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QDrop allows drag and drop of desktop files and folders into 4D forms. It lets you build intuitive, user-friendly interfaces for all kinds of 4D database applications. With QDrop your software becomes simpler and more appealing to end-users.

QDrop offers a plug-in area that you can put on any 4D form and use as a drop zone. The QDrop area can be made big enough to cover the entire form window, or it can be placed behind specific form objects, other plug-in areas, and so on. QDrop can easily revamp those parts of a database that involve working with files and folders, and is particularly suited to image databases.

Each QDrop area can be configured to accept specific classes of files, using either filename extensions (on both platforms), or Uniform Type Identifiers (only on MacOS X). Note that 4-character MacOS filetypes are deprecated and they should no longer be used.

Instead of specifying individual file extensions, QDrop provides special constants called "magic file types" which collectively represent entire classes of files. Magic file types are:

* any* denotes that all files are accepted
* fold denotes that folders are accepted
* qti* means that all images understood by QuickTime are accepted (requires QuickTime)
* qtm* accepts all movie formats understood by QuickTime (requires QuickTime)