C++ 将 QLabel 添加到 QWidget
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Adding a QLabel to a QWidget
提问by Sadaab
I am new to Qt and C++ and working on an application and I am trying to add QLabelin a QWidget, using QHBoxLayout.
I am setting the text of label to something but it is not visible in the Label.
我是新来的Qt和C ++中的应用程序工作，我想补充QLabel一个QWidget，使用QHBoxLayout。我正在将标签文本设置为某些内容，但它在标签中不可见。
Here is the piece of the code:
这是代码的一部分：
setStyleSheet( "QWidget{ background-color : rgba( 160, 160, 160, 255); border-radius : 7px; }" );
QLabel *label = new QLabel(this);
QHBoxLayout *layout = new QHBoxLayout();
label->setText("Random String");
layout->addWidget(label);
setLayout(layout);
The styleSheet is for the Widget in which QLabel is added.
styleSheet 用于添加 QLabel 的 Widget。
The string "Random String"doesn't get displayed inside the label.
字符串"Random String"不会显示在标签内。
Please help.
请帮忙。
回答by Iuliu
Your code has a typo, it's QLabel, notQLable...
你的代码有一个错字，它是QLabel，不是QLable......
Assuming that this would notify you at compile time I don't see what is the problem with the code, maybe you could share more of your project with us...
假设这会在编译时通知您，我看不出代码有什么问题，也许您可以与我们分享更多您的项目...
I did a small test of this class:
我对这门课做了一个小测试：
mynewwidget.h
mynewwidget.h
#ifndef MYNEWWIDGET_H
#define MYNEWWIDGET_H
#include <QWidget>
class MyNewWidget : public QWidget
{
Q_OBJECT
public:
explicit MyNewWidget(QWidget *parent = 0);
};
#endif // MYNEWWIDGET_H
mynewwidget.cpp
mynewwidget.cpp
#include "mynewwidget.h"
#include <QHBoxLayout>
#include <QLabel>
MyNewWidget::MyNewWidget(QWidget *parent) :
QWidget(parent)
{
setStyleSheet( "QWidget{ background-color : rgba( 160, 160, 160, 255); border-radius : 7px; }" );
QLabel *label = new QLabel(this);
QHBoxLayout *layout = new QHBoxLayout();
label->setText("Random String");
layout->addWidget(label);
setLayout(layout);
}
And the result is
结果是
which I assume it's what you want...
我认为这是你想要的......
