问题
I'm implementing dragging a virtual file out of a website and onto the desktop with an activex control.
How do I create an IStream on my http url, so Windows can execute the drop?
The example I'm looking at uses SHCreateStreamOnFile to copy a local file; there must be an analogous function for other types of streams like http file download.
回答1:
How about using the URL Moniker Functions. You can use the URLDownloadToFile (blocking function), or URLOpenPullStream (asynchronous).
来源：https://stackoverflow.com/questions/3168145/download-a-file-using-windows-istream