Language Bindings

If you want make application with drag-and-drop, operating with DB, scripting to operate with widgets on the forms, store and load widgets in UI files, change forms without recompile of the project, take a look at QtRptDocumentDemo

What's weird is I tried the same code again today, but I'm getting the sender this time. Something is not right with how PySide passes the sender, but I can tell this is one of those bugs that will be really hard to track down since it's really inconsistent. Here's a simplified version of what I'm working with:

import sys from PySide.QtCore import * from PySide.QtGui import * class CustomDialog(QDialog): def __init__(self, parent=None): super(CustomDialog, self).__init__(parent) self.setLayout(QVBoxLayout()) self.table = QTableWidget() self.table.setColumnCount(2) self.layout().addWidget(self.table) self.table.setRowCount(10) for row in xrange(self.table.rowCount()): item = QTableWidgetItem(str(row)) self.table.setItem(row, 0, item) combo = QComboBox() combo.addItems(['one', 'two', 'three']) combo.currentIndexChanged.connect(self.onIndexChanged) self.table.setCellWidget(row, 1, combo) @Slot(int) def onIndexChanged(self, index): print self.sender() def main(): app = QApplication(sys.argv) dialog = CustomDialog() dialog.show() app.exec_() if __name__ == '__main__': main()

If you don't get the bug, I wouldn't spend too much time looking into it, but I appreciate the help.

Bump it on new forums... oh yeh

Is it really numpy.dot or could it also be numpy.zeros?

I am allocating a huge 3d matrix via numpy.zeros and I seem to have a deadlock in some cases there too.

How is it explained that the code works under Linux?
With the same code I can write pdf and zip.
Thanks for your patience!

Hi and welcome to devnet,

You should rather contact the River Bank Computing team since PyQt is their product

And think I got him! Is something like this:

@def moveCard(self, card, targetPoint, timeLine = 5000, rotation = 0):

"""Move the card from one position to one other.""" cardTimer=QtCore.QTimeLine(timeLine) cardAnimation=QtGui.QGraphicsItemAnimation(self) cardAnimation.setItem(card) cardAnimation.setTimeLine(cardTimer) cardAnimation.setPosAt(1, targetPoint) cardAnimation.setRotationAt(1, rotation) cardTimer.start()@

... improve speed with svg card items?

Edited:
I've noted improved speed adding @card.setCacheMode(QtGui.QGraphicsItem.NoCache)@

I've found something that helps this program to look better. It isn't perfectly what I wanted but It will work for now. This textedit at the bottom of my program can't be under left tablewidget. Here is picture how it looks like now:

!http://i.stack.imgur.com/XslZf.jpg(My program)!

But still I don't know why this is happening? And why I can't see that in qtdesigner preview.

Many Thanks, I've solved putting them in the init part of the class so they are translated properly and refer to these messages in a derived QMessageBox, some QmessageBox fails About seems to work but Question (i didn't remember well fails to translate properly the messages).

@ self.toolcyl = self.tr("Cylindrical") self.toolsph = self.tr("Spherical (Ball)") self.tooltor = self.tr("Toroidal (Bull)") self.toolcon = self.tr("Conical") glb.shape[0] = self.toolcyl glb.shape[1] = self.toolsph glb.shape[2] = self.tooltor glb.shape[3] = self.toolcon # End of the tool shapes definition # ###################################################################### EC_L.readTooltable(self) EC_UA.populateUI(self) ###################################################################### # # Translatable string goes here i didn't find a method to make it # work flawlessy in some QMessageBox # ###################################################################### # Exit Dialog self.msg_01t = self.tr("<b>Exit Dialog</b>") self.msg_01m = self.tr("Are You sure you want to exit?") # About EuroCAM Box self.msg_02t = self.tr("About ") self.msg_02m = self.tr("<b>SomeProgram</b> is a program. <br> \ <br> It generates some output to help you in \ figuring out the life, the universe and all other things.") # @

I'm using them in the About widget without too many problem like this:

@QMessageBox.about(self,self.msg_02t,self.msg_02m) @

For the others MessageBox i have written a def like this:

@
def closeEvent(self, event):
msgBox = QMessageBox()
msgBox.setText(self.msg_01t)
msgBox.setInformativeText(self.msg_01m)
msgBox.setStandardButtons(QMessageBox.Yes | QMessageBox.Cancel)
msgBox.setDefaultButton(QMessageBox.Yes)
msgBox.setIcon(QMessageBox.Question)
ret = msgBox.exec_()
event.ignore()
if ret == QMessageBox.Yes:
# Do Something
event.accept()
elif ret == QMessageBox.Cancel:
event.ignore()@

In this manner it works as expected and if you note in the first lines of the examples i have translate some messages that are referenced in another module of the program. After struggling with this behavior I have found this solution that isn't too bad and not too unelegant, but the readability of the code suffers a little.

Regards
Carlo D.

I didn't know about QJSEngine, How could I miss it?

Yeah, I should question potential users. But now that I found QJSEngine I will first check it.

Thank you very much for your help!

Hi,

AFAIK, no, but you can use Qt's xml module to generate the WDDX data

Hi and welcome to devnet,

Something like a QListView with a QStyledItemDelegate or you can also use QML which might be simpler in that case.

Hope it helps

I've just encountered a similar error in my code. Looks like it is similar to what is described "here":http://www.daa.com.au/pipermail/pygtk/2008-August/015767.html.

I followed the suggestion there to work around it by providing the local variables as default arguments to the function, in your case:
@def jsbinder(mainFrame=mainFrame):@

It looks like the general bug "was fixed a long time ago":http://www.riverbankcomputing.com/hg/sip/rev/8bf735cda5bf, but there are still corner cases where it may happen.

I'd say that with QML you're on the right track.

[quote author="nullstellensatz" date="1421370989"]The operation that is taking too long is a library function call that I have little control over.[/quote]That's unfortunate. Any chance of getting the library's author to provide a better API?

[quote]I am looking to understand why I cannot terminate() QThreads in PySide.[/quote]Not sure (I don't have Python experience), but judging from your error message, I'm guessing it's related to how PySide handles the "Global Interpreter Lock":https://docs.python.org/2/c-api/init.html#thread-state-and-the-global-interpreter-lock

Hi and welcome to devnet,

It's rather that you are giving the slot a parameter. You also can't connect a parameterless signal to a slot with parameter.

Anyway, for your purpose the use of a lambda is perfectly fine

Now even better. I've found that calling toUtf8() turns the unicode array implicit in the QString passed by the original @pyqtSlot decorator into something which can be written to file without messing about, and which preserves special characters. I've no idea why no combination of python str() and bytearray() encode and decode operations could seem to achieve this, but it's done now...
https://github.com/cefn/firmware-codesign-readinglog/blob/8c315b85c14f83539313bace54453565ba8aa9f6/ui/test/test.py