when i add the widget to the main window, by default the action menu item will be present,
how to remove that?
menuBar()->setVisible(false);
verAction = new QAction(tr("&Version"),this);
menuBar()->addAction(verAction);
connect(verAction, SIGNAL(triggered()),this, SLOT(displayVersion()));
displayAction = new QAction(tr("&Display"),this);
menuBar()->addAction(displayAction);
connect(displayAction, SIGNAL(triggered()),this, SLOT(displayMessage()));
exitAction = new QAction(tr("&Exit"),this);
menuBar()->addAction(exitAction);
connect(exitAction, SIGNAL(triggered()),this, SLOT(close()));
Thanks
If you want to hide an QAction and display it when you need it, you can use the setVisible function.
If you want to remove the menu bar from the QMainWindow, you can use the QT_NO_MENUBAR preprocessor to remove all uses of a QMenuBar. If you are not using facilities provided by QMainWindow, maybe you can use a simple QWidget as main window in your application.
[Edit]
If you want to hide QActions at runtime, you will find them as member of the QMainWindow's UI. For example if you have a QAction named actionTest, you will access it like that: this->ui->actionTest->setVisible(false);
I know what you mean... you want to HIDE the DEFAULT CONTEXT MENU "Actions"....
You can do this in the Design section (not in code).
Then you see your Object-Stack on the right side like
MainWindow QMainWindow
centralWidget QWidget
webView QWebView
Now go to the property editor below...search for "contextMenuPolicy" and change it from "DefaultContextMenu" to "NoContextMenu" for every component if necessairy.
In order to remove the default context menu with the label "Actions" the following code may be used:
// Remove context menu from the all widgets.
QWidgetList widgets = QApplication::allWidgets();
QWidget* w=0;
foreach(w,widgets) {
w->setContextMenuPolicy(Qt::NoContextMenu);
}
Essentially, the same as the Joel's answer, but the code version :)
(Code taken from QFriendFeed sample from forum.nokia.com)
Related
If I create and show a top-level QWidget, drag it to a new position on the desktop, then call widget->hide() followed by widget::show(), it generally reappears in a different place from where it was previously.
I can add code to the subclass which saves and restores its geometry, but I'm wondering if there's an in-Qt system for giving hints to the window manager as to where the widget should appear when shown.
Is there a nice way to do this?
I create a "Qt Widgets Application" and drag in a QPushButton, then add the following code:
void Widget::on_pushButton_clicked()
{
hide();
show();
}
Run the program, drag the widget to a new position, and then click on the button and I find that the widget is still in the same place, not like you said
I have setup my app to have various dock windows within the main window. I am also able to add a toolbar to the main window. However, I would ideally like to add the QToolBar inside one of the QDockWindow instances (or the QWidget that it houses) as the toolbar will be specific to that window.
Is this possible? I'm using a recent version of Qt, 5.10.
I think it is possible.
1.QDockWidget can set a QMainWindow by setWidget() method.
QMainWindow is made for just a mainwindow but it is not prevented from being used as a subwidget.
2.QToolBar can be attached to the main-subwindow by addToolBar() method.
3.The subwidget-mainwindow can naturally have its own QToolbar.
If you don't want to use QMainWindow as the widget of its QDockWidget,you can attach the QToolBar as a child widget of QDockWidget. But The toolbar is not movable as QMainWindow's.
I think you want to add QToolBar and use it as QMainWindow.
So I recommend that you set a QMainWindow as the widget of QDockWidget.And you attach any widget you like to the mainwindow after that.
I want to know is it possible to make application fully skinned/styled in Qt I mean by that not only controls inside the application window but the mainwindow itself! like close button/maximize button/minimize button and the bar, and the mainwindow border!, is it possible to do that in Qt? and how to?
Yes it is possible. The best method in Qt is to use Qt style sheets. The Qt documentation has plenty of examples and you can style all the widgets, either by specifying a whole class such as QPushButton, or a single, named widget.
As for the items on the title bar, I'm not sure if that's possible directly, but you could certainly turn off the main tool bar that contains the minimise / maximise buttons and then implement and style your own widgets while replicating their functionality.
The second argument to the QWidget constructor is Qt::WindowFlags. You can use the flags to control the properties of a window. For example, pass the flag Qt::FramelessWindowHint to create a borderless window.
There are a few ways to do this in code. You can use the setWindowsFlag method from within your widgets constructor:
setWindowFlags(Qt::FramelessWindowHint);
If you are creating a custom widget, you can pass the flag to QWidget's constructor:
YourWidget::YourWidget(QWidget *parent) : QWidget(parent, Qt::FramelessWindowHint)
{
// ....
}
Or you can pass the flag when you create a widget:
QWidget *your_widget = new QWidget(parent, Qt::FramelessWindowHint);
There are also flags for the minimize button (Qt::WindowMinimizeButtonHint), maximize button (Qt::WindowMaximizeButtonHint), close button (Qt::WindowCloseButtonHint), and title bar (Qt::WindowTitleHint). With these flags, you must also set Qt::CustomizeWindowHint to disable the defaults as described in the documentation.
See the flags documentation for a full list and additional details.
As #Merlin069 stated, style sheets allow you to control the look and feel of the widgets within your application.
I think i'm having a fairly basic Qt problem, but i can't figure it out:
I have a QMainWindow which holds a QStackedWidget. All page widgets in there are seperate classes derived from QWidget.
So:
QMainWindow implements QStacked Window in one class.
All other pages inside the stacked widget are added classes and all have there own .ui filled with buttons and lists trough the Designer.
For navigating to different pages, inside the Mainwindow i have access to: ui.stackedWidget->setCurrentIndex(2);
It seems i don't have access to ui.stackedWidget on another page inside the stacked widget? I have no access to the ui.stackedWidget because Ui is a private member in the mainwindow class. (auto generated by Qt - using VS addon for adding QT4 classes)
I would like to know, how can i jump to another page in the stacked widget, when clicking on a button that belongs to another page inside this widget?
Note:
All pages are added to the StackedWidget in mainWIndow's constructor:
ui.stackedWidget->addWidget(page1Widget);
ui.stackedWidget->addWidget(page2Widget);
// etc..
Example of a button click signal-slot inside page1Widget:
connect(ui.btnViewData, SIGNAL(clicked()), this, SLOT(viewData()));
::viewData()
{
// navigate to another page here.
// note: ui.stackedWidget->setCurrentIndex(3); is not accessible here!
}
I believe that putting your connect() and viewData() functions within your QMainWindow object will solve your problem, since the main window can have access to both the signals emited by the child widgets and the QStackedWidget items.
You might need to write a Ui getter for each of your page, and then do something like
connect(page1Widget->getUi().btnViewData, SIGNAL(clicked()), this, SLOT(viewData)));
hope it helps,
cheers
Is it possible to get layout from QMenuBar object and add items to it. What I am trying to do is a menu bar containing custom widgets (a clock and login/off widget) on the right.
This code crashes.
QPushButton *b1 = new QPushButton("Button",ui->menuBar);
QHBoxLayout *rlayout = new QHBoxLayout(this);
ui->menuBar->layout()->addItem(rlayout);
rlayout->addWidget(b1);
b1->show();
Is there any other way?
Best regards,
Valentin Heinitz
Would it be possible to create your own container widget, put the menu bar in on the left, and the other widgets in on the right? That should get you similar functionality and appearance to the Qt3 version of the menu bar.
You should look into QWidgetAction, that allows you to insert custom widget in a menubar. You would then have to call QMenuBar::addAction(QAction*) to put your QWidgetAction in the menubar.
I know that it is not part of your question, but maybe QDockWidget would do a better job for what you need??
Hope this helps.