qlineedit* peditor = new Qlineedit (m_strtext);Peditor->resize (...);Peditor->move (...);Scene ()->addwidget (peditor);Peditor->setfocus ();Note the order of the two statements in the red font. If reversed, there will be a "qlineedit how to achieve the focus when the input" problem, because focus is immediately out again, resulting in non-input.In fact, it is also very good understanding: must be placed in
Effect Chart:
Specific implementation:
1, TEXTAREA label content
Copy Code code as follows:
2, initialization so that click the Add button, content display can enter up to 50 words
Copy Code code as follows:
document.getElementById ("Introduction"). Style.color= "Gray";
3. js Script
Copy Code code as follows:
var Textarea=document.getelementbyid (ID);
Textarea.value= "";
Textarea.style.color= "BLACK";
}
function Lostaddfoc
The swing based GUI also has some legacy issues, including how to manage focus (which has the priority of receiving keyboard input), how to determine which component has the focus, and how to traverse the focus from one component to the next. Because swing is built on the Abstract Window Toolkit (AWT), management of component
Input loses focus and gets focus jquery Focus event plugin,The text disappears when the mouse clicks in the search box .When we do the site often use the search box to get focus and lose focus of the event, because lazy, every time to write very annoying, so once and for all
Recently, because of the project needs, the focus of the edittext needs to be shifted to Lineralayout: After you have entered the EditText, click the Enter key or press OK on other embedded Android devices to get the Lineralayout click event.This method can be called Initlistener in the OnCreate method; 1 /**2 * Listen to the focus of the EditText, click the Enter key (or press OK), lose
Qlineedit does not have a signal to focus and lose focus, you need to customize an input box that inherits from Qlineedit, and rewrite the focusinevent and focusoutevent events//Mylineedit_h#ifndef Mylineedit_h#defineMylineedit_h#includeclassMylineedit: Publicqlineedit{Q_object Public: Mylineedit (Qwidget*parent=0); ~Mylineedit ();protected: Virtual voidFocusinevent (Qfocusevent *e); Virtual voidFocus
To the photographic enthusiasts for detailed analysis to share the Canon G16 camera focusing mode and manual focus problem.
Analytical sharing:
Canon G16 What is the focus of the way
Canon G16 support AF, manual focus, touch screen selection focus, face priority focus
First step: Go to the Enterprise homepage, click the "Manage" button of the focus area above the bar in the main page, then pop up the focus Area Management dialog box;
The second step: Focus area management can manage the focus picture or focus video, click the correspondi
input loses focus and gets focus
When the mouse clicks in the search box, the text disappears.
We often use the search box to get focus and lose focus when we do the site, because lazy, every time to write very annoying, so that once and for all, encounter similar situation to call the OK
Related JS code:
Copy
For the element focus event, we can use the focus function of jquery (), Blur ().
Focus (): used in the same way as onfocus in JavaScript, when it is focused.
Such as:
The code is as follows
Copy Code
$ ("P"). focus (); or $ ("P"). Focus (FN)
Function implementation:
When users enter text, if they can highlight the text box that is being entered, it will be more humane, and then use jquery to implement it.
Implementation principle:
After the document is loaded (ready), add the focus and blur events for input, and make additions and deletions to the styles.
code example:
Copy Code code as follows:
Depending on the requirements of the test, after alert, position the cur
In our development process, especially when the user registration will have an effect, is the text box to get focus empty prompt, if the user did not enter information lost focus assignment on our prompt.
This jquery register text box to get focus empty, lost focus of the simple example of the assignment is sm
Copy Code code as follows:
$ (function () {
$ ("#input"). focus (function () {//#input换成你的input的ID
This writes the code that runs after the focus is obtained.
}). blur (function () {
$ (". Scroll-question"). CSS ("display", "none");
});
})
})
Live to 1.4 to support, the following ie,firefox are no problem
Copy Code code as follows:
The looks like this:
More than this JS focus diagram, JS multiple pages to put multiple focus on the example is a small series to share all the content, hope to give you a reference, but also hope that we support the cloud habitat community.
Focus problem summary, Focus Interview Summary1. If the focus button is used to obtain the focus, it is orange. If edittext is used to obtain the focus, it is a vertical line, and so on. 2. Focus indicates that a touch event may b
Summarize the focus management in Javascript in detail, and summarize the javascript focus
Focus Element
Which elements can get the focus? By default, only the form element can obtain the focus. Because only form elements can interact
There is also a way to get the
Using the focus () method directly in the lostfocus event of textbox in WPF will cause an endless loop.
There are two methods for correct use:
Method 1:
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->
Private
Void
Textbox3_lostfocus (
Object
Sender, routedeventargs E){
If
(Textbox3.text
! =
"
ABC
"
){
This
. Dispatcher. begininvoke (system. Windows. Threading. d
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.