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POPopulating a table in Qt
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I'm trying to improve <a href="http://www.informit.com/articles/article.aspx?p=1405545&seqNum=4" rel="nofollow">this</a> example for a diagram editor. The example uses a nodes class with a few attributes unrelated to my needs. Right now I want to add a "list of arrays" to this node class in order to then populate a QTableView in the "properties" dialog. I already designed the properties dialog with the QTableView. I'm not even sure this is feasible/makes sense. Basically the table must have 4 columns: name, type, value and unit. Each row of the table is a certain "property" I need the node to have. My question is: how can/should I model the table at class level? I ask this because I have been looking to QList, QVariant, QMap, QMultiMap and I can't figure out out to use them correctly, and none of the examples I found so far are any help either, at least for what I need to do. I saw something about the <a href="http://harmattan-dev.nokia.com/docs/library/html/qt4/qstandarditemmodel.html" rel="nofollow">QStandardItemModel</a> class, and I think it relates to the solution, but I can't understand how/why. To top it off, I'm a Qt/C++ beginner, so much of the dynamics and jargon in Qt/C++ are still elluding me. If anyone could give me some pointers, that would be great. EDIT: This isn't getting much attention, and I don't know if its because I wasn't clear enough, but anyway, try to picture this: <ul> <li>a Node has a PropertyList</li> <li>that PropertyList lists Properties</li> <li>Properties are sort of dictionaries, as they have always 4 attributes and respective values: name:(string), type:(string), value:(double) and unit:(string).</li> <li>one Node can only have one PropertyList; a PropertyList can have several Properties. Some Nodes will have 3 properties, others will have 4, etc...</li> </ul> Now, the Nodes are represented in a diagram via a QGraphicsScene with QGraphicsItem. You can access a PropertiesDialog widget that has a QTableWidget in it. This table will show the PropertyList. I want to know what kind of "structure" I can create/define that enables me to easily insert/read data in the table widget - ie, I load the data into the PropertiesList of the Node and it shows up in the table widget; if I change the data in the table widget, it passes on to the PropertiesList of the Node. Hope this helps clearing out any doubts that may arise.
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<c++><qt><qtablewidget><qtablewidgetitem>
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Populating a table in Qt
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1. PO
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1. COThe PropertyWidget should only contain property data of a selected Node. Thus, when you select a Node, pass that node to the PropertyWidget and let the PropertyWidget extract the PropertyList to populate its own data models used for editing. When a property value is changed, get the PropertyWidget tell the Node what the new values are and the Node can, in turn, modify the QGraphicsItem if necessary.
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2. CO@RobbieE that is already being done. The properties dialog is only affecting the node it is supposed to. How should I define the data-members for the _Node_ class and how to I pass those members values to the table widget in the properties dialog?
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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.