Triggering the completer codewise

Hi,

For 2 days I am stuggling with de completer in PYQT. I expect the solution to be quite simple but, can't figure it out.

I want to use the completer to show suggestions in a Popup screen under a QLineEdit. If I type in my QLineEdit everything works great, but if I fill the QLineEdit with a command (I use an on screen keyboard) the popup is not displayed.

Just to illustrate I got the problem caught in a small sample program, if I type in de QLineEdit it's OK, If I press the Button it doesn't do anything.....

Regards,
Sytse

Code:

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import sys
from PyQt4.QtGui import QApplication, QCompleter, QLineEdit, QStringListModel, QPushButton
 
def handleButton(model):
    edit.setText('co')
 
def get_data(model):
    model.setStringList(["completion", "data", "goes", "here"])
 
if __name__ == "__main__":
 
    app = QApplication(sys.argv)
    edit = QLineEdit()
    completer = QCompleter()
    edit.setCompleter(completer)
 
    model = QStringListModel()
    completer.setModel(model)
    get_data(model)
 
    edit.textChanged.connect(completer.setCompletionPrefix)
 
    app.button = QPushButton('Test')
    app.button.clicked.connect(handleButton)
 
    edit.show()
    app.button.show()
    sys.exit(app.exec_())

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