IAppManager.LaunchDoc()

Description:

The LaunchDoc method launches an application based on a given document. This method automatically determines which application to launch for the specified document.

The application can be launched as chained (embedded) or standalone. For more information about embedded and standalone applications, see section Accessing and launching installed applications.

This method can be called both synchronously and asynchronously.

Syntax:

For synchronous calls:

result = so.IAppManager.LaunchDoc(criteria);

For asynchronous calls:

result = so.IAppManager.LaunchDoc(criteria, callback);

Arguments:

criteria:

This is an object that specifies which application to launch. For more information about the object properties and how to define them, see section Criteria for launching an application.
callback:

The callback argument is the name of the method that is executed when an asynchronous LaunchDoc call has status information to return. You must define this method separately. Follow the instructions in section Defining the callback handler for an asynchronous method to define the callback method.

This argument is used only with an asynchronous LaunchDoc call.

Return value:

If synchronous, the LaunchDoc method returns an object that contains the name of the newly created document, if applicable, an error code, and an error message.

**Table:** Return value properties for a synchronous LaunchDoc
Property	Description	Value
`[result.ReturnValue]`	This is a string that contains the name of the newly created document, if any. This property is optional. A new document is created only when both of the following are true: `criteria.MIMEType` is specified as input. The launched application creates a new document. A document name is never returned when `criteria.Document` is specified as input.
`result.ErrorCode`	This is a number that specifies a predefined error code.	See Service API error codes.
`result.ErrorMessage`	This is a text string that describes the error.	See AppManager Service API error messages.

If asynchronous, the LaunchDoc method returns an object that contains the initial return value for the asynchronous call it started (see the following table). The actual result information is returned by the callback method in the ReturnValue property of its result object. The returned information is described in the preceding table.

Note: If Cancel is called on an ongoing asynchronous request, LaunchDoc does not return a notification when the launched application terminates.

**Table:** Return value properties for an asynchronous LaunchDoc
Property	Description	Value
`result.TransactionID`	This is a number used as an identification to match transactions started with the asynchronous `LaunchDoc` call to one or more calls it generates to `callback`.
`result.ErrorCode`	This is a number that specifies a predefined error code.	See Service API error codes.
`result.ErrorMessage`	This is a text string that describes the error.	See AppManager Service API error messages.

Example code:

For the complete source of a sample widget that demonstrates how to use this Service API, see the full example.