I'm building a system that requires file-uploading, and I'm wondering how I can indicate that the browser windows supports drag and drop. Since the feature is new to modern browsers, there's no user expectation of the ability.
I thought about this:
[UPLOAD BUTTON]
|---------------------------|
|--Drag files here----------|
|---------------------------|
|---------------------------|
with a color effect on the drag area, but that just seems inelegant. I could tooltip the upload button, but that might get annoying if it appears too quickly, and it could be useless if it doesn't appear quickly enough.
Thoughts?