Qlineedit Text Color Apr 2026

layout.addWidget(lineEdit); window.show(); return app.exec(); Less flexible but works without style sheets.

layout.addWidget(line_edit) layout.addWidget(line_edit2) layout.addWidget(line_edit3) window.setLayout(layout) window.show() app.exec() #include <QApplication> #include <QLineEdit> #include <QVBoxLayout> #include <QWidget> int main(int argc, char *argv[]) QApplication app(argc, argv); QWidget window; QVBoxLayout layout(&window); qlineedit text color

def validate_email(self, text): if "@" not in text: self.error_input.setStyleSheet("QLineEdit color: red; ") else: self.error_input.setStyleSheet("QLineEdit color: green; ") if == " main ": app = QApplication(sys.argv) window = MainWindow() window.show() sys.exit(app.exec()) 6. Key Points to Remember | Property | Description | Example | |----------|-------------|---------| | color | Text color | color: #ff0000; | | ::placeholder | Placeholder text styling | QLineEdit::placeholder color: gray; | | :focus | When widget has focus | QLineEdit:focus color: blue; | | :disabled | Disabled state | QLineEdit:disabled color: #aaa; | | :read-only | Read-only state | QLineEdit:read-only color: #666; | layout