从QML访问QStandardItemModel的项 [英] Access items of QStandardItemModel from QML

问题描述

（EDITED）在原始问题我错误地假设GridView本机使用2维模型。实际上，它需要一个列表的元素类似于其他QML
视图。为了使问题和答案更容易理解，我改变了给定代码
。

在主程序中，我定义了一个QStandardItemModel的实例：

  QScopedPointer< QApplication> app（createApplication（argc，argv））; 
 QmlApplicationViewer viewer; 
 
 QStandardItemModel * cppmodel = new QStandardItemModel（）; 
 for（int i = 0; i <100; i ++）{
 QStandardItem * item = new QStandardItem（QString（％1）。arg（i，2,10，QChar（'0' ）））; 
 cppmodel-> appendRow（item）;然后，我使用以下命令将模型注册到QML：
 
 
 $ b 
 $ b 
  viewer.rootContext（） - > setContextProperty（cppModel，cppmodel）; 
  
 QStandardItemModel是一个表，不是吗？然后，我如何写一个委托给
在一个简单的GridView中显示项目：
  GridView {
 model：cppModel 
 delegate：Rectangle {
 Text {text：？ } //这里必须使用什么？ 
} 
} 
  
我必须使用命名角色吗？ 
 
 
 
解决方案
也许它可以帮助你：
 
 在QML中使用QStandardItemModel  
 
 
 
也可以尝试这样的代码：
  GridView {
 anchors.fill：parent 
 model：cppModel 
 delegate：Rectangle {
 Text {
 text：display; 
} 
} 
} 
  
 
(EDITED) In original question I erroneously assumed that GridView natively use 2-dimensional model. Indeed, it takes a list of elements similarly as other QML
views. To make the question and answers more understandable I changed given code
slightly. Moreover, I added working soluton based on answers.

In main program I define an instance of QStandardItemModel:
QScopedPointer<QApplication> app(createApplication(argc, argv));
QmlApplicationViewer viewer;

QStandardItemModel* cppmodel = new QStandardItemModel();
for (int i=0; i<100; i++) {
    QStandardItem* item = new QStandardItem(QString("%1").arg(i,2,10,QChar('0')));
    cppmodel->appendRow(item);
}
Then, I register the model to QML with:
viewer.rootContext()->setContextProperty("cppModel",cppmodel);
QStandardItemModel is a table,isn't it? Then, how can I write a delegate to
show items in a simple GridView:
    GridView {
        model: cppModel
        delegate: Rectangle {
            Text { text: ??? } //WHAT MUST BE USED HERE ???
        }
    }
Do I have to use named roles or can I just use properly created indices?
解决方案
Maybe It helps you:

Using QStandardItemModel in QML

Also you can try such code:
GridView {
   anchors.fill: parent
   model: cppModel
   delegate: Rectangle {
      Text {
         text: display;
      }
   }
}


                        
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