Add non-vararg wxFileTypeInfo ctor and various setters.

This allows to create wxFileTypeInfo objects in a more readable even if more
verbose way.

This should also incidentally fix the unit tests compilation with VC6 which
seems to have some existential troubles with the vararg ctor in debug DLL
build (only). Using the non-vararg ctor should hopefully make it happy and let
the unit tests pass with this compiler.

Also document wxFileTypeInfo class which wasn't documented at all.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65707 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/mimetype.h

@@ -334,3 +334,83 @@ public:
                          const MessageParameters& params) const;
 };
 
+/**
+    Container of information about wxFileType.
+
+    This class simply stores information associated with the file type. It
+    doesn't do anything on its own and is used only to allow constructing
+    wxFileType from it (instead of specifying all the constituent pieces
+    separately) and also with wxMimeTypesManager::AddFallbacks().
+ */
+class wxFileTypeInfo
+{
+public:
+    /**
+        Default constructor creates an invalid file type info object.
+
+        Such invalid/empty object should be used to terminate the list of file
+        types passed to wxMimeTypesManager::AddFallbacks().
+     */
+    wxFileTypeInfo();
+
+    /**
+        Constructor specifying just the MIME type name.
+
+        Use the various setter methods below to fully initialize the object.
+
+        @since 2.9.2
+     */
+    wxFileTypeInfo(const wxString& mimeType);
+
+    /**
+        Constructor allowing to specify all the fields at once.
+
+        This is a vararg constructor taking an arbitrary number of extensions
+        after the first four required parameters. The list must be terminated
+        by @c wxNullPtr, notice that @c NULL can't be used here in portable
+        code (C++0x @c nullptr can be used as well if your compiler supports
+        it).
+     */
+    wxFileTypeInfo(const wxString& mimeType,
+                   const wxString& openCmd,
+                   const wxString& printCmd,
+                   const wxString& description,
+                   const wxString& extension,
+                   ...);
+
+    /**
+        Add another extension associated with this file type.
+
+        @since 2.9.2
+     */
+    void AddExtension(const wxString& ext);
+
+    /**
+        Set the file type description.
+
+        @since 2.9.2
+     */
+    void SetDescription(const wxString& description);
+
+    /**
+        Set the command to be used for opening files of this type.
+
+        @since 2.9.2
+     */
+    void SetOpenCommand(const wxString& command);
+
+    /**
+        Set the command to be used for printing files of this type.
+
+        @since 2.9.2
+     */
+    void SetPrintCommand(const wxString& command);
+
+    /**
+        Set the short description for the files of this type.
+
+        This is only used under MSW for some of the registry keys used for the
+        file type registration.
+     */
+    void SetShortDesc(const wxString& shortDesc);
+};