Getting the value from a custom input widget

Getting the value from a custom input widget

By : harshavardhan
Date : November 22 2020, 04:01 AM
I think the issue was by ths following , You need to provide onChanged and other events in your custom widget, even if you are just providing these to the underlying TextField. In other words, you need to pass the onChanged function down through your custom widget.
For example:
code :
MyAwesomeTextField extends StatelessWidget {
  /// Callback for being notified of changes to the text field
  /// This should have a proper type, I'm just using Function for simplicity
  final Function onChanged; 

  // Make the onChanged property settable through the constructor

  Widget build(BuildContext context) {
    // Construct your widget tree, and pass your onChanged function through
    return TextField(onChanged: this.onChanged);
MyCustomWidget(onChanged: (value) => print(value) )

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Django custom (multi)widget input validation

Django custom (multi)widget input validation

By : user2638431
Date : March 29 2020, 07:55 AM
seems to work fine You validate your form fields just like any other fields, implementing the clean_fieldname method in your form. If your validation logic spreads across many form fields (which is nto the same as many widgets!) you put it in your form's clean() method.
Custom CSS classes for SQLFORM widget input in web2py

Custom CSS classes for SQLFORM widget input in web2py

By : anusha j
Date : March 29 2020, 07:55 AM
it fixes the issue Note, all widgets already have a class named for the type of widget (e.g., "string", "integer", "date", etc.) as well as an id of the form "tablename_fieldname", so you might be able to make use of those in your CSS without needing to add custom classes. See here for more details.
If you do need to customize the classes, note that web2py FORM and SQLFORM objects and their sub-components are HTML helper objects and can be manipulated like any HTML helpers. In particular, helpers act as lists with respect to their components and dictionaries with respect to their attributes (an input class is an attribute of the INPUT object). So, you can do something like this, either in the controller that creates the form or in the view:
code :
form.custom.widget.field_name['_class'] = 'bla bla'
for input in form.elements('input', _class='string'):
    input['_class'] = 'my-string'
Field('target_user', 'string', widget = lambda field, value:
    SQLFORM.widgets.string.widget(field, value, _class='my-string'))
My wordpress custom widget mess the entire site, one widget work, add more widget and ruin anything

My wordpress custom widget mess the entire site, one widget work, add more widget and ruin anything

By : user2017579
Date : March 29 2020, 07:55 AM
wish helps you You should be getting a php error if you do the above. Basically you are declaring a class with the same name twice (same effect as declaring a function twice) Just rename the 2nd class.
Also you are missing the code to register the widgets, i assume it is there as something is changing. If not, add it in, its in the codex as well.
Dojo1.9: Custom widget inherited from another custom widget template string update not reflected

Dojo1.9: Custom widget inherited from another custom widget template string update not reflected

By : user3057935
Date : March 29 2020, 07:55 AM
To fix this issue data-dojo-attach-point (which you should use for 1.6+ instead of dojoAttachPoint) allows you to have handles for dom nodes in your template.. It is parsed by _TemplatedMixin's buildRendering(), so it will be available in your buildRendering method just after this.inherited line.
You can not set data-dojo-attach-point using setAttribute, it can only be defined in templates to be parsed by TemplatedMixin. If you need your child widget to add some markup in addition to what there is in its parent's template, you can define a variable in your parent's markup, and overwrite it in your child widget:
code :
<div data-dojo-attach-point="widget">
    <div data-dojo-attach-point="title">${name}</div>
    <div data-dojo-attach-point="dnmschart"></div>
], function (declare, AbstractWidget) {
return declare("my.widget.view.AbstractChart", [AbstractWidget], {

    buildRendering: function(){
        this.childMarkup = '<div data-dojo-attach-point="gridPlaceHolder"></div>';
Handle input events in custom Qt widget

Handle input events in custom Qt widget

By : Anil Dwarakanath
Date : March 29 2020, 07:55 AM
this one helps. The EDIT section in the question is the actual correct answer. It was not working at first, but that was because of a different issue.
So a QAbstractNativeEventFilter is needed:
code :
class MyEventFilter : public QAbstractNativeEventFilter

    bool nativeEventFilter(const QByteArray &eventType, void *message, long* res) override
        if (eventType == "windows_generic_MSG") {
            res = (long*)WndProc(((MSG*)message)->hwnd, ((MSG*)message)->message, ((MSG*)message)->wParam, ((MSG*)message)->lParam);
        return false;
int main(int argc, char *argv[])
    QApplication a(argc, argv);
    AGK_QT w;

    a.installNativeEventFilter(new MyEventFilter());

    return a.exec();
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