X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/ab73fe8d1dc54cb83e3a18868db770c96760fbb6..e960c20e389061c0db09e03fdaf9ffe3a418779b:/samples/menu/menu.cpp

diff --git a/samples/menu/menu.cpp b/samples/menu/menu.cpp
index 6d19fa4af4..97c563ab96 100644
--- a/samples/menu/menu.cpp
+++ b/samples/menu/menu.cpp
@@ -84,7 +84,8 @@ protected:
     void OnQuit(wxCommandEvent& event);
 #if USE_LOG_WINDOW
     void OnClearLog(wxCommandEvent& event);
-#endif
+    void OnClearLogUpdateUI(wxUpdateUIEvent& event);
+#endif // USE_LOG_WINDOW
 
     void OnAbout(wxCommandEvent& event);
 
@@ -200,7 +201,7 @@ enum
 {
     Menu_File_Quit = wxID_EXIT,
 #if USE_LOG_WINDOW
-    Menu_File_ClearLog,
+    Menu_File_ClearLog = 100,
 #endif
 
     Menu_MenuBar_Toggle = 200,
@@ -266,6 +267,7 @@ BEGIN_EVENT_TABLE(MyFrame, wxFrame)
     EVT_MENU(Menu_File_Quit,     MyFrame::OnQuit)
 #if USE_LOG_WINDOW
     EVT_MENU(Menu_File_ClearLog, MyFrame::OnClearLog)
+    EVT_UPDATE_UI(Menu_File_ClearLog, MyFrame::OnClearLogUpdateUI)
 #endif
 
     EVT_MENU(Menu_Help_About, MyFrame::OnAbout)
@@ -342,6 +344,9 @@ IMPLEMENT_APP(MyApp)
 // main frame
 bool MyApp::OnInit()
 {
+    if ( !wxApp::OnInit() )
+        return false;
+
     // Create the main frame window
     MyFrame* frame = new MyFrame;
 
@@ -379,56 +384,56 @@ MyFrame::MyFrame()
     wxMenu *fileMenu = new wxMenu;
 
     wxMenu *stockSubMenu = new wxMenu;
-    stockSubMenu->Append(wxID_ADD,              "wxID_ADD");
-    stockSubMenu->Append(wxID_APPLY,            "wxID_APPLY");
-    stockSubMenu->Append(wxID_BOLD,             "wxID_BOLD");
-    stockSubMenu->Append(wxID_CANCEL,           "wxID_CANCEL");
-    stockSubMenu->Append(wxID_CLEAR,            "wxID_CLEAR");
-    stockSubMenu->Append(wxID_CLOSE,            "wxID_CLOSE");
-    stockSubMenu->Append(wxID_COPY,             "wxID_COPY");
-    stockSubMenu->Append(wxID_CUT,              "wxID_CUT");
-    stockSubMenu->Append(wxID_DELETE,           "wxID_DELETE");
-    stockSubMenu->Append(wxID_FIND,             "wxID_FIND");
-    stockSubMenu->Append(wxID_REPLACE,          "wxID_REPLACE");
-    stockSubMenu->Append(wxID_BACKWARD,         "wxID_BACKWARD");
-    stockSubMenu->Append(wxID_DOWN,             "wxID_DOWN");
-    stockSubMenu->Append(wxID_FORWARD,          "wxID_FORWARD");
-    stockSubMenu->Append(wxID_UP,               "wxID_UP");
-    stockSubMenu->Append(wxID_HELP,             "wxID_HELP");
-    stockSubMenu->Append(wxID_HOME,             "wxID_HOME");
-    stockSubMenu->Append(wxID_INDENT,           "wxID_INDENT");
-    stockSubMenu->Append(wxID_INDEX,            "wxID_INDEX");
-    stockSubMenu->Append(wxID_ITALIC,           "wxID_ITALIC");
-    stockSubMenu->Append(wxID_JUSTIFY_CENTER,   "wxID_JUSTIFY_CENTER");
-    stockSubMenu->Append(wxID_JUSTIFY_FILL,     "wxID_JUSTIFY_FILL");
-    stockSubMenu->Append(wxID_JUSTIFY_LEFT,     "wxID_JUSTIFY_LEFT");
-    stockSubMenu->Append(wxID_JUSTIFY_RIGHT,    "wxID_JUSTIFY_RIGHT");
-    stockSubMenu->Append(wxID_NEW,              "wxID_NEW");
-    stockSubMenu->Append(wxID_NO,               "wxID_NO");
-    stockSubMenu->Append(wxID_OK,               "wxID_OK");
-    stockSubMenu->Append(wxID_OPEN,             "wxID_OPEN");
-    stockSubMenu->Append(wxID_PASTE,            "wxID_PASTE");
-    stockSubMenu->Append(wxID_PREFERENCES,      "wxID_PREFERENCES");
-    stockSubMenu->Append(wxID_PRINT,            "wxID_PRINT");
-    stockSubMenu->Append(wxID_PREVIEW,          "wxID_PREVIEW");
-    stockSubMenu->Append(wxID_PROPERTIES,       "wxID_PROPERTIES");
-    stockSubMenu->Append(wxID_EXIT,             "wxID_EXIT");
-    stockSubMenu->Append(wxID_REDO,             "wxID_REDO");
-    stockSubMenu->Append(wxID_REFRESH,          "wxID_REFRESH");
-    stockSubMenu->Append(wxID_REMOVE,           "wxID_REMOVE");
-    stockSubMenu->Append(wxID_REVERT_TO_SAVED,  "wxID_REVERT_TO_SAVED");
-    stockSubMenu->Append(wxID_SAVE,             "wxID_SAVE");
-    stockSubMenu->Append(wxID_SAVEAS,           "wxID_SAVEAS");
-    stockSubMenu->Append(wxID_STOP,             "wxID_STOP");
-    stockSubMenu->Append(wxID_UNDELETE,         "wxID_UNDELETE");
-    stockSubMenu->Append(wxID_UNDERLINE,        "wxID_UNDERLINE");
-    stockSubMenu->Append(wxID_UNDO,             "wxID_UNDO");
-    stockSubMenu->Append(wxID_UNINDENT,         "wxID_UNINDENT");
-    stockSubMenu->Append(wxID_YES,              "wxID_YES");
-    stockSubMenu->Append(wxID_ZOOM_100,         "wxID_ZOOM_100");
-    stockSubMenu->Append(wxID_ZOOM_FIT,         "wxID_ZOOM_FIT");
-    stockSubMenu->Append(wxID_ZOOM_IN,          "wxID_ZOOM_IN");
-    stockSubMenu->Append(wxID_ZOOM_OUT,         "wxID_ZOOM_OUT");
+    stockSubMenu->Append(wxID_ADD);
+    stockSubMenu->Append(wxID_APPLY);
+    stockSubMenu->Append(wxID_BOLD);
+    stockSubMenu->Append(wxID_CANCEL);
+    stockSubMenu->Append(wxID_CLEAR);
+    stockSubMenu->Append(wxID_CLOSE);
+    stockSubMenu->Append(wxID_COPY);
+    stockSubMenu->Append(wxID_CUT);
+    stockSubMenu->Append(wxID_DELETE);
+    stockSubMenu->Append(wxID_FIND);
+    stockSubMenu->Append(wxID_REPLACE);
+    stockSubMenu->Append(wxID_BACKWARD);
+    stockSubMenu->Append(wxID_DOWN);
+    stockSubMenu->Append(wxID_FORWARD);
+    stockSubMenu->Append(wxID_UP);
+    stockSubMenu->Append(wxID_HELP);
+    stockSubMenu->Append(wxID_HOME);
+    stockSubMenu->Append(wxID_INDENT);
+    stockSubMenu->Append(wxID_INDEX);
+    stockSubMenu->Append(wxID_ITALIC);
+    stockSubMenu->Append(wxID_JUSTIFY_CENTER);
+    stockSubMenu->Append(wxID_JUSTIFY_FILL);
+    stockSubMenu->Append(wxID_JUSTIFY_LEFT);
+    stockSubMenu->Append(wxID_JUSTIFY_RIGHT);
+    stockSubMenu->Append(wxID_NEW);
+    stockSubMenu->Append(wxID_NO);
+    stockSubMenu->Append(wxID_OK);
+    stockSubMenu->Append(wxID_OPEN);
+    stockSubMenu->Append(wxID_PASTE);
+    stockSubMenu->Append(wxID_PREFERENCES);
+    stockSubMenu->Append(wxID_PRINT);
+    stockSubMenu->Append(wxID_PREVIEW);
+    stockSubMenu->Append(wxID_PROPERTIES);
+    stockSubMenu->Append(wxID_EXIT);
+    stockSubMenu->Append(wxID_REDO);
+    stockSubMenu->Append(wxID_REFRESH);
+    stockSubMenu->Append(wxID_REMOVE);
+    stockSubMenu->Append(wxID_REVERT_TO_SAVED);
+    stockSubMenu->Append(wxID_SAVE);
+    stockSubMenu->Append(wxID_SAVEAS);
+    stockSubMenu->Append(wxID_STOP);
+    stockSubMenu->Append(wxID_UNDELETE);
+    stockSubMenu->Append(wxID_UNDERLINE);
+    stockSubMenu->Append(wxID_UNDO);
+    stockSubMenu->Append(wxID_UNINDENT);
+    stockSubMenu->Append(wxID_YES);
+    stockSubMenu->Append(wxID_ZOOM_100);
+    stockSubMenu->Append(wxID_ZOOM_FIT);
+    stockSubMenu->Append(wxID_ZOOM_IN);
+    stockSubMenu->Append(wxID_ZOOM_OUT);
     fileMenu->AppendSubMenu(stockSubMenu, _T("&Standard items demo"));
 
 #if USE_LOG_WINDOW
@@ -629,11 +634,21 @@ void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 }
 
 #if USE_LOG_WINDOW
+
 void MyFrame::OnClearLog(wxCommandEvent& WXUNUSED(event))
 {
     m_textctrl->Clear();
 }
-#endif
+
+void MyFrame::OnClearLogUpdateUI(wxUpdateUIEvent& event)
+{
+    // if we only enable this item when the log window is empty, we never see
+    // it in the disable state as a message is logged whenever the menu is
+    // opened, so we disable it if there is not "much" text in the window
+    event.Enable( m_textctrl->GetNumberOfLines() > 5 );
+}
+
+#endif // USE_LOG_WINDOW
 
 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 {