On Friday 24 September 2010, 22:58:10 Eric Frederich wrote:
> I'm having some trouble trying to figure out how to get two line edits to
> constantly be in sync including cursor position.
> I'm sure its simple, or a matter of creating the right connections, but I
> can't seem to figure it out.
> I'm hooking two line edits textChagned signal up to the other's setText
> slot.
>
> Thankfully PyQt (or Qt)'s setText is smart enough to check whether the
> text actually changed before emitting another signal and not getting
> stuck in an infinite loop.
You're a lucky man.
> The problem seems to be that setText on a QLineEdit doesn't do a similar
> check before changing the cursor position.
>
> I'd like to get two line edits synced up so that I can insert text in the
> beginning, middle, or end of the string but after any letter gets typed
> the cursor goes to the end of the string.
How about this:
#!/usr/bin/env python
from PyQt4.QtCore import *
from PyQt4.QtGui import *
class LineEdit(QLineEdit):
def setText(self, text):
pos = self.cursorPosition()
super(LineEdit, self).setText(text)
self.setCursorPosition(pos)
class MyForm(QDialog):
def __init__(self, parent=None):
super(MyForm, self).__init__(parent)
layout = QVBoxLayout()
le1 = LineEdit()
le2 = LineEdit()
layout.addWidget(le1)
layout.addWidget(le2)
self.setLayout(layout)
le1.textChanged.connect(le2.setText)
le2.textChanged.connect(le1.setText)
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
mf = MyForm()
mf.show()
sys.exit(app.exec_())
Cheers,
Pete
> Any help is appreciated.
>
> Thanks,
> ~Eric
>
> #!/usr/bin/env python
>
> from PyQt4.QtCore import *
> from PyQt4.QtGui import *
>
> class MyForm(QDialog):
> def __init__(self, parent=None):
> super(MyForm, self).__init__(parent)
> layout = QVBoxLayout()
> le1 = QLineEdit()
> le2 = QLineEdit()
> layout.addWidget(le1)
> layout.addWidget(le2)
> self.setLayout(layout)
>
> self.connect(le1, SIGNAL("textChanged(QString)"), le2.setText)
> self.connect(le2, SIGNAL("textChanged(QString)"), le1.setText)
>
> if __name__ == '__main__':
> import sys
> app = QApplication(sys.argv)
> mf = MyForm()
> mf.show()
> sys.exit(app.exec_())
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