event-handling

问题 I have a text block in my xaml: <DataTemplate x:Key="InterfacesDataTemplate" DataType="ca:Interface"> <Grid> <Grid.RowDefinitions> <RowDefinition Height="Auto" /> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition Width="*" /> </Grid.ColumnDefinitions> <TextBlock Grid.Column="1" Text="{Binding Path=Name}" MouseLeftButtonDown="interface_mouseDown"/> </Grid> </DataTemplate> On the code behind I have an event handler for click (double-click) private void interface_mouseDown(object

问题 I have an application with many images that all look the same and perform similar tasks: <Image Grid.Column="1" Grid.Row="0" Name="image_prog1_slot0" Stretch="Uniform" Source="bullet-icon.png" StretchDirection="Both" MouseDown="image_prog1_slot0_MouseDown"/> <Image Grid.Column="1" Grid.Row="1" Name="image_prog1_slot1" Stretch="Uniform" Source="bullet-icon.png" StretchDirection="Both" /> <Image Grid.Column="1" Grid.Row="2" Name="image_prog1_slot2" Stretch="Uniform" Source="bullet-icon.png"

问题 I have an application with many images that all look the same and perform similar tasks: <Image Grid.Column="1" Grid.Row="0" Name="image_prog1_slot0" Stretch="Uniform" Source="bullet-icon.png" StretchDirection="Both" MouseDown="image_prog1_slot0_MouseDown"/> <Image Grid.Column="1" Grid.Row="1" Name="image_prog1_slot1" Stretch="Uniform" Source="bullet-icon.png" StretchDirection="Both" /> <Image Grid.Column="1" Grid.Row="2" Name="image_prog1_slot2" Stretch="Uniform" Source="bullet-icon.png"

问题 I have a problem with one function. I use Python 3.7, and when I try to use the onkeypress() function, nothing happens. I try to check it, but the turtle module doesn't react when I press keys. I try to move my paddle up using the 'w' key. But it doesn't work. Below are my *.py files: main.py import elements import turtle #Windows settings window = turtle.Screen() window.title("Pong game by Kosa") window.bgcolor('black') window.setup(width=800, height=600) window.tracer(0) paletka_1 =

问题 This question already has answers here : Checking for null before event dispatching… thread safe? (6 answers) Closed 3 hours ago . For example, implement INotifyPropertyChanged interface: public event PropertyChangedEventHandler PropertyChanged; private void OnPropertyChanged([CallerMemberName] string propertyName = null) { var handler = PropertyChanged; if (handler != null) handler.Invoke(this, new PropertyChangedEventArgs(propertyName)); } Two things: Copy event to local variable to prevent

问题 Listen for custom events for the bus in component b. However, after dispatching events in component a, it accesses component b. the listening function of component b is executed, but msg of data function is not updated Please don't say Vuex . The relevant code is based on Vue CLi3 Here code: Component A: <template> <div> Component A <button @click="sendMsg">pushB</button> </div> </template> <script> import bus from './bus' export default { methods: { sendMsg() { bus.$emit('send', 'hello

问题 I need your help. I'm currently working with a modal lib in JavaScript to display a modal for my customers: https://github.com/vodkabears/Remodal/tree/1.1.1 Unfortunately my event handling in case the user clicks a button don't works like expected. When you take a look into the manual, you can see under the point Events the following event handler: $(document).on('cancellation', '.remodal', function () { console.log('Cancel button is clicked'); }); This one get's triggered for example when

问题 I need your help. I'm currently working with a modal lib in JavaScript to display a modal for my customers: https://github.com/vodkabears/Remodal/tree/1.1.1 Unfortunately my event handling in case the user clicks a button don't works like expected. When you take a look into the manual, you can see under the point Events the following event handler: $(document).on('cancellation', '.remodal', function () { console.log('Cancel button is clicked'); }); This one get's triggered for example when

问题 I need your help. I'm currently working with a modal lib in JavaScript to display a modal for my customers: https://github.com/vodkabears/Remodal/tree/1.1.1 Unfortunately my event handling in case the user clicks a button don't works like expected. When you take a look into the manual, you can see under the point Events the following event handler: $(document).on('cancellation', '.remodal', function () { console.log('Cancel button is clicked'); }); This one get's triggered for example when

问题 I have to rewrite the following VB code that is subscribing to a delegate (event), into python, using python.net. Imports MtApi Public Class Form1 Private apiClient As MtApiClient Public Sub New() InitializeComponent() apiClient = New MtApiClient AddHandler apiClient.QuoteUpdated, AddressOf QuoteUpdatedHandler End Sub Sub QuoteUpdatedHandler(sender As Object, symbol As String, bid As Double, ask As Double) Dim quoteSrt As String quoteSrt = symbol + ": Bid = " + bid.ToString() + "; Ask = " +