Qt-interest Archive, June 2007
Qt 4.3: Dragging files onto the Desktop?
Message 1 in thread
Hi all,
I'm working on a cross-platform remote-file-browser app, similar in style to
"Fetch" on the Mac: It logs in to a remote server, shows you a list of files
on the remote server's hard drive, and lets you upload files to the server or
download them from the server to your client's hard drive.
This all works well... now I'm working on adding drag-and-drop support to the
GUI. Currently I can drag a file from a system folder on my client computer
and drop it into my app's QTreeWidget, and an upload of that file will begin.
That works fine too.
What I'd like to add next is add the ability to drag a file *out* of my app's
QTreeWidget and onto a system folder, at which point my application would
begin a download of that file from the server into the dragged-into folder.
The problem is, I can't see how to implement this... since the system folder
isn't part of my Qt app, I can't just subclass it and reimplement
dragEnterEvent() and dropEvent() on it. And since the files on the server
are often quite large (e.g. gigabytes), it's impractical for me to download
the file's contents in advance and include them in the QDrag object at the
start of the drag. It seems like I would need to get some notification when
the drag finished, and query the file path represented by the folder where
the drag was dropped.
Is there any way for me to do what I want using Qt 4.3.0?
Thanks,
Jeremy Friesner
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