qcombobox

the following sample code is crashing with this error when I close the application: QBasicTimer::start: QBasicTimer can only be used with threads started with QThread here is my code : import sys from PyQt4 import QtGui ,QtCore app = QtGui.QApplication(sys.argv) data=[] data.append("one") model=QtGui.QStringListModel(data) combobox=QtGui.QComboBox() combobox.show() combobox.setModel(model) sys.exit(app.exec_()) I found out that's about using model but I don't know how to fix it. edited: os : win 7 64bit pyqt4 The program is not "crashing": it is merely printing an error message during the

I am trying to use rich text in a QComboBox but it does not support it. Perhaps I should write a subclass? But I am unsure on what I would need to override as I have never done anything like this before. Please help. Thanks! Mike Hordecki I think custom delegate class is the answer. The solution is to simply replace standard drawing routine with your own (using i.e. QLabel). There was a similar question here: QListView/QListWidget with custom items and custom item widgets 来源： https://stackoverflow.com/questions/2476581/qt-how-to-use-rich-text-in-a-qcombobox

I want to draw a QComboBox inside a delegate, which works fine except that I can't figure out how to draw the inital text that's visible inside the combo box. The documentation says that QStyleOptionComboBox.currentText holds: "the text for the current item of the combo box." but setting the variable does not have any effect. This is my code: void MyDelegate::paint(QPainter *painter, const QStyleOptionViewItem& option, const QModelIndex& index) const { QStyleOptionComboBox comboBoxOption; comboBoxOption.rect = option.rect; comboBoxOption.state = option.state; comboBoxOption.state |= QStyle:

I have a QComboBox that list all Windows' drive letters and let the user choose among them. During the execution, we need to enable or disable some of the letters (without removing them). Here is the basic code : all_letters = ["{}:".format(chr(i)) for i in range(90, 64, -1)] # Z: -> A: all_letters.insert(0, "") cb_letter = QtGui.QComboBox() for l in all_letters: cb_letter.addItem(l) cb_letter.setCurrentIndex(0) I could find a kind of solution (which sounds really complicated) for just disabling an entry here but no way to enable it back. What would be the best way to enable and disable any

I cannot figure out how to change the text color of one particular item of a QComboBox. I was able to change the Background color of an item: comboBox->setItemData(i, Qt::green, Qt::BackgroundRole); ( Qt::ForegroundRole had no effect at all, Qt 4.6, Ubuntu 10.04) and I was able to change the text color of all items with a stylesheet but I cannot figure out how to change the text color of one specified item. Thanks for your Help! Lefteris Banos It's almost like you propose, but you have to change the role to Qt::TextColorRole . comboBox->setItemData(0, QBrush(Qt::red), Qt::TextColorRole); I

I write program on python3 that will calculate thermodynamic properties. This is piece of GUI "Выбранное вещество" is a selected substance like 1-Butene, water, ammonia and etc. "Первый параметр" is a first parameter. User will choose parameters like pressure, temperature, density and etc, and unit of measurement like Pa, MPa, bar (if it's pressure) and etc. So I don't know one thing: i want that if user chose pressure('Давление (P)') in top combobox, depending on this, suitable units of measure were chosen in small combobox. What have i already done: create 2 files testGUI.py - there is all