signals

问题 I'm new to Blackberry 10 development. I've created simple BB 10 cascades project. I want to change the text of a label through c++ function. main.qml import bb.cascades 1.0 Page { content: Container { id: containerID Button { id: button1 objectName: "button" text: "text" onClicked: { btnClicked("New Label Text"); } } Label { id: label1 objectName: "label1" text: "Old Label Text" } } } Now in which file i've to declare and in which file i've to define the function btnClicked(QString) function.

问题 I'm trying to get my keyboard movement to work using signals and a Hero class. So far I can get the signal to dispatch but I can't get it to take the keyboard input. Should I be using signals for movement at all or should I just call the function from the Hero class. This is the code for Hero: package { import flash.display.MovieClip; import flash.display.Sprite; import org.osflash.signals.Signal; import flash.events.Event; import com.natejc.input.KeyboardManager; import com.natejc.input

问题 I made a widget that behaves as a window and when a button is pressed it simply emits a signal: signals: void SaveTask( void ); in my mainwindow.cpp I define (in the constructor): connect( taskWindow, SIGNAL(SaveTask()), task_view, SLOT(UpdateFromTasks()) ); taskWindow = pointer to window where this signal emits. task_view = pointer to treewidget in mainwindow with a slot. It is designed so that when you save a task it is displayed in the treeview. unfortunately when I try to run the program

问题 I've got two classes; one for my window and one for my controlling object class window(baseClass, testForm): scanStarted = QtCore.pyqtSignal(str) def __init__(self,parent=None): super(window, self).__init__(parent) self.setupUi(self) #other window setup self._scanner.pushScan.clicked.connect(self._scanClicked) def _scanClicked(self): self.scanStarted.emit( self._scanner.getTextData() ) and my controlling object class vis(QtCore.QObject): def __init__(self): self._oreList = [] self._w = window

问题 I have the below given structure in my project -parentDirectory -myModule __init__.py models.py handler.py models.py @register class Student(): number = models.PositiveIntegerNumber(unique=True) name = models.CharField(max_length=64) def post_delete: """some code""" def post_save: """some code""" @register class Course(SomeBaseModel): code = models.CharField(unique=True) teacher = models.CharField(max_length=64) SomeBaseModel has post_delete and post_save functions defined in it. handler.py

问题 I'm relatively new to QT. In my code, I create a QTableWidget, iterate through the rows and set the cells to QLineEdits and QCheckBoxes. I want to make it so that changing the text within any of the QLineEdits or checking/unchecking the QCheckBoxes causes my table to fire a signal passing either the item in question, or the row/column that it's within. I build the table here: for(int row=0; row < conditionTable->rowCount(); row++) { QLineEdit *condition = new QLineEdit; conditionTable-

问题 sIn my application, I try to catch a specific signal which is SIGUSR1, I wrote the below code to do this issue, in which the application will create a thread for "init_signal_catcher". The problem is when I run the code ,the program goes to sleep forever and does not respond to any signal even if it is SIGUSR1. So could you please tell me what is the problem in my below code? Note: The below can be run directly without having to create a thread, just replace the function name init_signal

问题 MI have a program that starts with for loop and it spins for 10 times, and one loop lasts one second. I need to handle a signal (CTRL+C) and while handling it, it should do it's own for loop, and after it stops, then I should return to the main loop. I've managed to do almost everything above, but the loops don't execute separately. They do it parallel. Hope you can help... thanks :) BTW, my code is: import sun.misc.Signal; import sun.misc.SignalHandler; public class MySig { public static

问题 Given an heart beat signal measured using a stethoscope to the audio card of the computer through a hardware(mainly amplifier and low pass filter having cutoff frequency 100hz). Now the signal is filtered with cutoff 100hz..the code to find the peak and beats per minute is given below..The code works only for certain cases. Please help me find the mistake clear all %input the signal into matlab [x,fs]=wavread('heartbeat.wav'); figure(1) subplot(2,1,1) x1=x(:,2); plot(x1(500:10000),'r-');

问题 Is it possible to trigger some kind of signal or configure a hook (e.g. execution of defined / hard coded shell script) after editing one specific page of a MediaWiki? The scenario is as follows. Up to now a RSS feed is generated from the content of one specific MediaWiki page (call it wiki/index.php?title=News ) each time the RSS feed is requested. As this page gets edited only once in a couple of days, having a Perl::CGI oder PHP script as the source of the RSS feed (e.g. URL for feed