XRC spec: relax requirements on some commonly omitted properties.

Some properties documented as required, such as labels on wxStaticText
or wxCheckBox or the size of wxSizer spacers, are frequently omitted in
practice.

Rather than strictly requiring them, forcing the markup to include dummy
empty elements, loosen the restriction in the spec and make them
optional.  Nothing changes about actual acceptance of files by
wxXmlResource: it would already silently deal with the lack of these
properties.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74924 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/docs/doxygen/overviews/xrc_format.h b/docs/doxygen/overviews/xrc_format.h
index f025471da8c1e23e4c52926b3890542899962883..9ba946961ec7eda9d37a76bf59bf2726f2e16cf8 100644 (file)
--- a/docs/doxygen/overviews/xrc_format.h
+++ b/docs/doxygen/overviews/xrc_format.h
@@ -686,7 +686,7 @@ Example:
 @beginTable
 @hdr3col{property, type, description}
 @row3col{label, @ref overview_xrcformat_type_text,
-    Label to display on the button (may be empty if only bitmap is used).}
+    Label to display on the button (may be omitted if only the bitmap or stock ID is used).}
 @row3col{bitmap, @ref overview_xrcformat_type_bitmap,
     Bitmap to display in the button (optional).}
 @row3col{bitmapposition, @c wxLEFT|wxRIGHT|wxTOP|wxBOTTOM,
@@ -706,7 +706,7 @@ No additional properties.
 @beginTable
 @hdr3col{property, type, description}
 @row3col{label, @ref overview_xrcformat_type_text,
-     Label to use for the checkbox (required).}
+     Label to use for the checkbox (default: empty).}
 @row3col{checked, @ref overview_xrcformat_type_bool,
      Should the checkbox be checked initially (default: 0)?}
 @endTable
@@ -1259,7 +1259,7 @@ wxMenuItem objects support the following properties:
 @beginTable
 @hdr3col{property, type, description}
 @row3col{label, @ref overview_xrcformat_type_text,
-     Item's label (required).}
+     Item's label (may be omitted if stock ID is used).}
 @row3col{accel, @ref overview_xrcformat_type_text_notrans,
      Item's accelerator (default: none).}
 @row3col{radio, @ref overview_xrcformat_type_bool,
@@ -1438,7 +1438,7 @@ Each @c propertysheetpage has exactly one non-toplevel window as its child.
 @beginTable
 @hdr3col{property, type, description}
 @row3col{label, @ref overview_xrcformat_type_text,
-     Label for the whole box (required).}
+     Label for the whole box (default: empty).}
 @row3col{dimension, integer,
      Specifies the maximum number of rows (if style contains
      @c wxRA_SPECIFY_ROWS) or columns (if style contains @c wxRA_SPECIFY_COLS)
@@ -1723,7 +1723,7 @@ child and the second one for right/bottom child window.
 @beginTable
 @hdr3col{property, type, description}
 @row3col{label, @ref overview_xrcformat_type_text,
-     Static box's label (required).}
+     Static box's label (default: empty).}
 @endTable
 
 
@@ -1737,7 +1737,7 @@ No additional properties.
 @beginTable
 @hdr3col{property, type, description}
 @row3col{label, @ref overview_xrcformat_type_text,
-     Label to display (required).}
+     Label to display (default: empty).}
 @row3col{wrap, @ref overview_xrcformat_type_dimension,
      Wrap the text so that each line is at most the given number of pixels, see
      wxStaticText::Wrap() (default: no wrap).}
@@ -2057,7 +2057,7 @@ they have one property:
 
 @beginTable
 @hdr3col{property, type, description}
-@row3col{size, @ref overview_xrcformat_type_size, Size of the empty space (required).}
+@row3col{size, @ref overview_xrcformat_type_size, Size of the empty space (default: @c wxDefaultSize).}
 @endTable
 
 Both @c sizeritem and @c spacer objects can have any of the following
@@ -2155,7 +2155,7 @@ class-specific properties. All classes support the following properties:
 @row3col{orient, @ref overview_xrcformat_type_style,
     Sizer orientation, "wxHORIZONTAL" or "wxVERTICAL" (default: wxHORIZONTAL).}
 @row3col{label, @ref overview_xrcformat_type_text,
-    Label to be used for the static box around the sizer (required).}
+    Label to be used for the static box around the sizer (default: empty).}
 @endTable
 
 @subsection overview_xrcformat_wxgridsizer wxGridSizer