components | 易学教程

Joomla component not appearing in the menu item types

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问题 I just followed the joomla tutorials on how to create the "perfect" MVC joomla component. However, my problem is that I don't know yet how to assign it to a menu. I thought that my component would then just show up when I select a "menu item type", but my component is not on this list. I've made some research on Google, but I cannot find the answer... Do I have to create a metadata.xml file or something similar ? Thanks in advance for your answers !! 回答1: To create "views" for your component,

Positioning Hints for Components in Delphi

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问题 Using Delphi XE6, I am creating a TdateTimePicker-like control, but for a couple of reasons, I am using a TButtonedEdit which has a TMonthCalendar "embedded" within it. A full bare-bones demo is: I have got it going as desired with the month calendar being SHOWn when the right button is clicked ( with Style=WS_POPUP ) and I HIDE it when a selection is made, the user navigates away, ESCapes etc. unit DateEditBare1; interface uses Winapi.Windows, Winapi.Messages, System.SysUtils, System

Angular 2 error: Unhandled Promise rejection: Template parse errors: More than one component:

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问题 I developed a an Angular2 application using the old beta a few months back> I am currently moving this other to a fresh build of the newest (RC5 version) so far with no hitches. That was until I have been getting the following error: zone.js:484 Unhandled Promise rejection: Template parse errors: More than one component: ProductComponent,OverlayComponent ("'noscroll': hideBody}"> I have a sub-component product-component which is included as a sub-component of app-component. I include both of

Share data across different components in Vuejs

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问题 Given the mini Vuejs app down below. When I click one of my increment/decrement buttons, the value within the "counter" component updates but the value inside "alphabet" doesn't. Any ideas on how can I share the same data across those two components so that they automatically update ? var counter = Vue.extend({ props: ['start'], template: '#counter', data: function() { return { value: this.start } }, methods: { increment: function() { this.value++ }, decrement: function() { this.value-- } } }

Angular 2 - Lifecycle hooks for lazy loaded modules

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问题 I am in the process of developing an application using lazy loaded Angular modules. I have a simple question: Is it possible to catch an event when a module is loaded? For example OnInit. This link explains life cycle hooks but it is only for components: Lifecycle hooks for components I cant find any documentation that explains how to hook in for modules. Does someone have an idea of how to solve this? Thanks 回答1: The constructor of the lazy loaded module should do that @NgModule({...})

Good GIS Software or Components for Windows PC in .NET? [closed]

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问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed last year . Last week i searched for good free or opensource solutions and component for GIS (Geographical Information Systems) I founded some system but no one fill my requirements SharpMap is very buggy software Gmap.net is very slow MapWindow have a very complex structure and is very buggy. I founded uDIG but is in java, i

check if a component is a child or ancestor of another component ReactJS

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I am creating a ReactJS Component with an unknown number of children and ancestors, and when a certain event occurs on one of the ancestors I the parent component should know of it. my first approach is to use redux and send the child component with a redux action, and then main parent componetnts will be alerted and will check if the Componetnt sent was one of its ancestors. but, can a parent reactJS component know in someway if another component is one of its ancestors? The parent can define a function in the context, Children can then call this function: Parent: childContextTypes: {

Retrieving the COM class factory for component with CLSID {000209FF-0000-0000-C000-000000000046} failed due to the following error: 8000401a

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问题 Retrieving the COM class factory for component with CLSID {000209FF-0000-0000-C000-000000000046} failed due to the following error: 8000401a. We are getting above said error from our production server which is hosted in SharePoint farm environment, where as not able to reproduce the same issue from our staging server which is standalone server. I hope, the above said error will be throwing when Microsoft.Office.Word component accessing from remote machine. I've updated all users under "Launch

ANGULAR 4 Base64 Upload Component

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问题 I am new to Angular. I am using Angular 4. Where there is a requirement to send the base64 Image as one of the model member to the web api. Is there a Angular component or directive for the that would bind the base64 to the said model? Appreciate and Thank you for the help. 回答1: You can upload image and store it as base64 encoded. In your template add this <div class="image-upload"> <img [src]="imageSrc" style="max-width:300px;max-height:300px"/> <input name="imageUrl" type="file" accept=

Error: Adjacent JSX elements must be wrapped in an enclosing tag

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问题 I am trying to print props of a react component but getting an error. Please help: Snippet:  <html> <head> <script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.4.2/react.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.4.2/react-dom.min.js"></script> <script src="http://fb. me/JSXTransformer-0.12.1.js"></script>  </head> <body> <div id="div1"></div> <script type=