how can i drag a file from windows explorer or desktop to a Qt Widget(eg. QTreeWidget) ?

opengpu2

Chris Kawa

What is a Windows Resource Manager? I don't think you mean this cause it's a server feature and doesn't have any files in it.

opengpu2

modified, thank you !

Chris Kawa

There are basically 3 steps:

Enable drag&drop suport on your widget:

treeWidget->setAcceptDrops(true);

Override drag enter event and check if it carries urls:

void YourTreeWidget::dragEnterEvent(QDragEnterEvent * evt) {
    if(evt->mimeData()->hasUrls())
        evt->accept();
}

NOTE:The above accepts any kind of urls. If you want to be more specific you can inspect the urls to check if they are file/directory/web urls and accept only what you want.

Last step is to override drop event and act on the urls:

void YourTreeWidget::dropEvent(QDropEvent * evt) {
    auto urls = evt->mimeData()->urls();
    foreach(auto url, urls) {
        //do stuff to tree widget based on the file url
    }
}

opengpu2

thank you very much.
but how can i inspect the urls to check if they are file/directory/web urls ?
is there any examples or docs ?

opengpu2

and i found QString s1 = urls.at(i).path() return a path with "/" at the beginning.
but, QString s2 = urls.at(i).toLocalFile() return a path that fit the normal file path.
so should i use toLocalFile() ?

MayEnjoy

@opengpu2 said:

file/directory/web urls ?

You can use QUrl and QFileInfo

opengpu2

thank you, mainly file/directory/ :)