add PostSizeEvent() and use it in wxMSW status bar code (#9795)

[wxWidgets.git] / docs / tech / tn0014.txt

diff --git a/docs/tech/tn0014.txt b/docs/tech/tn0014.txt
index 8b8c8e31e681ee0f05dd418a7ba1cad4b66e7c00..75b492fda06ba293d936f84510b6954f60b2fa7b 100644 (file)
--- a/docs/tech/tn0014.txt
+++ b/docs/tech/tn0014.txt
@@ -13,30 +13,35 @@ dialog editors with XRC support.
 If you only want to use the resources, you can choose from a number of editors:
   a) wxDesigner (http://www.roebling.de)
   b) XRCed (wxPython/tools)
 If you only want to use the resources, you can choose from a number of editors:
   a) wxDesigner (http://www.roebling.de)
   b) XRCed (wxPython/tools)

-  c) wxWorkshop (http://wxworkshop.sf.net)
-  b) wxrcedit (contrib/utils/wxrcedit)
+  c) DialogBlocks (wxPython/tools)
+
+and others listed on the Resources section of the wxWidgets web
+site.

 
 The XRC format is based on XML 1.0 (please consult W3C's specification). There
 is no DTD available since it is not possible to fully describe the format with
 the limited expressive power of DTDs.
 
 
 
 The XRC format is based on XML 1.0 (please consult W3C's specification). There
 is no DTD available since it is not possible to fully describe the format with
 the limited expressive power of DTDs.
 
 

+Note: see also http://ldaptool.sourceforge.net/XRCGuide/XRCGuideSingle/
+
+

 
 1. Terminology
 ==============
 
 
 1. Terminology
 ==============
 

-The usual XML terminology applies. In particular, we shall use the terms 
+The usual XML terminology applies. In particular, we shall use the terms

 NODE, PROPERTY and VALUE in the XML sense:
 
     <node property1="value1" property2="value2">...</node>
 
 NODE, PROPERTY and VALUE in the XML sense:
 
     <node property1="value1" property2="value2">...</node>
 

-The term ATTRIBUTE is specific to XRC and refers to a subnode 
-of an <object> or <object_ref> node that is itself not <object> or <object_ref>. 
-In the example bellow, <pos>, <label> and <style> are attributes, while neither 
+The term ATTRIBUTE is specific to XRC and refers to a subnode
+of an <object> or <object_ref> node that is itself not <object> or <object_ref>.
+In the example below, <pos>, <label> and <style> are attributes, while neither

 <resource> nor either of <object>s is:
 
     <?xml version="1.0" encoding="utf-8">
 <resource> nor either of <object>s is:
 
     <?xml version="1.0" encoding="utf-8">

-    <resource xmlns="http://www.wxwindows.org/wxxrc" version="2.3.0.1">
+    <resource xmlns="http://www.wxwidgets.org/wxxrc" version="2.5.3.0">

         <object class="wxPanel">
             <style>wxSUNKEN_BORDER</style>             <!-- attr -->
             <object class="wxStaticText">
         <object class="wxPanel">
             <style>wxSUNKEN_BORDER</style>             <!-- attr -->
             <object class="wxStaticText">


@@ -57,17 +62,17 @@ can think of it as attribute value syntax definition).
 =========================
 
 XRC resource file is a well-formed XML 1.0 document. All elements of XRC file
 =========================
 
 XRC resource file is a well-formed XML 1.0 document. All elements of XRC file

-are from the http://www.wxwindows.org/wxxrc namespace. 
+are from the http://www.wxwidgets.org/wxxrc namespace.

 
 

-The root node of XRC document must be <resource>. The <resource> node has 
-optional "version" property. Default version  (in absence of the version 
-property) is "0.0.0.0". The version consists of four integers separated by 
-periods. Version of XRC format changes only if there was an incompatible 
-change introduced (i.e. either the library cannot understand old resource 
+The root node of XRC document must be <resource>. The <resource> node has
+optional "version" property. Default version  (in absence of the version
+property) is "0.0.0.0". The version consists of four integers separated by
+periods. Version of XRC format changes only if there was an incompatible
+change introduced (i.e. either the library cannot understand old resource

 files or older versions of the library wouldn't understand the new format).
 files or older versions of the library wouldn't understand the new format).

-The first three integers are major, minor and release number of the wxWindows 
-release when the change was introduced, the last one is revision number and 
-is 0 for the first incompatible change in given wxWindows release, 1 for 
+The first three integers are major, minor and release number of the wxWidgets
+release when the change was introduced, the last one is revision number and
+is 0 for the first incompatible change in given wxWidgets release, 1 for

 the second etc.
 
 Differences between versions are described within this document in paragraphs
 the second etc.
 
 Differences between versions are described within this document in paragraphs


@@ -75,41 +80,46 @@ entitled "Version Note".
 
 The <resource> node contains namespace declaration, too:
 
 
 The <resource> node contains namespace declaration, too:
 

-    <resource xmlns="http://www.wxwindows.org/wxxrc" version="2.3.0.1">
+    <resource xmlns="http://www.wxwidgets.org/wxxrc" version="2.5.3.0">

 
 The <resource> node is only allowed to have <object> and <object_ref>
 subnodes, all of which must have the "name" property.
 
 The <object> node represents a single object (GUI element) and it usually maps
 
 The <resource> node is only allowed to have <object> and <object_ref>
 subnodes, all of which must have the "name" property.
 
 The <object> node represents a single object (GUI element) and it usually maps

-directly to a wxWindows class instance. It three properties: "name", "class"
-and "subclass". "class" must always be present, it tells XRC what wxWindows
+directly to a wxWidgets class instance. It has the properties: "name", "class"
+and "subclass". "class" must always be present, it tells XRC what wxWidgets

 object should be created in this place. The other two are optional.  "name" is
 ID used to identify the object. It is the value passed to the XRCID() macro and
 is also used to construct wxWindow's id and name attributes and must be unique
 object should be created in this place. The other two are optional.  "name" is
 ID used to identify the object. It is the value passed to the XRCID() macro and
 is also used to construct wxWindow's id and name attributes and must be unique

-among all children of the neareset container object (wxDialog, wxFrame,
-wxPanel, wxNotebook) upside from the object in XML nodes hiearchy (two distinct
+among all children of the nearest container object (wxDialog, wxFrame,
+wxPanel, wxNotebook) upside from the object in XML nodes hierarchy (two distinct

 containers may contain objects with same "name", though). "subclass" is
 optional name of class whose constructor will be called instead of the
 constructor for "class". Subclass must be available in the program that loads
 the resource, must be derived from "class" and must be registered within
 containers may contain objects with same "name", though). "subclass" is
 optional name of class whose constructor will be called instead of the
 constructor for "class". Subclass must be available in the program that loads
 the resource, must be derived from "class" and must be registered within

-wxWindows' RTTI system.
+wxWidgets' RTTI system.
+
+Finally, an optional "insert_at" property may be present. Currently only the
+values "begin" and "end" are supported, meaning to insert the object in the
+beginning of the parent node objects list or to append it at the end (which is
+the default if this property is absent).

 
 Example:
 
     <object name="MyList1" class="wxListCtrl" subclass="MyListCtrlClass">
         ...
 
 Example:
 
     <object name="MyList1" class="wxListCtrl" subclass="MyListCtrlClass">
         ...

-    </object>    
-    
+    </object>
+

 <object> node may have arbitrary child nodes. What child nodes and their
 semantics are class-dependent and are defined later in this document. The user
 is allowed to register new object handlers within XRC and extend it to accept
 new <object> classes (and therefore different <object>'s child nodes).
 
 <object_ref> node is identical to <object>, except that it does _not_ have
 <object> node may have arbitrary child nodes. What child nodes and their
 semantics are class-dependent and are defined later in this document. The user
 is allowed to register new object handlers within XRC and extend it to accept
 new <object> classes (and therefore different <object>'s child nodes).
 
 <object_ref> node is identical to <object>, except that it does _not_ have

-"class" property and has additonal required property "ref". It's concept is
+"class" property and has additional required property "ref". Its concept is

 similar to Unix symlinks: value of the "ref" property is equal to the value of
 "name" property of some existing node (called referred node) in the resources
 similar to Unix symlinks: value of the "ref" property is equal to the value of
 "name" property of some existing node (called referred node) in the resources

-(not neccessary top-level).  Referred node's "class" property and all subnodes
+(not necessary top-level).  Referred node's "class" property and all subnodes

 are copied in place of the referee <object_ref> node which is then processed as
 regular <object> node. If the <object_ref> node itself has child nodes, then
 these nodes _override_ any nodes from the referred node.
 are copied in place of the referee <object_ref> node which is then processed as
 regular <object> node. If the <object_ref> node itself has child nodes, then
 these nodes _override_ any nodes from the referred node.


@@ -124,7 +134,7 @@ Example:
         <value>bar</value>               <!-- override! -->
     </object_ref>
 
         <value>bar</value>               <!-- override! -->
     </object_ref>
 

-is identical to:    
+is identical to:

 
     <object name="foo" class="wxTextCtrl">
         <value>hello</value>
 
     <object name="foo" class="wxTextCtrl">
         <value>hello</value>


@@ -147,11 +157,13 @@ String
 ------
 Any text. Some characters have special interpretation and are translated
 by XRC parser according to this table:
 ------
 Any text. Some characters have special interpretation and are translated
 by XRC parser according to this table:

-    "_"    -> "&"  ('&' is used to underline e.g. menu items in wxWindows)
+    "_"    -> "&"  ('&' is used to underline e.g. menu items in wxWidgets)

     "__"   -> "_"
     "\n"   -> line break (C character '\n')
     "\r"   -> carriage return (C character '\r')
     "__"   -> "_"
     "\n"   -> line break (C character '\n')
     "\r"   -> carriage return (C character '\r')

-    "\t"   -> tabelator (C character '\t')
+    "\t"   -> tab (C character '\t')
+    "\\"   -> "\"
+              (introduced in version 2.5.3.0, not done in earlier versions)

 
 Version Note:
     '$' was used instead of '_' prior to version 2.3.0.1.
 
 Version Note:
     '$' was used instead of '_' prior to version 2.3.0.1.


@@ -191,10 +203,10 @@ Style[wxSomeClass]
 ------------------
 List of style flags that can be passed to wxSomeClass' constructor. Flags are
 written in same way as in C++ code (e.g. "wxSUNKEN_BORDER",
 ------------------
 List of style flags that can be passed to wxSomeClass' constructor. Flags are
 written in same way as in C++ code (e.g. "wxSUNKEN_BORDER",

-"wxHW_SCROLLBAR_NEVER") and are delimined with any combination of whitespaces
+"wxHW_SCROLLBAR_NEVER") and are delimited with any combination of whitespaces

 and '|'. Possible flags are class-dependent and are not described in this
 and '|'. Possible flags are class-dependent and are not described in this

-technote. Please refer to wxWindows manual for all styles that given class can
-accept; if XRC does not accept a flag listed in wxWindows documentation, it is
+technote. Please refer to wxWidgets manual for all styles that given class can
+accept; if XRC does not accept a flag listed in wxWidgets documentation, it is

 a bug.
 
 
 a bug.
 
 


@@ -204,14 +216,14 @@ Attribute value is interpreted as filename (either absolute or relative to
 the location of XRC resource file). In addition, attribute node may have
 "stock_id" and "stock_client" properties. Their values may be any of wxArtID (or
 wxArtClient respectively) values as used by wxArtProvider (because the user may
 the location of XRC resource file). In addition, attribute node may have
 "stock_id" and "stock_client" properties. Their values may be any of wxArtID (or
 wxArtClient respectively) values as used by wxArtProvider (because the user may

-define own constants, efectively any string is legal here). Examples are
+define own constants, effectively any string is legal here). Examples are

 "wxART_FILE_OPEN" (id) or "wxART_MENU" (client).
 
 Any of "stock_id" or "stock_client" properties or the filename may be omitted.
 "wxART_FILE_OPEN" (id) or "wxART_MENU" (client).
 
 Any of "stock_id" or "stock_client" properties or the filename may be omitted.

-XRC determines the bitmap to use according to this algorithm: 
+XRC determines the bitmap to use according to this algorithm:

   1. If there is non-empty "stock_id" property, query wxArtProvider for the
      bitmap (if there is no "stock_client", use default one, which is usually
   1. If there is non-empty "stock_id" property, query wxArtProvider for the
      bitmap (if there is no "stock_client", use default one, which is usually

-     wxART_OTHER; exceptions are noted in class-specific sections bellow). If
+     wxART_OTHER; exceptions are noted in class-specific sections below). If

      the query fails, continue to 2.
   2. Load the bitmap from the file in attribute value.
 
      the query fails, continue to 2.
   2. Load the bitmap from the file in attribute value.
 


@@ -221,6 +233,55 @@ Boolean
 Boolean value, either "0" (false) or "1" (true).
 
 
 Boolean value, either "0" (false) or "1" (true).
 
 

+Font
+----
+Font value. A font can be described either in terms of its elementary
+properties, or it can be derived from one of system fonts. The font node
+may contain following subnodes (the table lists subnode name on the left and
+variable type as per the definitions above on the right side):
+
+size            UnsignedInteger
+style           normal | italic | slant
+weight          normal | bold | light
+family          roman | script | decorative | swiss | modern | teletype
+underlined      Boolean
+face            comma-separated list of faces
+encoding        charset of the font (meaningless in Unicode build), as string
+sysfont         symbolic name of system standard font
+                (one of wxSYS_*_FONT constants)
+relativesize    Float, font size relative to choosen system font's size;
+                can only be used when 'sysfont' is used and when 'size' is not
+                used
+
+All of them are optional, if they are missing, wxFont default is used.
+
+Examples:
+
+    <font>
+        <face>arial,helvetica</face>
+        <size>12</size>
+    </font>
+
+    <font>
+        <sysfont>wxSYS_DEFAULT_GUI_FONT</sysfont>
+        <weight>bold</weight>
+        <relativesize>1.5</relativesize>
+    </font>
+
+
+Colour
+------
+A colour value is either explicit RGB value in the standard #rrggbb format
+where rr, gg and bb are hexadecimal case-insensitive values in the 00..FF
+range, or a symbolic name. Symbolic names are wxSYS_COLOUR_* constants defined
+by wxWidgets, written as strings.
+
+Example:
+
+    <bg>wxSYS_COLOUR_SCROLLBAR</bg>
+    <fg>#FF0000</fg>
+
+

 
 4. Supported classes
 ====================
 
 4. Supported classes
 ====================


@@ -230,9 +291,23 @@ attribute name             attribute type          default value, if any
                            [(optional remarks....................
                            ...................................)]
 
                            [(optional remarks....................
                            ...................................)]
 

+Common attributes
+-----------------
+These attributes are supported by all windows:
+
+exstyle                    Int
+bg                         Colour
+fg                         Colour
+enabled                    Boolean                 true
+focused                    Boolean                 false
+hidden                     Boolean                 false
+tooltip                    I18nString
+font                       Font
+help                       I18nString
+

 wxBitmap
 --------
 wxBitmap
 --------

-This is a special case, because it does not create a wxWindow instance but 
+This is a special case, because it does not create a wxWindow instance but

 creates wxBitmap instead. Another exceptional thing is that it does not have
 any attributes. Instead, the node itself is interpreted as if it were attribute
 of type Bitmap.
 creates wxBitmap instead. Another exceptional thing is that it does not have
 any attributes. Instead, the node itself is interpreted as if it were attribute
 of type Bitmap.


@@ -247,9 +322,9 @@ Identical to wxBitmap class, except that it creates wxIcon instead of wxBitmap.
 
 wxButton
 --------
 
 wxButton
 --------

-position                   Position                -1,-1
+pos                        Position                -1,-1

 size                       Size                    -1,-1
 size                       Size                    -1,-1

-style                      Style[wxButton]    
+style                      Style[wxButton]

 
 label                      I18nString
 default                    Boolean                 false
 
 label                      I18nString
 default                    Boolean                 false


@@ -258,14 +333,14 @@ default                    Boolean                 false
 
 wxCalendarCtrl
 --------------
 
 wxCalendarCtrl
 --------------

-position                   Position                -1,-1
+pos                        Position                -1,-1

 size                       Size                    -1,-1
 style                      Style[wxCalendarCtrl]
 
 
 wxCheckBox
 ----------
 size                       Size                    -1,-1
 style                      Style[wxCalendarCtrl]
 
 
 wxCheckBox
 ----------

-position                   Position                -1,-1
+pos                        Position                -1,-1

 size                       Size                    -1,-1
 style                      Style[wxCheckBox]
 checked                    Boolean                 false
 size                       Size                    -1,-1
 style                      Style[wxCheckBox]
 checked                    Boolean                 false


@@ -273,10 +348,10 @@ checked                    Boolean                 false
 
 wxCheckList
 -----------
 
 wxCheckList
 -----------

-position                   Position                -1,-1
+pos                        Position                -1,-1

 size                       Size                    -1,-1
 style                      Style[wxCheckList]
 size                       Size                    -1,-1
 style                      Style[wxCheckList]

-content                    (see bellow)            (empty)
+content                    (see below)             (empty)

 
 Optional "content" attribute does not have attribute value. Instead,
 arbitrary number of <item> nodes may be rooted under it (the control
 
 Optional "content" attribute does not have attribute value. Instead,
 arbitrary number of <item> nodes may be rooted under it (the control


@@ -296,16 +371,107 @@ Example:
 </object>
 
 
 </object>
 
 

+wxDatePickerCtrl
+----------------
+pos                        Position                -1,-1
+size                       Size                    -1,-1
+style                      Style[wxDatePickerCtrl]
+
+
+wxDialog
+--------
+pos                        Position                -1,-1
+size                       Size                    -1,-1
+style                      Style[wxDialog]         wxDEFAULT_DIALOG_STYLE
+title                      I18nString              ""
+icon                       Bitmap                  (empty)
+centered                   Boolean                 false
+
+wxDialog may have children objects.
+
+
+wxFrame
+--------
+pos                        Position                -1,-1
+size                       Size                    -1,-1
+style                      Style[wxDialog]         wxDEFAULT_FRAME_STYLE
+title                      I18nString              ""
+icon                       Bitmap                  (empty)
+centered                   Boolean                 false
+
+wxFrame may have children objects. There can be at most one wxToolBar,
+wxMenuBar and wxStatusBar children; objects of these types are automatically
+set as frame's tool-, menu- and statusbar respectively.
+
+
+wxMDIParentFrame
+----------------
+
+Supports same attributes and children nodes as wxFrame. Additionally, children
+may be of the wxMDIChildFrame type.
+
+
+wxMDIChildFrame
+---------------
+
+Supports same attributes and children nodes as wxFrame.
+
+
+wxRadioBox
+----------
+
+This control may have "dimension" (major dimension) and (initial) "selection"
+Integer subelements and a composite "content" element similar to wxCheckList.
+The only difference is that the "item" subelements can have an optional
+"tooltip=I18nString" and "helptext=I18nString" attributes to specify
+the per-item tooltip and helptext.
+
+

 wxScrolledWindow
 ----------------
 wxScrolledWindow
 ----------------

-position                   Position                -1,-1
+pos                        Position                -1,-1

 size                       Size                    -1,-1
 style                      Style[wxScrolledWindow] wxHSCROLL | wxVSCROLL
 size                       Size                    -1,-1
 style                      Style[wxScrolledWindow] wxHSCROLL | wxVSCROLL

+scrollrate                 Size                    0,0
+
+wxScolledWindow may have children objects.
+
+
+wxSplitterWindow
+----------------
+pos                        Position                -1,-1
+size                       Size                    -1,-1
+style                      Style[wxSplitterWindow] wxSP_3D
+sashpos                    Integer                 0
+                           (Initial sash position)
+minsize                    Integer                 -1
+                           (Minimal panel size)
+orientation                "horizontal"|"vertical" horizontal
+
+wxSplitterWindow must have at least one and at most two children objects.
+If there's only one child object, it is passed to wxSplitterWindow::Initialize
+and the splitter is created unsplit. If there are two children, the
+splitter is created split, either horizontally or vertically depending
+on the value of "orientation" attribute.
+
+
+wxStaticText
+------------
+
+wxStaticText supports one class-specific attribute which wraps the controls
+contents at the specified boundary:
+
+wrap                       Integer, in pixels     None
+
+wxStatusBar
+-----------
+fields                     Integer number of fields
+widths                     Width1, Width2, Width3, ...

 
 
 wxToolBar
 ---------
 
 
 wxToolBar
 ---------

-position                   Position                -1,-1
+pos                        Position                -1,-1

 size                       Size                    -1,-1
 style                      Style[wxToolBar]        wxNO_BORDER|wxTB_HORIZONTAL
 bitmapsize                 Size                    -1,-1
 size                       Size                    -1,-1
 style                      Style[wxToolBar]        wxNO_BORDER|wxTB_HORIZONTAL
 bitmapsize                 Size                    -1,-1


@@ -313,9 +479,11 @@ bitmapsize                 Size                    -1,-1
 margins                    Size                    -1,-1
 packing                    Integer                 -1
 separation                 Integer                 -1
 margins                    Size                    -1,-1
 packing                    Integer                 -1
 separation                 Integer                 -1

+bg                         Background colour       None
+dontattachtoframe          Boolean                 False

 
 wxToolBar node may have children <object> and <object_ref> nodes. Their class
 
 wxToolBar node may have children <object> and <object_ref> nodes. Their class

-may be either "tool", "separator" or any wxWindows class derived from
+may be either "tool", "separator" or any wxWidgets class derived from

 wxControl. "tool" and "separator" are special pseudo-classes that may only
 appear within wxToolBar node. Their attributes are as follows:
 
 wxControl. "tool" and "separator" are special pseudo-classes that may only
 appear within wxToolBar node. Their attributes are as follows:
 


@@ -325,24 +493,17 @@ appear within wxToolBar node. Their attributes are as follows:
 
     tool
     ----
 
     tool
     ----

-    bitmap                 Bitmap                  
+    bitmap                 Bitmap

     bitmap2                Bitmap                  wxNullBitmap
     toggle                 Boolean                 0
     radio                  Boolean                 0
     bitmap2                Bitmap                  wxNullBitmap
     toggle                 Boolean                 0
     radio                  Boolean                 0

+    disabled               Boolean                 0

     label                  I18nString              ""
     tooltip                I18nString              ""
     longhelp               I18nString              ""
     label                  I18nString              ""
     tooltip                I18nString              ""
     longhelp               I18nString              ""

-    position               Position                -1,-1

 
     Constraints:
       At most one of "toggle" and "radio" attributes may be 1.
 
     Constraints:
       At most one of "toggle" and "radio" attributes may be 1.

-      Attribute "position" may not appear if "label" or "radio" attributes
-      are used or if parent wxToolBar's style contains wxTB_TEXT.
-    
-    Note:
-      Use of "position" attribute is strongly discouraged, it is deprecated
-      usage of wxToolBar and it is not supported by MSW and GTK
-      implementations.

 
 Children objects are added to the toolbar using AddTool for "tool" class,
 AddSeparator for "separator" and AddControl for other classes.
 
 Children objects are added to the toolbar using AddTool for "tool" class,
 AddSeparator for "separator" and AddControl for other classes.