event-handling

JSF ValueChangeListener not working

由 余生颓废 提交于 2021-02-19 03:32:30
问题 I am learning how to use events with JSF. For some reason, the program is not changing the value in the text field when I change the value of the dropdown menu. The page loads and shows "Germany", but does not change the text field to "DE". Any suggestions? Index.xhtml: <?xml version='1.0' encoding='UTF-8' ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:f="http://java

JSF ValueChangeListener not working

由 爷，独闯天下 提交于 2021-02-19 03:32:04
问题 I am learning how to use events with JSF. For some reason, the program is not changing the value in the text field when I change the value of the dropdown menu. The page loads and shows "Germany", but does not change the text field to "DE". Any suggestions? Index.xhtml: <?xml version='1.0' encoding='UTF-8' ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:f="http://java

OS X alternative to eventfd

由 孤街浪徒 提交于 2021-02-19 01:42:29
问题 eventfd is Linux-specific. I need to port a library written on Linux which makes use of this event notification system to OS X. Is there a way to accomplish this? 回答1: Two options are a pipe and kqueue 's EVFILT_USER . It depends on how exactly eventfd is being used. 来源： https://stackoverflow.com/questions/26603615/os-x-alternative-to-eventfd

event handler for WebBrowser control onpropertychange events - sender and e objects are null

由 旧城冷巷雨未停 提交于 2021-02-16 20:26:11
问题 In C#, I am running the WebBrowser (WB) control in a server-side thread and want to monitor (listen) for "onpropertychange" events. I can successfully attach a .NET delegate signature method that is executed when a property changes, but the sender and e objects are both null in every call to qEventHndlr, therefore, I don't know which property changed to fire the event. el is an HTMLElement that is iterated in a foreach loop to attach the eventhandler to each element to monitor (listen). el

event handler for WebBrowser control onpropertychange events - sender and e objects are null

由 故事扮演 提交于 2021-02-16 20:26:06
问题 In C#, I am running the WebBrowser (WB) control in a server-side thread and want to monitor (listen) for "onpropertychange" events. I can successfully attach a .NET delegate signature method that is executed when a property changes, but the sender and e objects are both null in every call to qEventHndlr, therefore, I don't know which property changed to fire the event. el is an HTMLElement that is iterated in a foreach loop to attach the eventhandler to each element to monitor (listen). el

MouseDragged & MouseMoved not working in Java Applet

由 谁说胖子不能爱 提交于 2021-02-16 16:25:30
问题 I'm currently working on a map generation program for a game I'm creating, and so I'm trying to be able to modify the individual tiles on the map using my mouse. I've successfully implemented the ability to click on a tile and change its value (from say a 4 way tile to a 2 way tile), but I am having trouble getting mouseDragged to work. According to the Java docs I've done the correct implementation of the mouseDragged interface into my MouseEventHandler, but I when I drag my mouse and move

Is it possible to avoid multiple button clicks on a Winform?

由 我的梦境 提交于 2021-02-12 11:18:42
问题 Suppose you have a button on a form that counts to 1000 in a textbox and then clears it. If I quickly click the button five times (in runtime) the Click event handler will be called 5 times and I will see the count to 1000 five times. Is it possible to disable other clicks on that button while the first click is counting? Note: Disabling the button in the first statement of the click handler and then re-enabling at the end does not work. Also, unsubscribing/subscribing to the click event (the

ReactJs : DropDown Event Value gets set to empty string despite the event having been triggered correctly

由 ∥☆過路亽．° 提交于 2021-02-11 18:18:14
问题 OperationSavDetails.js class OperationSavDetails extends Component { constructor(props) { super(props); this.state = { statusUpdateDropDownOpen: false, statusUpdateDropDownValue: "Mettre à jour le status de l'opération SAV" }; this.changeStatusUpdateDropDownValue = this.changeStatusUpdateDropDownValue.bind( this ); this.toggleStatusUpdateDropDown = this.toggleStatusUpdateDropDown.bind( this ); } changeStatusUpdateDropDownValue(e) { console.log("e.currentTarget.textContent"); console.log(e

ReactJs : DropDown Event Value gets set to empty string despite the event having been triggered correctly

由 本秂侑毒 提交于 2021-02-11 18:17:14
问题 OperationSavDetails.js class OperationSavDetails extends Component { constructor(props) { super(props); this.state = { statusUpdateDropDownOpen: false, statusUpdateDropDownValue: "Mettre à jour le status de l'opération SAV" }; this.changeStatusUpdateDropDownValue = this.changeStatusUpdateDropDownValue.bind( this ); this.toggleStatusUpdateDropDown = this.toggleStatusUpdateDropDown.bind( this ); } changeStatusUpdateDropDownValue(e) { console.log("e.currentTarget.textContent"); console.log(e

Combining form onsubmit parameter with jquery submit event handler

由 China☆狼群 提交于 2021-02-11 16:20:19
问题 I have a form that is being generated by legacy back-end code that, for a variety of reasons, I can't change. The form is straightforward HTML: <form action="#" id="theForm" onsubmit="return check_theForm(); method="post"> <!-- fields go here --> </form> On submission the onsubmit parameter fires to verify that all compulsory field have been filled in, using the check_theform() function which contains "plain vanilla" javascript (i.e. no jQuery code). In other words, basic stuff. I'm now
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