Update configuration for OpenVMS

[wxWidgets.git] / samples / xrc / xrcdemo.cpp

diff --git a/samples/xrc/xrcdemo.cpp b/samples/xrc/xrcdemo.cpp
index 64b0309f60be9f2c2cee52de4f16a83037f86344..6c93d4b75b2a4c5b2941e6cda6094e4bbdf956c1 100644 (file)
--- a/samples/xrc/xrcdemo.cpp
+++ b/samples/xrc/xrcdemo.cpp
@@ -7,14 +7,6 @@
 // Licence:     wxWindows licence
 //-----------------------------------------------------------------------------
 
-//-----------------------------------------------------------------------------
-// GCC implementation
-//-----------------------------------------------------------------------------
-
-#ifdef __GNUG__
-    #pragma implementation "xrcdemo.h"
-#endif
-
 //-----------------------------------------------------------------------------
 // Standard wxWidgets headers
 //-----------------------------------------------------------------------------
@@ -39,16 +31,14 @@
 #include "xrcdemo.h"
 
 //-----------------------------------------------------------------------------
-// Remaining headers: Needed wx headers, then wx/contrib headers, then application headers
+// Remaining headers: Needed wx headers, then wx/contrib headers, then app one
 //-----------------------------------------------------------------------------
 
 #include "wx/image.h"               // wxImage
 
-//-----------------------------------------------------------------------------
+#include "wx/xrc/xmlres.h"          // XRC XML resources
 
-#include "wx/xrc/xmlres.h"          // XRC XML resouces
-
-//-----------------------------------------------------------------------------
+#include "wx/cshelp.h"              // wxSimpleHelpProvider for helptext
 
 #include "myframe.h"
 
@@ -70,6 +60,9 @@ IMPLEMENT_APP(MyApp)
 // 'Main program' equivalent: the program execution "starts" here
 bool MyApp::OnInit()
 {
+    if ( !wxApp::OnInit() )
+        return false;
+
     // If there is any of a certain format of image in the xrcs, then first
     // load a handler for that image type. This example uses XPMs, but if
     // you want PNGs, then add a PNG handler, etc. See wxImage::AddHandler()
@@ -88,34 +81,61 @@ bool MyApp::OnInit()
     // into one giant XRC file if you wanted, but then they become more
     // diffcult to manage, and harder to reuse in later projects.
     // The menubar
-    wxXmlResource::Get()->Load(wxT("rc/menu.xrc"));
+    if (!wxXmlResource::Get()->Load(wxT("rc/menu.xrc")))
+        return false;
+
     // The toolbar
-    wxXmlResource::Get()->Load(wxT("rc/toolbar.xrc"));
+    if (!wxXmlResource::Get()->Load(wxT("rc/toolbar.xrc")))
+        return false;
+
     // Non-derived dialog example
-    wxXmlResource::Get()->Load(wxT("rc/basicdlg.xrc"));
+    if (!wxXmlResource::Get()->Load(wxT("rc/basicdlg.xrc")))
+        return false;
+
     // Derived dialog example
-    wxXmlResource::Get()->Load(wxT("rc/derivdlg.xrc"));
+    if (!wxXmlResource::Get()->Load(wxT("rc/derivdlg.xrc")))
+        return false;
+
     // Controls property example
-    wxXmlResource::Get()->Load(wxT("rc/controls.xrc"));
+    if (!wxXmlResource::Get()->Load(wxT("rc/controls.xrc")))
+        return false;
+
     // Frame example
-    wxXmlResource::Get()->Load(wxT("rc/frame.xrc"));
+    if (!wxXmlResource::Get()->Load(wxT("rc/frame.xrc")))
+        return false;
+
     // Uncentered example
-    wxXmlResource::Get()->Load(wxT("rc/uncenter.xrc"));
+    if (!wxXmlResource::Get()->Load(wxT("rc/uncenter.xrc")))
+        return false;
+
     // Custom class example
-    wxXmlResource::Get()->Load(wxT("rc/custclas.xrc"));
+    if (!wxXmlResource::Get()->Load(wxT("rc/custclas.xrc")))
+        return false;
+
     // wxArtProvider example
-    wxXmlResource::Get()->Load(wxT("rc/artprov.xrc"));
+    if (!wxXmlResource::Get()->Load(wxT("rc/artprov.xrc")))
+        return false;
+
     // Platform property example
-    wxXmlResource::Get()->Load(wxT("rc/platform.xrc"));
+    if (!wxXmlResource::Get()->Load(wxT("rc/platform.xrc")))
+        return false;
+
     // Variable expansion example
-    wxXmlResource::Get()->Load(wxT("rc/variable.xrc"));
+    if (!wxXmlResource::Get()->Load(wxT("rc/variable.xrc")))
+        return false;
+
+
+#if wxUSE_HELP
+    // Use the simple help provider to show the context-sensitive help
+    wxHelpProvider::Set( new wxSimpleHelpProvider );
+#endif // wxUSE_HELP
 
     // Make an instance of your derived frame. Passing NULL (the default value
-    // of MyFrame's constructor is NULL) as the frame doesn't have a frame
-    // since it is the first window.
+    // of MyFrame's constructor is NULL) as the frame doesn't have a parent
+    // since it is the main application window.
     MyFrame *frame = new MyFrame();
 
-    // Show the frame.
+    // Show the frame as it's created initially hidden.
     frame->Show(true);
 
     // Return true to tell program to continue (false would terminate).