QPushButton *btn = new QPushButton;
const QMetaObject *metaobject = btn->metaObject();
int count = metaobject->propertyCount();
for (int i = 0; i < count; ++i) {QMetaProperty metaproperty = metaobject->property(i);const char *name = metaproperty.name();QVariant value = btn->property(name);qDebug() << name << value;
}

objectName QVariant(QString, "")
modal QVariant(bool, false)
windowModality QVariant(int, 0)
enabled QVariant(bool, true)
geometry QVariant(QRect, QRect(0,0 640x480))
frameGeometry QVariant(QRect, QRect(0,0 639x479))
normalGeometry QVariant(QRect, QRect(0,0 0x0))
省略后面很多…

QPushButton *btn = new QPushButton;
const QMetaObject *metaobject = btn->metaObject();
int count = metaobject->propertyCount();
int index = metaobject->propertyOffset();
for (int i = index; i < count; ++i) {QMetaProperty metaproperty = metaobject->property(i);const char *name = metaproperty.name();QVariant value = btn->property(name);qDebug() << name << value;
}

autoDefault QVariant(bool, false)
default QVariant(bool, false)
flat QVariant(bool, false)

void frmMain::openPlugin(const QString &fileName)
{qDeleteAll(listWidgets);listWidgets.clear();listNames.clear();ui->listWidget->clear();//加载自定义控件插件集合信息,包括获得类名+图标QPluginLoader loader(fileName);if (loader.load()) {QObject *plugin = loader.instance();//获取插件容器,然后逐个遍历容器找出单个插件QDesignerCustomWidgetCollectionInterface *interfaces = qobject_cast<QDesignerCustomWidgetCollectionInterface *>(plugin);if (interfaces)  {listWidgets = interfaces->customWidgets();int count = listWidgets.count();for (int i = 0; i < count; i++) {QIcon icon = listWidgets.at(i)->icon();QString className = listWidgets.at(i)->name();QListWidgetItem *item = new QListWidgetItem(ui->listWidget);item->setText(className);item->setIcon(icon);listNames << className;}}//获取所有插件的类名const QObjectList objList = plugin->children();foreach (QObject *obj, objList) {QString className = obj->metaObject()->className();//qDebug() << className;}}
}

void frmMain::newWidget(int row, const QPoint &point)
{//列表按照同样的索引生成的,所以这里直接对该行的索引就行QWidget *widget = listWidgets.at(row)->createWidget(ui->centralwidget);widget->move(point);widget->resize(widget->sizeHint());//实例化选中窗体跟随控件一起newSelect(widget);//立即执行获取焦点以及设置属性widgetPressed(widget);
}

void frmMain::clearFocus()
{//将原有焦点窗体全部设置成无焦点foreach (SelectWidget *widget, selectWidgets) {widget->setDrawPoint(false);}
}
void frmMain::widgetPressed(QWidget *widget)
{//清空所有控件的焦点clearFocus();//设置当前按下的控件有焦点foreach (SelectWidget *w, selectWidgets) {if (w->getWidget() == widget) {w->setDrawPoint(true);break;}}//设置自动加载该控件的所有属性ui->objectController->setObject(widget);
}

void frmMain::openFile(const QString &fileName)
{//打开文件QFile file(fileName);if (!file.open(QFile::ReadOnly | QFile::Text)) {return;}//将文件填充到dom容器QDomDocument doc;if (!doc.setContent(&file)) {file.close();return;}file.close();//先清空原有控件QList<QWidget *> widgets = ui->centralwidget->findChildren<QWidget *>();qDeleteAll(widgets);widgets.clear();//先判断根元素是否正确QDomElement docElem = doc.documentElement();if (docElem.tagName() == "canvas") {QDomNode node = docElem.firstChild();QDomElement element = node.toElement();while(!node.isNull()) {QString name = element.tagName();//存储坐标+宽高int x, y, width, height;//存储其他自定义控件属性QList<QPair<QString, QVariant> > propertys;//节点名称不为空才继续if (!name.isEmpty()) {//遍历节点的属性名称和属性值QDomNamedNodeMap attrs = element.attributes();for (int i = 0; i < attrs.count(); i++) {QDomNode n = attrs.item(i);QString nodeName = n.nodeName();QString nodeValue = n.nodeValue();//qDebug() << nodeName << nodeValue;//优先取出坐标+宽高属性,这几个属性不能通过setProperty实现if (nodeName == "x") {x = nodeValue.toInt();} else if (nodeName == "y") {y = nodeValue.toInt();} else if (nodeName == "width") {width = nodeValue.toInt();} else if (nodeName == "height") {height = nodeValue.toInt();} else {propertys.append(qMakePair(nodeName, QVariant(nodeValue)));}}}//qDebug() << name << x << y << width << height;//根据不同的控件类型实例化控件int count = listWidgets.count();for (int i = 0; i < count; i++) {QString className = listWidgets.at(i)->name();if (name == className) {QWidget *widget = listWidgets.at(i)->createWidget(ui->centralwidget);//逐个设置自定义控件的属性int count = propertys.count();for (int i = 0; i < count; i++) {QPair<QString, QVariant> property = propertys.at(i);widget->setProperty(property.first.toLatin1().constData(), property.second);}//设置坐标+宽高widget->setGeometry(x, y, width, height);//实例化选中窗体跟随控件一起newSelect(widget);break;}}//移动到下一个节点node = node.nextSibling();element = node.toElement();}}
}

void frmMain::saveFile(const QString &fileName)
{QFile file(fileName);if (!file.open(QFile::WriteOnly | QFile::Text | QFile::Truncate)) {return;}//以流的形式输出文件QTextStream stream(&file);//构建xml数据QStringList list;//添加固定头部数据list << "<?xml version="1.0" encoding="UTF-8"?>";list << QString("<canvas width="%1" height="%2">").arg(ui->centralwidget->width()).arg(ui->centralwidget->height());//从容器中找到所有控件,根据控件的类名保存该类的所有属性QList<QWidget *> widgets = ui->centralwidget->findChildren<QWidget *>();foreach (QWidget *w, widgets) {const QMetaObject *metaObject = w->metaObject();QString className = metaObject->className();QStringList values;//如果当前控件的父类不是主窗体则无需导出,有些控件有子控件无需导出if (w->parent() != ui->centralwidget || className == "SelectWidget") {continue;}//metaObject->propertyOffset()表示当前控件的属性开始索引,0开始的是父类的属性int index = metaObject->propertyOffset();for (int i = index; i < metaObject->propertyCount(); i++) {QMetaProperty p = metaObject->property(i);QString nodeName = p.name();QVariant nodeValue = p.read(w);//枚举值要特殊处理,需要以字符串形式写入,不然存储到配置文件数据为intif (p.isEnumType()) {QMetaEnum enumValue = p.enumerator();nodeValue = enumValue.valueToKey(nodeValue.toInt());}QString temp = nodeValue.toString().toLocal8Bit().constData();values << QString("%1="%2"").arg(nodeName).arg(temp);//qDebug() << nodeName << nodeValue;}//逐个添加界面上的控件的属性QString str = QString("t<%1 x="%2" y="%3" width="%4" height="%5" %6/>").arg(className).arg(w->x()).arg(w->y()).arg(w->width()).arg(w->height()).arg(values.join(" "));list << str;
}
//添加固定尾部数据list << "</canvas>";//写入文件QString data = list.join("n");stream << data;file.close();
}