You can connect a signal to a slot with connect and destroy the connection with disconnect. You can vote up the examples you like or vote down the ones you dont like. Pyqt comes with a program, pyuic4, that can convert these. Long long ago, subclass qthread and reimplement its run function is the only recommended way of using qthread. Using a fairly standard code found here this is what i have. The qobject class is the base class of all qt objects. Signals are connected to slots using the connect method of a bound signal. I am trying to scrape several webpages and i know the urls in advance. It is a python interface for qt, one of the most powerful, and popular crossplatform gui library. By voting up you can indicate which examples are most useful and appropriate. Slot macros allow python to interface with qt signal and slot delivery mechanisms. Qt makes only limited use of this feature, in the active qt, qt dbus and qt qml.
Only users with topic management privileges can see it. The example below uses the well known clicked signal from a qpushbutton. The extra information takes the form of a name string and a value literal string. The following are code examples for showing how to use pyqt4. The connect method has a non pythonfriendly syntax. The following are code examples for showing how to use pyqt5. Generating code or not when we save our project in qt designer, it will create a.
The central feature in this model is a very powerful mechanism for seamless object communication called signals and slots. Browse other questions tagged python windows pyqt or ask your own question. They are extracted from open source python projects. An exception will be raised if the connection failed. Hughes, one of the qt core developers, recommend that use worker objects by moving them to the thread using qobject. I create simple application using 2 windows, and i want connect it with button using pyqtsignal, but when i run the application display information typeerror. Pyqt qmessagebox qmessagebox is a commonly used modal dialog to display some informational message and optionally ask the user to respond by clicking any one of the standard but. But when slots and qt event loop are used in the worker thread, some users do it wrong.
1312 845 120 1396 1467 1327 322 1084 1024 961 1086 1557 1075 27 800 1298 639 610 458 699 184 496 38 1256 905 533 496 359 449 379 726 932 161 372 1198 1206 118 736 249 394 131