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How to switch focus automatically when max length reached in QML TextField?

By : Fadi Al-Taher
Date : October 15 2020, 08:10 AM
may help you . You want to react when the text changes inside the TextInput, so in the body of the textChanged signal handler:
code :
TextField {
    width: 28
    height: 50
    color: "green"
    onTextChanged: {
        if (text.length === 4) {

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How to switch text boxes focus when third digit was reached?

By : user3889101
Date : March 29 2020, 07:55 AM
Hope this helps Once txtF1.Text.Length == 3, you can use txtF2.Focus() in order to 'move the cursor' to the 2nd textbox
code :
private void NextField(object sender, EventArgs e)
    if (txtF1.Text.Length == 3) // Textbox contains 3 characters, you DO NEED to validate your input.

Automatically stretch or shrink `<textField>` depending on text length?

By : Kanchan Sharma
Date : March 29 2020, 07:55 AM
hop of those help? I assume you are talking about stretch vertically.
In that case isStretchWithOverflow is exactly what you need.

Change focus to next input field when max length is reached

By : temper
Date : March 29 2020, 07:55 AM
it helps some times You can use JavaScript and RichFaces's #{rich:element} expression like below.
code :
        <h:inputText id="fechaI" value="" maxlength="2" size="2" onkeyup="if(this.value.length >= this.getAttribute('maxlength')) {#{rich:element('mesI')}.focus()}"/>
        <h:inputText id="mesI" value="" maxlength="2" size="2" onkeyup="if(this.value.length >= this.getAttribute('maxlength')) {#{rich:element('anoI')}.focus()}"/>
        <h:inputText id="anoI" value="" maxlength="4" size="4"/>

Jquery Mobile - click on popup(any region of header and content) automatically focus textfield

By : Vasanth
Date : March 29 2020, 07:55 AM
Does that help This is by design, but you can adopt the "trick" to add another input element positioned outside the popup, then the focus goes to the whole popup window, which looks also somehow not so bad:
code :
.ui-popup {
  padding: 1em;
  min-width: 200px;

.hidden {
<!DOCTYPE html>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
  <link rel="stylesheet" href="https://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.css">
  <script src="https://code.jquery.com/jquery-1.11.2.min.js"></script>
  <script type="text/javascript">
    $(document).on('mobileinit', function() {
      $.mobile.ignoreContentEnabled = true;
  <script src="https://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.min.js"></script>
  <div data-role="page" id="page-one">
    <div data-role="header" data-position="fixed">
    <div data-role="content">
      <a href="#popup" data-rel="popup" class="ui-btn">Popup</a>
    <div data-role="footer" data-position="fixed">
    <div id="popup" data-role="popup" data-history="false" data-dismissible='false'>
      <input data-enhanced="true" type="button" class="hidden">
        <input type="text" id="usr" name="usr" value="">
        <a href="#" class="ui-btn" data-rel="back">Cancel</a>

COCOA - How to make textfield doesn't allow text entry when max length is reached in NSTextfield?

By : Amir Valdman
Date : March 29 2020, 07:55 AM
hop of those help? At its simplest, all you need is to subclass Formatter and override 3 methods:
code :
class MyFormatter: Formatter {
    var maxLength = Int.max

    override func string(for obj: Any?) -> String? {
        return obj as? String

    override func getObjectValue(_ obj: AutoreleasingUnsafeMutablePointer<AnyObject?>?, for string: String, errorDescription error: AutoreleasingUnsafeMutablePointer<NSString?>?) -> Bool {
        obj?.pointee = string as NSString
        return true

    override func isPartialStringValid(_ partialString: String, newEditingString newString: AutoreleasingUnsafeMutablePointer<NSString?>?, errorDescription error: AutoreleasingUnsafeMutablePointer<NSString?>?) -> Bool {
        return partialString.count <= maxLength
let formatter = MyFormatter()
formatter.maxLength = 10

textField.formatter = formatter
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