qtablewidget

I work eith pyqt4 in python3.4 I want to validate if the text in the cell is a float number when it is introduced. How I do that? You have two options. You can create a QItemDelegate and override the createEditor , setEditorData and setModelData to control the widget they're presented with to edit the data. You can create a QLineEdit with a validator if you'd like, but if they can only enter a number, you should probably just use a QSpinBox or QDoubleSpinBox , which only allow integers and floats. Alternatively, you could let them enter whatever they want and then in the setModelData function

I am trying to make certain cells in my QTableWidget have different colored borders based on the information contained in an item(cell). I do not want to select those cells and use the selection-color styles because different cells need to be selected/highlighted. for ex. I have a table with 3 columns and 3 rows. All the cells have simple text in each of them. [] [Name] [Value] [Units] [1] [one] [1] [cm] [2] [two] [2] [in] [3] [three][3] [m] The 1st row is selected by the user and is highlighted, a process in the background updates the values in the table and updates the value in the 3rd row

Why with the following code I just get an empty table widget? QString imgPath = "C:\\path\\to\\image.jpg"; QImage *img = new QImage(imgPath); QTableWidget *thumbnailsWidget = new QTableWidget; QTableWidgetItem *thumbnail = new QTableWidgetItem; thumbnail->setData(Qt::DecorationRole, QPixmap::fromImage(*img)); thumbnailsWidget->setColumnCount(5); thumbnailsWidget->setRowCount(3); thumbnailsWidget->setItem(0, 0, thumbnail); setCentralWidget(thumbnailsWidget); How can I put an image into a QTableWidgetItem? Thank you. P.S.: I noticed that the table is not really empty. Clicking on the different

I'm still learning Qt and I am indebted to the SO community for providing me with great, very timely answers to my Qt questions. Thank you. I'm quite confused on the idea of adding a header to a QTableWidget . What I'd like to do is have a table that contains information about team members. Each row for a member should contain his first and last name, each in its own cell, an email address in one cell, and office in the other cell. I'd to have a header above these columns to name them as appropriate. I'm trying to start off easy and get just the header to display "Last" (as in last name). Here

I know you can set the alignment for each item using: TableWidget->item(0,0)->setTextAlignment(Qt::AlignLeft); However I would like to set a default alignment for all the cells in order to do not have to set it every time I create a new item. Is it possible? Yes it is possible. But you need to understand you are not modifying a property of the table widget, but a property of the table widget item. First create your own item, and set it up as you want QTableWidgetItem * protoitem = new QTableWidgetItem(); protoitem->setTextAlignment(Qt::AlignLeft); etc... Then each time you want to create a new