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// Example for use of GNU gettext.
// This file is in the public domain.
// Source code of the C++ program.
#include <wx/wx.h>
#include <wx/intl.h>
/* Get getpid() declaration. */
#if HAVE_UNISTD_H
# include <unistd.h>
#endif
class MyApp: public wxApp
{
public:
virtual bool OnInit();
private:
// wxWidgets has the concept of a "current locale". It is the one returned
// by wxGetLocale() and implicitly used by wxGetTranslation.
// But there is no way to explicitly set this current locale! Rather, it is
// always set to the last constructed locale(!), and is modified when a
// locale is destroyed. In such a way that the current locale points to
// invalid memory after you do
// wxLocale *a = new wxLocale;
// wxLocale *b = new wxLocale;
// delete a;
// delete b;
// So, to avoid problems, we use exactly one instance of wxLocale, and keep
// it alive for the entire application lifetime.
wxLocale appLocale;
};
class MyFrame: public wxFrame
{
public:
MyFrame();
};
// This defines the main() function.
IMPLEMENT_APP(MyApp)
bool MyApp::OnInit()
{
// First, register the base directory where to look up .mo files.
wxLocale::AddCatalogLookupPathPrefix(wxT(LOCALEDIR));
// Second, initialize the locale and set the application-wide message domain.
appLocale.Init();
appLocale.AddCatalog(wxT("hello-c++-wxwidgets"));
// Now wxGetLocale() is initialized appropriately.
// Then only start building the GUI elements of the application.
// Create the main frame window.
MyFrame *frame = new MyFrame();
// Show the frame.
frame->Show(true);
SetTopWindow(frame);
return true;
}
MyFrame::MyFrame()
: wxFrame(NULL, wxID_ANY, _T("Hello example"))
{
wxStaticText *label1 =
new wxStaticText(this, wxID_ANY, _("Hello, world!"));
wxString label2text =
wxString::Format(_("This program is running as process number %d."),
getpid());
wxStaticText *label2 =
new wxStaticText(this, wxID_ANY, label2text);
wxBoxSizer *topSizer = new wxBoxSizer(wxVERTICAL);
topSizer->Add(label1);
topSizer->Add(label2);
SetSizer(topSizer);
}
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