Difference between revisions of "Documentation/DevGuide/ProUNO/Bridge/Mapping of Type"
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{{DISPLAYTITLE:Mapping of Type}} | {{DISPLAYTITLE:Mapping of Type}} | ||
Since there is no counterpart to the UNO type among the Automation types, it is mapped to an object. The object implements <code>IDispatch</code> and a private tagging interface that is known to the bridge. Therefore, whenever an object is passed in a call to a UNO object the bridge can determine whether it represents a type. To obtain a type one calls <code>Bridge_CreateType</code> on the service manager object and provides the name of the type. For example: | Since there is no counterpart to the UNO type among the Automation types, it is mapped to an object. The object implements <code>IDispatch</code> and a private tagging interface that is known to the bridge. Therefore, whenever an object is passed in a call to a UNO object the bridge can determine whether it represents a type. To obtain a type one calls <code>Bridge_CreateType</code> on the service manager object and provides the name of the type. For example: | ||
| − | + | <source lang="vb"> | |
'Visual Basic | 'Visual Basic | ||
Dim objType | Dim objType | ||
Set objType = objServiceManager.Bridge_CreateType(“com.sun.star.uno.XInterface”) | Set objType = objServiceManager.Bridge_CreateType(“com.sun.star.uno.XInterface”) | ||
| + | </source> | ||
In case the provided argument does not represent a valid type, the call produces an error. | In case the provided argument does not represent a valid type, the call produces an error. | ||
If a UNO method returns a type, either as return value or out - parameter, then it is automatically converted to an object. | If a UNO method returns a type, either as return value or out - parameter, then it is automatically converted to an object. | ||
| − | + | <source lang="idl"> | |
//UNOIDL | //UNOIDL | ||
type foo([out] type t) | type foo([out] type t) | ||
| − | + | </source> | |
| + | <source lang="vb"> | ||
'Visual Basic | 'Visual Basic | ||
| Line 28: | Line 30: | ||
Dim objReturn As Object | Dim objReturn As Object | ||
Set objReturn = object.foo(objParam) | Set objReturn = object.foo(objParam) | ||
| − | + | </source> | |
{{PDL1}} | {{PDL1}} | ||
[[Category:Documentation/Developer's Guide/Professional UNO]] | [[Category:Documentation/Developer's Guide/Professional UNO]] | ||
Revision as of 12:52, 22 October 2009
Since there is no counterpart to the UNO type among the Automation types, it is mapped to an object. The object implements IDispatch and a private tagging interface that is known to the bridge. Therefore, whenever an object is passed in a call to a UNO object the bridge can determine whether it represents a type. To obtain a type one calls Bridge_CreateType on the service manager object and provides the name of the type. For example:
'Visual Basic Dim objType Set objType = objServiceManager.Bridge_CreateType(“com.sun.star.uno.XInterface”)
In case the provided argument does not represent a valid type, the call produces an error.
If a UNO method returns a type, either as return value or out - parameter, then it is automatically converted to an object.
//UNOIDL type foo([out] type t)
'Visual Basic Dim objParam As Object Dim objReturn As Object Set objReturn = object.foo(objParam)
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