![keep two windows on top of each other keep two windows on top of each other](https://hgtvhome.sndimg.com/content/dam/images/hgtv/fullset/2019/8/27/0/IO_Amy-Elbaum_Hummingbird_11.jpg)
Once you have created a persistent window you can show and hide it without recreating it. show() on an already visible window has no effect. However, note that the window is only created once and calling. If you run this, clicking on the button will show the window as before. We can use this behaviour to close a window, replacing the show_new_window method from the previous example with – As we previously saw, if no reference to a window is kept, it will be discarded (and closed). Often you'll want to toggle the display of a window using an action on a toolbar or in a menu.
#Keep two windows on top of each other how to#
In the next part we'll look at how to work with these types of windows. However, for many applications you have a number of standard windows that you want to be able to show/hide them on demand. This approach is fine for windows that you create temporarily – for example if you want to pop up a window to show a particular plot, or log output. If you click the button again, the same window will re-appear. Using the button you can pop up the window, and use the window controls to close it. (self.show_new_window)Ĭhild window with a label randomly generated on creation. Self.button = QPushButton("Push for Window") Self.label = QLabel("Another Window % d" % randint(0,100)) Will appear as a free-floating window as we want.
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Python from PyQt5.QtWidgets import QApplication, QMainWindow, QPushButton, QLabel, QVBoxLayout, QWidget This can get confusing for users however, so make sure it's necessary.Īs with your main window, creating a window is not sufficient, you must also show it. If you need toolbars or menus on your second window you will have to use a QMainWindow to achieve this. There is no restriction on the number of QMainWindow instances you can have. This can be any widget type (technically any subclass of QWidget) including another QMainWindow if you prefer. This means, to show a new window you just need to create a new instance of a widget. In Qt any widget without a parent is a window. In this tutorial we'll step through how to create a new window, and how to show and hide external windows on demand. It's relatively straightforward to open new windows but there are a few things to keep in mind to make sure they work well. Alternatively, you may want to create an application that allows you to work on multiple documents at once, in their own windows. However, quite often you will want to open a second window in an application, without interrupting the main window - for example, to show the output of some long-running process, or display graphs or other visualizations. These are special windows which (by default) grab the focus of the user, and run their own event loop, effectively blocking the execution of the rest of your app. In an earlier tutorial we've already covered how to open dialog windows.