qwidget

I have to make something like the iOS interface, 3x3 field of icons that can be dragged to change their position, and then remember it in an XML file. I decided to use Grid class (QWidget is parent) as a container and my own class, inherited from QWidget, as elements. Now I'm trying to learn how to perform a drag & drop for QWidget, but it seems like you are only able to drop onto a QWidget, but it's impossible to drag it. Is it impossible? How do I move this thing? Greenflow Dragging a widget isn't that easy. Plenty of coding you have to do yourself. From the Qt Docs : void MainWindow:

I am new to Qt and I am doing some practice with simple examples. I just wanted to test my knowledge with a simple application, by coding, in which user types a text in QLineEdit widget and the text will be shown in QLabel. There is no need for it to be useful. I just want to try. While compiling the application, I get no errors. However, QLabel and QLineEdit widgets are not visible when the window is opened. My codes are here: Window.h #ifndef WINDOW_H #define WINDOW_H #include <QMainWindow> class QGridLayout; class QLabel; class QLineEdit; class Window : public QMainWindow { Q_OBJECT public:

I have one main Widget and inside this main widget I have QListWidget and two buttons. I have override the keyPressEvent inside the main widget (inherited from QWidget ). I can receive the keyPress events when focus is not on QListWidget , but when focus is inside the QListWidget I am unable to receive these keyPress events. Below is the code I have used to achieve this: MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); this->setFocusPolicy(Qt::StrongFocus); ui->listWidget->addItem(new QListWidgetItem("Item1")); ui->listWidget->addItem

I have a simple QStackedWidget with 3 different QWidgets in it. The minimum sizes of the QWidgets are (350x200), (200x100), and (450x450). So the problem I'm having is when I resize the QStackedWidget, it has a minimum size of the largest QWidget within it. So if I switch to the second QWidget, (which is the QWidget with the size of (200x100)), the QStackedWidget will only size down (450x450) because of the largest QWidget inside of it. I would like it to size down to fit the current QWidget being displayed, and remove that minimum size. I think that the most straightforward solution is to

I know that there is a function QWidget::setWindowOpacity(qreal level) but as written in the documentation this does only work for windows. Is there a way to make widgets that are lying inside layouts opaque too? What I'm trying to do is an animation where widgets are fading in. I once did that with a preferences-dialog and there it worked. So do you think there is a way or a work-around to achieve opacity for widgets inside layouts? How would you do that? Thanks in advance! Miguel Fuentes Just use QGraphicsOpacityEffect in order to achieve this effect. Qt4: http://doc.qt.io/qt-4.8