model-view

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Updating a record in QSqlTableModel

I am trying to update a record and i have this: tableModel->select(); QModelIndex index = ui.tableView->currentIndex();[详细]

2023-04-04 09:10 分类：问答
Qt: viewing data from tables with foreign key columns pointing to multiple other tables

I have a table Thingsies, with columns id, data1, otherTableId, otherTableRowId. I need the last 开发者_JAVA百科two columns instead of just a foreign key column because depending on the Thingy the typ[详细]

2023-03-24 13:53 分类：问答
What are criticisms against using "display_order" fields in your database design? [closed]

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.[详细]

2023-03-12 16:22 分类：问答
Cameras and Modelview in OpenGL ES (WebGL)

I\'m having a little trouble with my OpenGL transformations -- I have a vertex shader that se开发者_StackOverflowts gl_Position to projection * view * model * vertex. I have code that generates a view[详细]

2023-03-09 04:14 分类：问答
PyQt model/view: which type of model for programmatic changes?

I recently started rewriting an application and I\'m trying to port it to model/view to reduce the number of kludges I have there.[详细]

2023-03-04 12:12 分类：问答
Qt subclassed QStyledItemDelegate paint method is never called

Update: my paint method was not const I have a custom QTableView connected to a QAbstractTableModel. I recently created a QStyledItemDelegate subclass and its paint method prints a debugging message[详细]

2023-03-02 14:08 分类：问答
How can I link a ListView to ModelView?

I want to create a ListView with the names and the codes of the products in my ModelView but when I do:[详细]

2023-02-22 03:34 分类：问答
Derive euler rotation from model view matrix

I\'m implementing a widget tool kit wich requires some symbols to be aligned with the Y axis. These symbols are drawn using the model view matrix of the parent objects, causing them to be rotated as[详细]

2023-02-20 19:06 分类：问答
Removing rows from QAbstractTableModel derived class don't work, why?

I have a Qt application for which I derived my own model class from QAbstractTableModel.I have implemented the necessary methods as prescribed in the documentation.When I call removeRows method the开发[详细]

2023-02-19 19:32 分类：问答
Jquery simple model view problem

I am trying to make little photo gallery with help of model view. But when I click on photo model views opens and shows photo but also it deletes it from photo gallery.I used append to create on model[详细]

2023-01-16 11:44 分类：问答