call OnInit() from all samples to allow using standard command line options with all of them (patch 1623971)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@44354 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/html/about/about.cpp

@@ -85,6 +85,9 @@ IMPLEMENT_APP(MyApp)
 // `Main program' equivalent: the program execution "starts" here
 bool MyApp::OnInit()
 {
+    if ( !wxApp::OnInit() )
+        return false;
+
     // we use a PNG image in our HTML page
     wxImage::AddHandler(new wxPNGHandler);
 

samples/html/help/help.cpp

@@ -102,6 +102,9 @@
    // `Main program' equivalent: the program execution "starts" here
    bool MyApp::OnInit()
    {
+       if ( !wxApp::OnInit() )
+           return false;
+
       wxInitAllImageHandlers();
 #if wxUSE_STREAMS && wxUSE_ZIPSTREAM && wxUSE_ZLIB
       wxFileSystem::AddHandler(new wxZipFSHandler);

samples/html/helpview/helpview.cpp

@@ -53,6 +53,9 @@ IMPLEMENT_APP(MyApp)
 
 bool MyApp::OnInit()
 {
+    if ( !wxApp::OnInit() )
+        return false;
+
 #ifdef __WXMOTIF__
     delete wxLog::SetActiveTarget(new wxLogStderr); // So dialog boxes aren't used
 #endif

samples/html/htmlctrl/htmlctrl.cpp

@@ -125,6 +125,9 @@ IMPLEMENT_APP(MyApp)
 // 'Main program' equivalent: the program execution "starts" here
 bool MyApp::OnInit()
 {
+    if ( !wxApp::OnInit() )
+        return false;
+
     // create the main application window
     MyFrame *frame = new MyFrame(_T("wxWebKit Sample"));
 

samples/html/printing/printing.cpp

@@ -128,6 +128,9 @@ IMPLEMENT_APP(MyApp)
 
 bool MyApp::OnInit()
 {
+    if ( !wxApp::OnInit() )
+        return false;
+
 #if wxUSE_LIBPNG
     wxImage::AddHandler(new wxPNGHandler);
 #endif

samples/html/test/test.cpp

@@ -154,6 +154,9 @@ IMPLEMENT_APP(MyApp)
 // `Main program' equivalent: the program execution "starts" here
 bool MyApp::OnInit()
 {
+    if ( !wxApp::OnInit() )
+        return false;
+
 #if wxUSE_SYSTEM_OPTIONS
     wxSystemOptions::SetOption(wxT("no-maskblt"), 1);
 #endif

samples/html/virtual/virtual.cpp

@@ -155,6 +155,9 @@ wxFSFile* MyVFS::OpenFile(wxFileSystem& WXUNUSED(fs), const wxString& location)
    // `Main program' equivalent: the program execution "starts" here
    bool MyApp::OnInit()
    {
+     if ( !wxApp::OnInit() )
+         return false;
+
     // Create the main application window
       MyFrame *frame = new MyFrame(_("wxHtmlWindow testing application"),
          wxDefaultPosition, wxSize(640, 480));

samples/html/widget/widget.cpp

@@ -156,6 +156,9 @@ IMPLEMENT_APP(MyApp)
 // `Main program' equivalent: the program execution "starts" here
 bool MyApp::OnInit()
 {
+    if ( !wxApp::OnInit() )
+        return false;
+
     // Create the main application window
     MyFrame *frame = new MyFrame( _("wxHtmlWindow testing application"),
         wxDefaultPosition, wxSize(640, 480) );

samples/html/zip/zip.cpp

@@ -97,6 +97,9 @@ IMPLEMENT_APP(MyApp)
 // `Main program' equivalent: the program execution "starts" here
 bool MyApp::OnInit()
 {
+    if ( !wxApp::OnInit() )
+        return false;
+
 #if wxUSE_LIBPNG
     wxImage::AddHandler(new wxPNGHandler);
 #endif