don't complain if file doesn't exist in DeleteFile(); do return false if it exists and we failed to delete it (patch 819530)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@24191 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/changes.txt

@@ -72,6 +72,7 @@ All:
 - added gettext plural forms support to wxLocale (Michael N. Filippov)
 - wxFileName::Normalize(wxPATH_NORM_ALL) doesn't lower filename case any more
 - wxFileName::Normalize(wxPATH_NORM_ENV_VARS) now works
+- check if file exists in wxFileConfig::DeleteFile() (Christian Sturmlechner)
 
 All (GUI):
 

src/common/fileconf.cpp

@@ -1090,8 +1090,11 @@ bool wxFileConfig::DeleteAll()
 {
   CleanUp();
 
-  if ( wxRemove(m_strLocalFile) == -1 )
-    wxLogSysError(_("can't delete user configuration file '%s'"), m_strLocalFile.c_str());
+  if ( wxFile::Exists(m_strLocalFile) && wxRemove(m_strLocalFile) == -1 )
+  {
+      wxLogSysError(_("can't delete user configuration file '%s'"), m_strLocalFile.c_str());
+      return FALSE;
+  }
 
   m_strLocalFile = m_strGlobalFile = wxT("");
   Init();

src/msw/iniconf.cpp

@@ -439,7 +439,7 @@ bool wxIniConfig::DeleteAll()
   wxString strFile = szBuf;
   strFile << '\\' << m_strLocalFilename;
 
-  if ( !wxRemoveFile(strFile) ) {
+  if ( wxFile::Exists(strFile) && !wxRemoveFile(strFile) ) {
     wxLogSysError(_("Can't delete the INI file '%s'"), strFile.c_str());
     return FALSE;
   }