May-24-2017, 05:11 PM
I have a QPlainTextEdit 's textChanged event connected to _criterion_txt_textChanged function.
I want the user not to able to enter a value grater than 2 and smaller than 1.
It can be int or decimal (float).
When terms are not satisfied, I want to set it's text to '1'.
(or maybe cancel update if possible)
This is what I've done, but not working.
I want the user not to able to enter a value grater than 2 and smaller than 1.
It can be int or decimal (float).
When terms are not satisfied, I want to set it's text to '1'.
(or maybe cancel update if possible)
This is what I've done, but not working.
def _criterion_txt_textChanged(self):
if not re.match("\d*\.?\d*", criterion_txt.toPlainText()):
msg = "Only integers and decimals allowed, from 1 up to 2"
print(msg)
criterion_txt.setPlainText("1")
try:
text = float(criterion_txt.toPlainText())
except:
criterion_txt.setPlainText("1")
msg = "Only integers and decimals allowed, from 1 up to 2"
print(msg)
How can I achieve this?