+% Note: -e/C++ header generation documentation added by
+% Eduardo Marques <edrdo@netcabo.pt>
+%
\section{XML-based resource system overview}\label{xrcoverview}
Classes: \helpref{wxXmlResource}{wxxmlresource}, \helpref{wxXmlResourceHandler}{wxxmlresourcehandler}
to a suitable integer identifier, for example {\tt EVT\_MENU(XRCID("quit"), MyFrame::OnQuit)}.
\end{itemize}
-To create an XRC file, use one of the following methods.
+To create an XRC file, you can use one of the following methods.
\begin{itemize}\itemsep=0pt
\item Create the file by hand;
\item use \urlref{wxDesigner}{http://www.roebling.de}, a commercial dialog designer/RAD tool;
-\item use \urlref{XRCed}{http://www.mema.ucl.ac.be/~rolinsky/xrced/}, a wxPython-based
+\item use \urlref{DialogBlocks}{http://www.anthemion.co.uk/dialogblocks}, a commercial dialog editor;
+\item use \urlref{XRCed}{http://xrced.sf.net}, a wxPython-based
dialog editor that you can find in the {\tt wxPython/tools} subdirectory of the wxWindows
CVS archive;
-\item use \urlref{wxWorkshop}{http://wxworkshop.sourceforge.net} (under development);
+\item use \urlref{Glade}{http://wxglade.sf.net}, a GUI designer written in wxPython. At the moment it can generate Python, C++ and XRC;
\item use wxrcedit ({\tt utils/contrib/wxrcedit}) (under development);
\item convert WIN32 RC files to XRC with the tool in {\tt contrib/utils/convertrc}.
\end{itemize}
-It is highly recommended that you use a tool such as wxDesigner, since it's fiddly writing
+A complete list of third-party tools that write to XRC can be found at \urlref{www.wxwindows.org/lnk\_tool.htm}{http://www.wxwindows.org/lnk\_tool.in}.
+
+It is highly recommended that you use a resource editing tool, since it's fiddly writing
XRC files by hand.
You can use \helpref{wxXmlResource::Load}{wxxmlresourceload} in a number of ways.
\item -h (--help): show a help message
\item -v (--verbose): show verbose logging information
\item -c (--cpp-code): write C++ source rather than a XRS file
+\item -e (--extra-cpp-code): if used together with -c, generates C++ header file
+containing class definitions for the windows defined by the XRC file (see special subsection)
\item -u (--uncompressed): do not compress XML files (C++ only)
\item -g (--gettext): output .po catalog (to stdout, or a file if -o is used)
\item -n (--function) <name>: specify C++ function name (use with -c)
it with standard ZIP tools. Note that if you are using XRS files, you have
to initialize \helpref{wxFileSystem}{wxfilesystem} ZIP handler first! It is a simple
thing to do:
+
\begin{verbatim}
#include <wx/filesys.h>
#include <wx/fs_zip.h>
{\tt wxrc} utility to produce C++ file with embedded resources. This file will
contain a function called {\it InitXmlResource} (unless you override this with
a command line switch). Use it to load the resource:
+
\begin{verbatim}
+ extern void InitXMLResource(); // defined in generated file
+ ...
wxXmlResource::Get()->InitAllHandlers();
InitXmlResource();
...
MyFrame *frame = new MyFrame("XML resources demo",
wxPoint(50, 50), wxSize(450, 340));
- frame->Show(TRUE);
- return TRUE;
+ frame->Show(true);
+ return true;
}
// ----------------------------------------------------------------------------
// event handlers
void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
{
- // TRUE is to force the frame to close
- Close(TRUE);
+ // true is to force the frame to close
+ Close(true);
}
void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
Please see Technical Note 14 (docs/tech/tn0014.txt) in your wxWindows
distribution.
+\subsection{C++ header file generation}\label{xrccppheader}
+
+Using the {\tt -e} switch together with {\tt -c}, a C++ header file is written
+containing class definitions for the GUI windows defined in the XRC file.
+This code generation can make it easier to use XRC and automate program
+development.
+The classes can be used as basis for development, freeing the
+programmer from dealing with most of the XRC specifities (e.g. {\tt XRCCTRL}).
+
+For each top level window defined in the XRC file a C++ class definition is
+generated, containing as class members the named widgets of the window.
+A default constructor for each class is also generated. Inside the constructor
+all XRC loading is done and all class members representing widgets are initialized.
+
+A simple example will help understand how the scheme works. Suppose you have
+a XRC file defining a top level window {\tt TestWnd\_Base}, which subclasses {\tt wxFrame} (any
+other class like {\tt wxDialog} will do also), and has subwidgets {\tt wxTextCtrl} A and {\tt wxButton} B.
+The XRC file and corresponding class definition in the header file will be something like:
+
+\begin{verbatim}
+<?xml version="1.0"?>
+<resource version="2.3.0.1">
+ <object class="wxFrame" name="TestWnd_Base">
+ <size>-1,-1</size>
+ <title>Test</title>
+ <object class="wxBoxSizer">
+ <orient>wxHORIZONTAL</orient>
+ <object class="sizeritem">
+ <object class="wxTextCtrl" name="A">
+ <label>Test label</label>
+ </object>
+ </object>
+ <object class="sizeritem">
+ <object class="wxButton" name="B">
+ <label>Test button</label>
+ </object>
+ </object>
+ </object>
+ </object>
+</resource>
+
+
+class TestWnd_Base : public wxFrame {
+protected:
+ wxTextCtrl* A;
+ wxButton* B;
+
+private:
+ void InitWidgetsFromXRC(){
+ wxXmlResource::Get()->LoadObject(this,NULL,"TestWnd","wxFrame");
+ A = XRCCTRL(*this,"A",wxTextCtrl);
+ B = XRCCTRL(*this,"B",wxButton);
+ }
+public:
+TestWnd::TestWnd(){
+ InitWidgetsFromXRC();
+ }
+};
+\end{verbatim}
+
+The generated window class can be used as basis for the full window class. The
+class members which represent widgets may be accessed by name instead of using
+{\tt XRCCTRL} every time you wish to reference them (note that they are {\tt protected} class members),
+though you must still use {\tt XRCID} to refer to widget ids in the event
+table.
+
+Example:
+
+\begin{verbatim}
+#include "resource.h"
+
+class TestWnd : public TestWnd_Base {
+ public:
+ TestWnd(){
+ // A, B already initialised at this point
+ A->SetValue("Updated in TestWnd::TestWnd");
+ B->SetValue("Nice :)");
+ }
+ void OnBPressed(wxEvent& event){
+ Close();
+ }
+ DECLARE_EVENT_TABLE();
+};
+
+BEGIN_EVENT_TABLE(TestWnd,TestWnd_Base)
+EVT_BUTTON(XRCID("B"),TestWnd::OnBPressed)
+END_EVENT_TABLE()
+
+\end{verbatim}
+
\subsection{Adding new resource handlers}\label{newresourcehandlers}
Coming soon.
projects / wxWidgets.git / blobdiff