qdialog

I have a QDialog subclass containing some options of my application. Some of the options are core, the other are advanced, so I decided to put them into separeted checkable QGroupBox. I want my dialog to shrink verticaly when the user checked off advanced options box, but I can't find the way to do it properly - the dialog size stays exactle the same I set dialog's size policy to Expanding , tried to call adjustSize() and tried to call resize() method - nothing helps. I can't resize programmaticaly dialog to be smaller then it's current size (it only can become larger). At the same time, it is

In a dialog, when the tab key is pressed, the focus changes to another widget. In Qt, is there any signal for when a widget loses its focus? Can I use it to check if the input is valid or not? If not, can I set the focus back and ask the user to re-input? There's no signal but if you want to know when your widget has lost focus, override and reimplement void QWidget::focusOutEvent(QFocusEvent* event) in your widget. It will be called whenever your widget has lost focus. To give focus to a widget, use QWidget::setFocus(Qt::FocusReason) . To validate input in a QLineEdit or QComboBox you can

I have a Qt dialog application. Now I dont want that dialog to be resizeable. I am not sure how to achieve this. I tried a bunch of things but still when the dialog launches this dialog can be resized. What is the property that i should set to disable the dialog/Widget resize. I also tried setSizePolicy(QSizePolicy::Fixed); But i get an error saying.. source\nimcac_settingsMain.cpp(36) : error C2248: **'QSizePolicy::QSizePolicy' : cannot access private member declared in class 'QSizePolicy'** p:\ThirdPartyExports\Qt\export\4.3\4.3.1f14\include\QtGui\../../src\gui\ kernel\qsizepolicy.h(177) :

After typing 1, both as login and password, a new window should appear, but it gives an error. It used to work fine before I made some changes to code, and I don't know what exactly causes it. # -*- coding: utf-8 -*- from PyQt4 import QtGui, QtCore import sys app = QtGui.QApplication(sys.argv) login = QtGui.QDialog() login.setWindowTitle('login') login.resize(100, 100) login_form = QtGui.QFormLayout() row1 = QtGui.QHBoxLayout() user_input = QtGui.QLineEdit() row1.addWidget(user_input) login_form.addRow('user', row1) row2 = QtGui.QHBoxLayout() pwd_input = QtGui.QLineEdit() row2.addWidget(pwd

I'm having difficulty getting widgets in a QDialog resized automatically when the dialog itself is resized. In the following program, the textarea resizes automatically if you resize the main window. However, the textarea within the dialog stays the same size when the dialog is resized. Is there any way of making the textarea in the dialog resize automatically? I've tried using setSizePolicy(QSizePolicy.Ignored, QSizePolicy.Ignored) on the dialog itself and the two widgets within, but that seems to have no effect. I'm using Qt version 3.3.7 and PyQt version 3.5.5-29 on openSuSE 10.2, if that's

I am using Qt Dialogs in one of my application. I need to hide/delete the help button. But i am not able to locate where exactly I get the handle to his help button. Not sure if its a particular flag on the Qt window. amos By default the Qt::WindowContextHelpButtonHint flag is added to dialogs. You can control this with the WindowFlags parameter to the dialog constructor. For instance you can specify only the TitleHint and SystemMenu flags by doing: QDialog *d = new QDialog(0, Qt::WindowSystemMenuHint | Qt::WindowTitleHint); d->exec(); If you add the Qt::WindowContextHelpButtonHint flag you