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Sets the script called when a download is about to begin.

Component Version macOS Windows Linux Server iOS SDK
WebDownloadDelegate 2.7 ✅ Yes ❌ No ❌ No ❌ No ✅ Yes
MBS( "WebDownloadDelegate.SetBeginDownloadHandler"; FileName; ScriptName )   More


Parameter Description Example
FileName The name of the FileMaker File that contains the script "MyDatabase.fp7"
ScriptName The name of the script to run "DownloadBegin"


Returns OK or error.


Sets the script called when a download is about to begin.
You can show progress dialog if you like. Properties are not yet set, so you can only show that download started and wait for other script calls.
The plugin only supports one download at a time. Still you could have several, but functions like WebDownloadDelegate.DownloadedLength will not work correct.

With plugin version 6.0 or newer the script name can be a script ID number. In that case the plugin queries the script name for the given script ID. This allows to call scripts by ID and avoid problems if scripts are later renamed.

Notice: FileMaker 19.2 adds a fmplugin extended privileges. If you have such an extended privileges to allow the plugin to trigger scripts, you need to grant permissions for it. If such a privilege is not defined, the plugin is allowed to trigger scripts. See FileMaker product documentation for details.


Registers fail handler:

MBS( "WebDownloadDelegate.SetBeginDownloadHandler"; Get ( FileName ); "DownloadBegin")

See also

Release notes

Example Databases

Blog Entries

This function is free to use.

Created 18th August 2014, last changed 26th August 2023

WebDownloadDelegate.Path - WebDownloadDelegate.SetDidDownloadHandler