use const char*, not char*, for string literals to avoid gcc warnings

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@51743 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/stc/edit.cpp

@@ -709,7 +709,7 @@ EditProperties::EditProperties (Edit *edit,
 // EditPrint
 //----------------------------------------------------------------------------
 
-EditPrint::EditPrint (Edit *edit, wxChar *title)
+EditPrint::EditPrint (Edit *edit, const wxChar *title)
               : wxPrintout(title) {
     m_edit = edit;
     m_printed = 0;

samples/stc/edit.h

@@ -152,7 +152,7 @@ class EditPrint: public wxPrintout {
 public:
 
     //! constructor
-    EditPrint (Edit *edit, wxChar *title = _T(""));
+    EditPrint (Edit *edit, const wxChar *title = _T(""));
 
     //! event handlers
     bool OnPrintPage (int page);

samples/stc/prefs.cpp

@@ -59,7 +59,7 @@ const CommonInfo g_CommonPrefs = {
 //----------------------------------------------------------------------------
 // keywordlists
 // C++
-char* CppWordlist1 =
+const char* CppWordlist1 =
     "asm auto bool break case catch char class const const_cast "
     "continue default delete do double dynamic_cast else enum explicit "
     "export extern false float for friend goto if inline int long "
@@ -68,9 +68,9 @@ char* CppWordlist1 =
     "struct switch template this throw true try typedef typeid "
     "typename union unsigned using virtual void volatile wchar_t "
     "while";
-char* CppWordlist2 =
+const char* CppWordlist2 =
     "file";
-char* CppWordlist3 =
+const char* CppWordlist3 =
     "a addindex addtogroup anchor arg attention author b brief bug c "
     "class code date def defgroup deprecated dontinclude e em endcode "
     "endhtmlonly endif endlatexonly endlink endverbatim enum example "
@@ -83,11 +83,11 @@ char* CppWordlist3 =
     "verbinclude version warning weakgroup $ @ \"\" & < > # { }";
 
 // Python
-char* PythonWordlist1 =
+const char* PythonWordlist1 =
     "and assert break class continue def del elif else except exec "
     "finally for from global if import in is lambda None not or pass "
     "print raise return try while yield";
-char* PythonWordlist2 =
+const char* PythonWordlist2 =
     "ACCELERATORS ALT AUTO3STATE AUTOCHECKBOX AUTORADIOBUTTON BEGIN "
     "BITMAP BLOCK BUTTON CAPTION CHARACTERISTICS CHECKBOX CLASS "
     "COMBOBOX CONTROL CTEXT CURSOR DEFPUSHBUTTON DIALOG DIALOGEX "

samples/stc/prefs.h

@@ -137,10 +137,10 @@ extern const int g_LanguagePrefsSize;
 //----------------------------------------------------------------------------
 // StyleInfo
 struct StyleInfo {
-    wxChar *name;
-    wxChar *foreground;
-    wxChar *background;
-    wxChar *fontname;
+    const wxChar *name;
+    const wxChar *foreground;
+    const wxChar *background;
+    const wxChar *fontname;
     int fontsize;
     int fontstyle;
     int lettercase;