Walter beat me to analysing the issue 🙂 Adding a bit of detail: It’s correct that a JScrollPane supports mouseWheelHandling. According to the rules of mouseEvent dispatching, the top-most (in z-order) component gets the event, and that’s the scrollPane around the textArea. So if wheeling the textarea is not required, a simple solution might be … Read more
It’s quite simple: Add “Exit” property to the application tag <Application x:Class=”WpfApplication4.App” xmlns=”http://schemas.microsoft.com/winfx/2006/xaml/presentation” xmlns:x=”http://schemas.microsoft.com/winfx/2006/xaml” StartupUri=”MainWindow.xaml” Exit=”Application_Exit”> </Application> and handle it in the “code behind” private void Application_Exit(object sender, ExitEventArgs e) { // Perform tasks at application exit } The Exit event is fired when the application is shutting down or the Windows session is ending. … Read more
I use the CellContentClick event, which makes sure the user clicked the checkbox. It DOES fire multiple times even if the user stays in the same cell. The one issue is that the Value does not get updated, and always returns “false” for unchecked. The trick is to use the .EditedFormattedValue property of the cell … Read more
Since the event is deprecated, you should avoid using it in new code, and plan on removing it from old code. The W3C specification says this about deprecated features: Features marked as deprecated are included in the specification as reference to older implementations or specifications, but are OPTIONAL and discouraged. Only features which have existing … Read more
Events in general: Events are always sent to inform about something (e.g. a change of state). Let’s take your example with a man and a wall. Here we can imagine that there is a game where a user can walk as a man in a labyrinth. Every time a user hits the wall it should … Read more
You probably forgot to give # before id for id selector, you need to give # before id ie is ulId You probably need to bind the scroll event on the div that contains the ul and scrolls. You need to bind the event with div instead of `ul` $(document).on( ‘scroll’, ‘#idOfDivThatContainsULandScroll’, function(){ console.log(‘Event Fired’); … Read more
This is how bindings work (and that’s a good thing), but your problem is easily solved. Bindings are fired in the order specified by a widgets binding tags (also known as bind tags or bindtags). Unless you specify otherwise, the bindings happen in the following order: if there is a binding directly on the widget … Read more
Different Style Sheets You can specify a different stylesheet for printing. <link rel=”stylesheet” type=”text/css” media=”print” href=”https://stackoverflow.com/questions/534977/print.css” /> <link rel=”stylesheet” type=”text/css” media=”screen” href=”main.css” /> One Style Sheet As kodecraft mentioned, you can also put the styles into the same file by using the @media block. @media print { div.box { width:100px; } } @media screen { … Read more
You can compile expression trees to use void methods without any arguments as event handlers for events of any type. To accommodate other event handler types, you have to map the event handler’s parameters to the events somehow. using System; using System.Linq; using System.Linq.Expressions; using System.Reflection; class ExampleEventArgs : EventArgs { public int IntArg {get; … Read more
According to this article Windows sends the WM_DISPLAYCHANGE message when display resolution changes and also when a display is added or removed. If you need to react to desktop size changes due to monitor addition or removal, you can do so in the handler of this message. The LPARAM gives you the new resolution of … Read more