如何将小部件（例如 QPushButton）动态添加到设计器内置的布局中
我正在尝试 Qt，主要是想为 symbian 重写一个旧的 java 应用程序，但我自己有点困惑。
我首先要说明的是，C++不是我的功夫，这可能就是问题的根源。
我想做的是将一个简单的 QPushButton 添加到主窗口中的垂直布局，该窗口已在运行时在 qt 设计器中构建。
我的示例代码是这样的...
QPushButton button = new QPushButton();
QString text("Testing Buttons");
button.setText(text);
//How do we add children to this widget??
ui->myLayout->addWidget(button);
我收到的错误如下...
/home/graham/myFirstApp/mainwindow.cpp:22： 错误：从“QPushButton*”转换 到非标量类型“QPushButton” 已请求
/home/graham/myFirstApp/mainwindow.cpp:27： 错误：没有匹配的调用函数 到 'QVBoxLayout::addWidget(QPushButton&)'
/home/graham/myFirstApp/../qtsdk-2010.05/qt/include/QtGui/qboxlayout.h:85：候选者是：void QBoxLayout::addWidget(QWidget*, int, Qt::对齐）
现在我知道第一个错误与指针有关，但我不知道是什么，如果有人能够消除我的困惑并提供示例代码，那就太好了。
问候
格雷厄姆。
I'm having a play around with Qt mainly looking to rewrite an old java app for symbian and I have got my self a bit confused.
I should first of all explain that C++ is not my kung-fu, and that may be the cause of the problem.
What I am trying to do is add a simple QPushButton to a Vertical Layout in a main window which has been built in qt designer at run time.
My example code is something like this...
QPushButton button = new QPushButton();
QString text("Testing Buttons");
button.setText(text);
//How do we add children to this widget??
ui->myLayout->addWidget(button);
The errors I am getting are as follows...
/home/graham/myFirstApp/mainwindow.cpp:22:
error: conversion from ‘QPushButton*’
to non-scalar type ‘QPushButton’
requested/home/graham/myFirstApp/mainwindow.cpp:27:
error: no matching function for call
to
‘QVBoxLayout::addWidget(QPushButton&)’/home/graham/myFirstApp/../qtsdk-2010.05/qt/include/QtGui/qboxlayout.h:85: candidates are: void
QBoxLayout::addWidget(QWidget*, int,
Qt::Alignment)
Now I know the first error has something to do with pointers but I don't know what, if anyone is able to clear up my confusion and provide example code that would be great.
Regards
Graham.
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这只是一个C++问题，当您使用new-operator时，您需要使用星号将按钮声明为指针。
This is a merely C++ problem, you need to use asterisk to declare the button as pointer when you use new-operator.