Dynamic objects without identifier...

[wysota]

QHash<int, QWidget*> and qobject_cast to determine the type.

[Bill]

Hi,
Thanks for your reply. I've decided to use a QObjectList which I populate in the if statements, where additionally I set the proper object names used later to identify the object "type" (image, string etc.). Works pretty well.

Regards,
Bill

[wysota]

It might be better to use QList<QWidget*> - it's better for you than QList<QObject*> because you can use the widget interface without any casting. If you want to stick with QObjectList, then you don't need it at all - at any time you can call QObject::children() on the parent widget (or the layout - you'd have to check that out) that will return you a QObjectList of its children.

[axeljaeger]

QList<QString, QMetaObject>. Store the classes meta objects and then use QMetaObject::newInstance to create new instances.

[Bill]

Hi,
Thanks for the QMetaObject hint - I'll look at it in detail...
Another problem I have is that I create an object and add it to a QScrollArea like this:

scrollAreaWidgetContents->layout()->addWidget(date);

scrollAreaWidgetContents->layout()->addWidget(date);

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What would be the best way to remove objects from the QScrollArea, which have a pointer stored in a QList<QWidget*>?
I've tried

for(int i=0;i<formElements.length();++i) scrollAreaWidgetContents->layout()->removeWidget(formElements.at(i));

for(int i=0;i<formElements.length();++i) scrollAreaWidgetContents->layout()->removeWidget(formElements.at(i));

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but end up with a segfault.

Thanks for your help,
Reagards,
Bill

[Bill]

I think I found a solution.
After a bit of RTFM,

while(!formElements.isEmpty()) delete formElements.takeFirst();

while(!formElements.isEmpty()) delete formElements.takeFirst();

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works well.

Regards,
Bill

[axeljaeger]

Does qDeleteAll works as well?