c++ - Age validation while using line edit in qt - Stack Overflow
This is where you're supposed to do the age validation: QString final; for (int i = 0; i < input.length(); ++i) { QChar c = input.at(i); if (c.isDigit()) final += c; input = final;
Line Edits Example | Qt Widgets | Qt 6.9.0
Presenting these together helps developers choose suitable properties to use with line edits, and makes it easy to compare the effects of each validator on user input. The Window class …
Qt calculate age from a QDate - Stack Overflow
Jul 11, 2022 · auto age = today.year() - birthday.year(); return today.month() >= birthday.month() && today.day() >= birthday.day() ? age : age - 1; I have a birthdate stored as QDate and I …
QLineEdit Class | Qt Widgets | Qt 6.9.0
For more information on the many ways that QLineEdit can be used, see Line Edits Example, which also provides a selection of line edit examples that show the effects of various …
Calculate age from date of birth in C++ - CodeSpeedy
In this tutorial, we will learn how to calculate age from date of birth in C++. We make an age() function and access it to achieve the goal.
QLineEdit in Qt Programming: A Comprehensive Tutorial with …
Apr 26, 2025 · Concept You can create your own widget that visually resembles and functions like a single-line edit but with completely custom drawing and input handling. Using Third-Party or …
Age Calculator using C++ | Aman Kharwal - thecleverprogrammer
Aug 12, 2021 · So, if you want to learn how to create an age calculator using the C++ programming language, then this article is for you. In this article, I will walk you through how to …
How to add pop up calender to select Date Of Birth into a QLineEdit
Jun 14, 2011 · I want to add a calendar into QLineEdit which pops up when selected by user to enter his/her DOB.I want know whether there is any in-build function in Qt for this purpose.If …
c++ - how to write and read a text to and from a LineEdit using QT ...
Aug 18, 2015 · You use QLineEdit::setText() to change the text and QLineEdit::text() to read. Your questions are very basic and show a clear lack of studying the documentation and …
Use embedded data to calculate age on a specific future date, …
In my survey, I am asking applicants for their date of birth (DD/MM/YYYY). I would then like to calculate the applicant’s age based on the date of birth they entered in the survey and based …