IPersistFileFormat Interface

Obtains file format information about items that require saving, and enables the programmatic loading or saving of an object in a format specified by the user.

Namespace:  Microsoft.VisualStudio.Shell.Interop
Assembly:  Microsoft.VisualStudio.Shell.Interop (in Microsoft.VisualStudio.Shell.Interop.dll)

Syntax

声明
<GuidAttribute("3AFAE242-B530-11D0-8199-00A0C91BBEE3")> _
<InterfaceTypeAttribute()> _
Public Interface IPersistFileFormat _
    Inherits IPersist
用法
Dim instance As IPersistFileFormat
[GuidAttribute("3AFAE242-B530-11D0-8199-00A0C91BBEE3")]
[InterfaceTypeAttribute()]
public interface IPersistFileFormat : IPersist
[GuidAttribute(L"3AFAE242-B530-11D0-8199-00A0C91BBEE3")]
[InterfaceTypeAttribute()]
public interface class IPersistFileFormat : IPersist
[<GuidAttribute("3AFAE242-B530-11D0-8199-00A0C91BBEE3")>]
[<InterfaceTypeAttribute()>]
type IPersistFileFormat =  
    interface
        interface IPersist
    end
public interface IPersistFileFormat extends IPersist

Remarks

The IPersistFileFormat interface is based on the standard IPersistFile interface and augments it in the following ways:

  • Shows you how to properly specify a new, untitled file to the InitNew method.

  • Shows you that the file should be opened as a read-only file.

  • Eliminates the unnecessary Save As prompt string from GetCurFile.

  • Returns an error code when Save(null) is called on an untitled object.

IPersistFileFormat provides enough information for the client of an object to implement the Save As dialog box—that is, to fill in the Save As Type drop-down list and manage the initial file extension but still give complete flexibility to the object. Thus, the object owns all aspects of its file and format, including the name of its format.

Notes to Implementers

When saving documents or document editors that use the standard Save As dialog box implementation of the environment.

See Also

Reference

IPersistFileFormat Members

Microsoft.VisualStudio.Shell.Interop Namespace