Does PyQt5 have QMap?

darrenleeleelee1

Qt has QMap, I wonder does PyQt5 have QMap also, I can't find out.

jsulm

@darrenleeleelee1 Python already has a map data structure

darrenleeleelee1

@jsulm You mean dictionay right?
Can I QMap<int,QVariant> implement this in PyQt to get the int and item mapping?

jsulm

@darrenleeleelee1 said in Does PyQt5 have QMap?:

Can I QMap<int,QVariant> implement this in PyQt to get the int and item mapping?

Yes, why not? Just try.

darrenleeleelee1

@jsulm Ok, I try it now.Thanks.

darrenleeleelee1

@jsulm Sorry, I got stuck.
Can you give me a hint?
I want to translate this from c++ to python

QMap<int,QVariant> modelData;
for(;;){
    mimeReader.startTransaction();
    mimeReader >> row >> col >> modelData;
    if(!mimeReader.commitTransaction())
        break;
    const auto userRoleIter = modelData.constFind(Qt::UserRole);
    if(userRoleIter!=modelData.cend())
        doSomethingWithModule(userRoleIter->value<Module>());
}

I translate like this, but I not sure how to fix.

def dragEnterEvent(self, event: QtGui.QDragEnterEvent) -> None:
        super().dragEnterEvent(event)
        print(type(event.mimeData().data('application/x-qabstractitemmodeldatalist')))
        mimeReader = QDataStream(event.mimeData().data('application/x-qabstractitemmodeldatalist'))
        row = 0
        col = QtCore.QVariant
        while(True):
            mimeReader.startTransaction()
            mimeReader >> row >> col
            print(row, col)
            if(not mimeReader.commitTransaction()):
                break

full c++ code is here

void dropEvent(QGraphicsSceneDragDropEvent *event){
	const QByteArray mimeData = event->mimeData()->data("application/x-qabstractitemmodeldatalist");
	QDataStream mimeReader(mimeData);
	int row,col;
	QMap<int,QVariant> modelData;
	for(;;){
		mimeReader.startTransaction();
		mimeReader >> row >> col >> modelData;
		if(!mimeReader.commitTransaction())
			break;
		const auto userRoleIter = modelData.constFind(Qt::UserRole);
		if(userRoleIter!=modelData.cend())
			doSomethingWithModule(userRoleIter->value<Module>());
	}
}

SGaist

Hi,

What issue do you have ?
What do you expect ?
What do you get ?