fix problems of command line parameters

* Fix return code for wrong command line parameters.

* Update return code for incorrect command line option on WX port.

src/wx/wxvbam.cpp

@@ -206,6 +206,9 @@ bool wxvbamApp::OnInit()
     if (!wxApp::OnInit())
         return false;
 
+    if (console_mode)
+	return true;
+
     // prepare for loading xrc files
     wxXmlResource* xr = wxXmlResource::Get();
     // note: if linking statically, next 2 pull in lot of unused code
@@ -426,7 +429,7 @@ int wxvbamApp::OnRun()
     if (console_mode)
     {
 	// we could check for our own error codes here...
-	return EXIT_SUCCESS;
+	return console_status;
     }
     else
     {
@@ -441,6 +444,14 @@ bool wxvbamApp::OnCmdLineHelp(wxCmdLineParser& parser)
     return true;
 }
 
+bool wxvbamApp::OnCmdLineError(wxCmdLineParser& parser)
+{
+    wxApp::OnCmdLineError(parser);
+    console_mode = true;
+    console_status = 1;
+    return true;
+}
+
 void wxvbamApp::OnInitCmdLine(wxCmdLineParser& cl)
 {
     wxApp::OnInitCmdLine(cl);

src/wx/wxvbam.h

@@ -85,6 +85,7 @@ public:
     virtual bool OnInit();
     virtual int OnRun();
     virtual bool OnCmdLineHelp(wxCmdLineParser&);
+    virtual bool OnCmdLineError(wxCmdLineParser&);
     virtual bool UsingWayland() { return using_wayland; }
     virtual void OnInitCmdLine(wxCmdLineParser&);
     virtual bool OnCmdLineParsed(wxCmdLineParser&);
@@ -145,6 +146,7 @@ public:
 protected:
     bool using_wayland;
     bool console_mode = false;
+    int console_status = 0;
 
 private:
     wxPathList config_path;