 4.0协议,如果您需要使用它,必须同样遵循CC BY-SA许可,注明原文地址和作者信息,同时你必须将它归于原作者(不是我):StackOverFlow
原文地址: http://stackoverflow.com/questions/12161082/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
提示:将鼠标放在中文语句上可以显示对应的英文。显示中英文
时间:2020-08-27 15:57:20 来源:igfitidea点击:
Get the value from a QLineEdit
提问by SamuelNLP
I have a QLineEdit
that only allows numbers and I want to get the current value from it. I can't figure out how.
我有一个QLineEdit
只允许数字,我想从中获取当前值。我无法弄清楚如何。
ui->lineEdit->setValidator(new QIntValidator(this));
回答by SamuelNLP
I figured it out:
我想到了:
QString XMAX=ui->lineEdit->text();
xMax=XMAX.toDouble();
回答by g24l
Or
或者
std::stod(ui->lineEdit->text().toStdString());
but watch out for the encoding.
但要注意编码。
回答by Samuel Ives
Try this:
尝试这个:
ui->leNome->displayText()