[SOLVED] PySide strings returned from widgets have extra blank bytes between the letters
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Hi,
I built pyside using the buildscripts on CentOS 6.5 and Qt 4.8 (installed using these repos http://www.qtcentre.org/threads/56495-How-to-install-4-8-on-CentOS-6) on a virtual environment using Python 2.7I tested an application that works perfectly fine on Windows and OSX and found that whenever I printed a string from a widget (ie. comboBox.currentText() where comboBox is a QComboBox) I was missing half the string.
Checking the length of the returned object I found that it had the correct length, but uppon further inspection I realized it had an extra blank byte between each letter. For example, a QLineEdit with the text "hello" would only print "hel".
Printing the string as hex bytes using:
@print ":".join(['%0X' % ord(b) for b in myString])@
resulted in something like 68:0:65:0:6C, where indeed there is a 0 byte between each character.
The GUI is built using pyside-uic from ui files created in the Creator.
This sounds like I'm getting two byte unicode characters, but why am I only getting half the bytes?
Am I missing something that needs to be configured at the app level?
Please help and thanks for any info in advance!
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Here is a trivial example that prints text from a QLineEdit.
The QLineEdit text is set from a regular python string.
When printing the original text and the text read from QLineEdit.text() they print out different things.@
import sys
from PySide import QtGui
from PySide import QtCoreedit=None
myText=str("hello how are you")def printSomething():
textFromQt=edit.text()
print "\n---%s: %i---"%(textFromQt,len(textFromQt))
for l in textFromQt:
print '%s : %0X' % (l, ord(l) )print "\n\n---%s: %i---"%(myText,len(myText))
for l in myText:
print '%s : %0X' % (l, ord(l) )if name == "main":
app = QtGui.QApplication(sys.argv)
wnd=QtGui.QDialog()
layout= QtGui.QVBoxLayout(wnd)
btn=QtGui.QPushButton("push", wnd)
edit=QtGui.QLineEdit(myText)
layout.addWidget(edit)
layout.addWidget(btn)btn.clicked.connect(printSomething)
wnd.show()
sys.exit(app.exec_())
@And the output when pushing the button is:
@
---hello how: 17---
h : 68
: 0
e : 65
: 0
l : 6C
: 0
l : 6C
: 0
o : 6F
: 0
: 20
: 0
h : 68
: 0
o : 6F
: 0
w : 77---hello how are you: 17---
h : 68
e : 65
l : 6C
l : 6C
o : 6F
: 20
h : 68
o : 6F
w : 77
: 20
a : 61
r : 72
e : 65
: 20
y : 79
o : 6F
u : 75
@Thanks for any help!
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Hi and welcome to devnet,
Since it might be low level problem, you should also post your question on the pyside mailing list.
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Ok, I found the solution.
CentOS comes with Python 2.6 and I had created my virtual environment with Python 2.7 compiled from source.
I recompiled Python 2.7 adding --enable-unicode=ucs4 when configuring the build. The default is to compile with --enable-unicode=ucs2
so in the end I compiled like this:
@
./configure --prefix /usr/local --enable-shared --enable-unicode=ucs4
make
make altinstall
@I recreated my virtualenv with the newly compiled python and everything works as it should!
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That might be something to talk about with the pyside devs
