focus

问题 How can I tell my TabControl to set the focus to its first TabItem, something like this: PSEUDO-CODE: ((TabItem)(MainTabControl.Children[0])).SetFocus(); 回答1: How about this? MainTabControl.SelectedIndex = 0; 回答2: this.tabControl1.SelectedTab = this.tabControl1.TabPages["tSummary"]; I've found it's usually a best practice to name your tabs and access it via the name so that if/when other people (or you) add to or subtact tabs as part of updating, you don't have to go through your code and

问题 Hi I am new to react and on my page load i need to give focus to a button. I am using functional component. I had seen example with class component and in that using componentDidMount and setting focus using refs. Here i am using functional component and no ComponentDidMount as well.. How can i set focus on functional component to a button on page load ? export const SubPageHeader=({prop})=>{ return( <div> <input type="button"/> } export default SubPageHeader 回答1: You can make use of

问题 Hi I am new to react and on my page load i need to give focus to a button. I am using functional component. I had seen example with class component and in that using componentDidMount and setting focus using refs. Here i am using functional component and no ComponentDidMount as well.. How can i set focus on functional component to a button on page load ? export const SubPageHeader=({prop})=>{ return( <div> <input type="button"/> } export default SubPageHeader 回答1: You can make use of

问题 I'm creating a form, that is following some WCAG guidelines. One of those is: G165: Using the default focus indicator for the platform so that high visibility default focus indicators will carry over. The summary of this rule is: Operating systems have a native indication of focus, which is available in many user agents. The default rendering of the focus indicator isn't always highly visible and may even be difficult to see against certain backgrounds. However, many platforms allow the user

问题 I'm creating a form, that is following some WCAG guidelines. One of those is: G165: Using the default focus indicator for the platform so that high visibility default focus indicators will carry over. The summary of this rule is: Operating systems have a native indication of focus, which is available in many user agents. The default rendering of the focus indicator isn't always highly visible and may even be difficult to see against certain backgrounds. However, many platforms allow the user

问题 I'm creating a form, that is following some WCAG guidelines. One of those is: G165: Using the default focus indicator for the platform so that high visibility default focus indicators will carry over. The summary of this rule is: Operating systems have a native indication of focus, which is available in many user agents. The default rendering of the focus indicator isn't always highly visible and may even be difficult to see against certain backgrounds. However, many platforms allow the user

问题 I'm creating a form, that is following some WCAG guidelines. One of those is: G165: Using the default focus indicator for the platform so that high visibility default focus indicators will carry over. The summary of this rule is: Operating systems have a native indication of focus, which is available in many user agents. The default rendering of the focus indicator isn't always highly visible and may even be difficult to see against certain backgrounds. However, many platforms allow the user

问题 I'm really looking for something that works with all current popular browsers (IE9, Chrome, Firefox, Safari) and all the way back to IE8. Although, I've been looking for a way to set focus on a Flash move object after it has lost focus, I've found that all historical ways of doing this fail. I assume it is yet another security issue. So, I'm now looking for how to monitor change events of some sort for the document.activeElement (though "change" doesn't really occur). 回答1: While @James's

问题 I am trying to focus a "search" textbox control in my windows forms application. This textbox is inside a user control, which is inside a panel which is inside a windows form (if it is important). I tried 3 methods which I could find: // 1 this.ActiveControl = myTextBox; // 2 myTextBox.Focus(); // 3 myTextBox.Select(); Neither of them seems to work. I mean for example when I try the first one, active control is really set to myTextBox, but when I try to write something on keyboard, textbox

问题 I'm building an Android app with React Native. How can you force a TextInput to "unFocus", meaning the cursor is blinking inside the text field. There are functions for isFocused() and onFocus() , but how do I actually get the text field to give up focus. You would think it does so automatically once I hit enter, but that's not the case. import React, {Component} from 'react'; import { AppRegistry, Text, View, StyleSheet, TextInput, TouchableOpacity} from 'react-native'; var SHA256 = require(