NB it is wrong to suppose there is little point in the last of these 3, where such compliance is not in fact checked. # until you put focus back on the app (from the DOS screen). # NB a KeyboardInterrupt on the DOS screen from which the app was launched, will not be "seen" Ms_now = ().isoformat(sep=' ', timespec='milliseconds') Raise Exception('attempt to call MainWindow.append_message from non-app thread') Example which logs messages visually during execution: def append_message(self, message):Īpp_thread = ().thread()Ĭurr_thread = () Then also include a check in all your slot methods which are likely to receive data from a non-"application thread". The thing to do is to use the signal/slot mechanism to send any kind of data from a worker thread (a thread created in my case by extending QtCore.QRunnable, one other pattern apparently being QtCore.QThread and, see here). I put this in quotes because it appears to be a mistake to think that, even in a fairly simple PyQt5 app, QApplication.instance().thread() will always return the same object. Quite new to PyQt5, but this appears to happen when you try to do a GUI operation from a thread which is not the "application thread". I need to know how to send parameters to a thread, in my case i need to send q to the worker thread. I think that my way of send parameter to the thread is wrong. nnect(nder, QtCore.SIGNAL('tri()'), self._action_About) T.daemon = True # thread dies with the program T = threading.Thread(target=enqueue_output, args=(p.stdout, q)) ON_POSIX = 'posix' in sys.builtin_module_names #from queue import Queue, Empty # python 3.x """ This class is for managing the whole GUI `Workspace'.Ĭurrently a Workspace is similar to a MainWindow Here is my code: class Sender(QtCore.QThread):Ĭlass Workspace(QMainWindow, Ui_MainWindow): (Make sure 'QTextCursor' is registered using qRegisterMetaType().) If you try to bind to CloudQueueMessage and get an error message, make sure that you have a reference to the correct Storage SDK version.Im trying to send a signal from a non-main thread in PyQt but i dont know what am doing wrong! And when i execute the program it fails with this error: QObject::connect: Cannot queue arguments of type 'QTextCursor' The default storage account for the function app, which is defined in the AzureWebJobsStorage application setting.The StorageAccount attribute applied to the class.The StorageAccount attribute applied to the function.The StorageAccount attribute applied to the same parameter as the trigger or binding attribute.The trigger or binding attribute's Connection property.The storage account to use is determined in the following order: The following example shows class level and method level: The attribute can be applied at the parameter, method, or class level. The constructor takes the name of an app setting that contains a storage connection string. You can do this when you need to use a different storage account than other functions in the library. While the attribute takes a Connection property, you can also use the StorageAccountAttribute to specify a storage account connection. You can write multiple messages to the queue by using one of the following types:įor examples using QueueMessage and QueueClient, see the GitHub repository for the extension. You can use the method return type instead of an out parameter, and T can be any of the following types:įor examples using these types, see the GitHub repository for the extension. Write a single queue message by using a method parameter such as out T paramName. The parameter associated with the QueueOutput annotation is typed as an OutputBinding instance. Points to the storage account connection string. When the function is triggered, this parameter's value has the contents of the queue message.ĭeclares the queue name in the storage account. Return request.createResponseBuilder(HttpStatus.OK).body("Done").build() ĭeclares the parameter name in the function signature. tValue(request.getQueryParameters().get("name")) Here's the JavaScript code: module.exports = async function (context, input), authLevel = AuthorizationLevel.FUNCTION) HttpRequestMessage> = "message", queueName = "messages", connection = "MyStorageConnectionAppSetting") OutputBinding message, The configuration section explains these properties. "connection": "MyStorageConnectionAppSetting" The function creates a queue item for each HTTP request received. The following example shows an HTTP trigger binding in a function.json file and a JavaScript function that uses the binding.
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