diff --git a/aegisub/src/aegisublocale.cpp b/aegisub/src/aegisublocale.cpp
index bdf214347..048677e87 100644
--- a/aegisub/src/aegisublocale.cpp
+++ b/aegisub/src/aegisublocale.cpp
@@ -185,7 +185,7 @@ wxArrayInt AegisubLocale::GetAvailableLanguages() {
 
 		// If the locale file doesn't exist then don't list it as an option. 
 		wxString locDir = wxStandardPaths::Get().GetLocalizedResourcesDir(langs[i], wxStandardPathsBase::ResourceCat_Messages);
-		wxFileName file(wxString::Format("%s/%s.mo", locDir.c_str(), GETTEXT_PACKAGE));
+		wxFileName file(wxString::Format("%s/%s.mo", locDir, GETTEXT_PACKAGE));
 		if (lang && file.FileExists()) final.Add(lang->Language);
 	}
 #endif
diff --git a/aegisub/src/ass_dialogue.cpp b/aegisub/src/ass_dialogue.cpp
index 537d56476..286843f6e 100644
--- a/aegisub/src/ass_dialogue.cpp
+++ b/aegisub/src/ass_dialogue.cpp
@@ -220,13 +220,13 @@ wxString AssDialogue::GetData(bool ssa) const {
 	wxString str = wxString::Format(
 		"%s: %s,%s,%s,%s,%s,%d,%d,%d,%s,%s",
 		Comment ? "Comment" : "Dialogue",
-		ssa ? "Marked=0" : wxString::Format("%01d", Layer).c_str(),
-		Start.GetASSFormated().c_str(),
-		End.GetASSFormated().c_str(),
-		s.c_str(), a.c_str(),
+		ssa ? "Marked=0" : wxString::Format("%01d", Layer),
+		Start.GetASSFormated(),
+		End.GetASSFormated(),
+		s, a,
 		Margin[0], Margin[1], Margin[2],
-		e.c_str(),
-		Text.c_str());
+		e,
+		Text);
 
 	// Make sure that final has no line breaks
 	str.Replace("\n", "");
diff --git a/aegisub/src/ass_exporter.cpp b/aegisub/src/ass_exporter.cpp
index 112366091..647553239 100644
--- a/aegisub/src/ass_exporter.cpp
+++ b/aegisub/src/ass_exporter.cpp
@@ -97,7 +97,7 @@ void AssExporter::AddFilter(wxString name) {
 	}
 	
 	// Check
-	if (!filter) throw wxString::Format("Filter not found: %s", name.c_str());
+	if (!filter) throw wxString::Format("Filter not found: %s", name);
 
 	// Add to list
 	Filters.push_back(filter);
@@ -177,5 +177,5 @@ wxString AssExporter::GetDescription(wxString name) {
 			return (*cur)->GetDescription();
 		}
 	}
-	throw wxString::Format("Filter not found: %s", name.c_str());
+	throw wxString::Format("Filter not found: %s", name);
 }
diff --git a/aegisub/src/ass_file.cpp b/aegisub/src/ass_file.cpp
index c0f024929..cf904c8e3 100644
--- a/aegisub/src/ass_file.cpp
+++ b/aegisub/src/ass_file.cpp
@@ -116,7 +116,7 @@ void AssFile::Load(const wxString &_filename,wxString charset,bool addToRecent)
 
 	// Real exception
 	catch (agi::Exception &e) {
-		wxMessageBox(wxString(e.GetChainedMessage().c_str(), wxConvUTF8), "Error loading file", wxICON_ERROR|wxOK);
+		wxMessageBox(lagi_wxString(e.GetChainedMessage()), "Error loading file", wxICON_ERROR|wxOK);
 		return;
 	}
 
diff --git a/aegisub/src/ass_override.cpp b/aegisub/src/ass_override.cpp
index 5a2b91a07..4cc63ad85 100644
--- a/aegisub/src/ass_override.cpp
+++ b/aegisub/src/ass_override.cpp
@@ -340,7 +340,7 @@ std::vector<wxString> tokenize(const wxString &text) {
 			else if (c == ')') {
 				parDepth--;
 				if (parDepth < 0) {
-					wxLogWarning("Unmatched parenthesis near '%s'!\nTag-parsing incomplete.", text.SubString(i, 10).c_str());
+					wxLogWarning("Unmatched parenthesis near '%s'!\nTag-parsing incomplete.", text.SubString(i, 10));
 					return paramList;
 				}
 				else if (parDepth == 0) {
diff --git a/aegisub/src/ass_style.cpp b/aegisub/src/ass_style.cpp
index 43993ef93..4f02b980b 100644
--- a/aegisub/src/ass_style.cpp
+++ b/aegisub/src/ass_style.cpp
@@ -429,11 +429,11 @@ void AssStyle::UpdateData() {
 
 
 	final = wxString::Format("Style: %s,%s,%g,%s,%s,%s,%s,%d,%d,%d,%d,%g,%g,%g,%g,%d,%g,%g,%i,%i,%i,%i,%i",
-					  name.c_str(), font.c_str(), fontsize,
-					  primary.GetASSFormatted(true,false,true).c_str(),
-					  secondary.GetASSFormatted(true,false,true).c_str(),
-					  outline.GetASSFormatted(true,false,true).c_str(),
-					  shadow.GetASSFormatted(true,false,true).c_str(),
+					  name, font, fontsize,
+					  primary.GetASSFormatted(true,false,true),
+					  secondary.GetASSFormatted(true,false,true),
+					  outline.GetASSFormatted(true,false,true),
+					  shadow.GetASSFormatted(true,false,true),
 					  (bold? -1 : 0), (italic ? -1 : 0),
 					  (underline?-1:0),(strikeout?-1:0),
 					  scalex,scaley,spacing,angle,
@@ -491,10 +491,10 @@ wxString AssStyle::GetSSAText() const {
 	f.Replace(",", ";");
 
 	output = wxString::Format("Style: %s,%s,%g,%s,%s,0,%s,%d,%d,%d,%g,%g,%d,%d,%d,%d,0,%i",
-				  n.c_str(), f.c_str(), fontsize,
-				  primary.GetSSAFormatted().c_str(),
-				  secondary.GetSSAFormatted().c_str(),
-				  shadow.GetSSAFormatted().c_str(),
+				  n, f, fontsize,
+				  primary.GetSSAFormatted(),
+				  secondary.GetSSAFormatted(),
+				  shadow.GetSSAFormatted(),
 				  (bold? -1 : 0), (italic ? -1 : 0),
 				  borderstyle,outline_w,shadow_w,align,
 				  Margin[0],Margin[1],Margin[2],encoding);
diff --git a/aegisub/src/audio_provider_hd.cpp b/aegisub/src/audio_provider_hd.cpp
index 50da65452..566a149f1 100644
--- a/aegisub/src/audio_provider_hd.cpp
+++ b/aegisub/src/audio_provider_hd.cpp
@@ -165,7 +165,7 @@ wxString HDAudioProvider::DiskCacheName() {
 	// Try from 00 to 99
 	for (int i=0;i<100;i++) {
 		// File exists?
-		wxString curStringTry = DiskCachePath() + wxString::Format(pattern.c_str(),i);
+		wxString curStringTry = DiskCachePath() + wxString::Format(pattern,i);
 		if (!wxFile::Exists(curStringTry)) return curStringTry;
 	}
 	return "";
diff --git a/aegisub/src/auto4_base.cpp b/aegisub/src/auto4_base.cpp
index dd56d5685..da1174b56 100644
--- a/aegisub/src/auto4_base.cpp
+++ b/aegisub/src/auto4_base.cpp
@@ -104,7 +104,7 @@ namespace Automation4 {
 		lf.lfClipPrecision = CLIP_DEFAULT_PRECIS;
 		lf.lfQuality = ANTIALIASED_QUALITY;
 		lf.lfPitchAndFamily = DEFAULT_PITCH|FF_DONTCARE;
-		_tcsncpy(lf.lfFaceName, style->font.c_str(), 32);
+		wcsncpy(lf.lfFaceName, style->font.wc_str(), 32);
 
 		HFONT thefont = CreateFontIndirect(&lf);
 		if (!thefont) return false;
@@ -311,7 +311,7 @@ namespace Automation4 {
 	///
 	wxString FeatureFilter::GetScriptSettingsIdentifier()
 	{
-		return inline_string_encode(wxString::Format("Automation Settings %s", GetName().c_str()));
+		return inline_string_encode(wxString::Format("Automation Settings %s", GetName()));
 	}
 
 
@@ -899,11 +899,11 @@ namespace Automation4 {
 				}
 				catch (const char *e) {
 					error_count++;
-					wxLogError("Error loading Automation script: %s\n%s", fn.c_str(), e);
+					wxLogError("Error loading Automation script: %s\n%s", fn, e);
 				}
 				catch (...) {
 					error_count++;
-					wxLogError("Error loading Automation script: %s\nUnknown error.", fn.c_str());
+					wxLogError("Error loading Automation script: %s\nUnknown error.", fn);
 				}
 				more = dir.GetNext(&fn);
 			}
@@ -991,7 +991,7 @@ namespace Automation4 {
 				Script *s = (*i)->Produce(filename);
 				if (s) {
 					if (!s->GetLoadedState() && log_errors) {
-						wxLogError(_("An Automation script failed to load. File name: '%s', error reported:"), filename.c_str());
+						wxLogError(_("An Automation script failed to load. File name: '%s', error reported:"), filename);
 						wxLogError(s->GetDescription());
 					}
 					return s;
@@ -1004,7 +1004,7 @@ namespace Automation4 {
 			}
 		}
 		if (log_errors) {
-			wxLogWarning(_("The file was not recognised as an Automation script: %s"), filename.c_str());
+			wxLogWarning(_("The file was not recognised as an Automation script: %s"), filename);
 		}
 		return new UnknownScript(filename);
 	}
diff --git a/aegisub/src/auto4_lua.cpp b/aegisub/src/auto4_lua.cpp
index d0b0cc21f..674549afe 100644
--- a/aegisub/src/auto4_lua.cpp
+++ b/aegisub/src/auto4_lua.cpp
@@ -756,7 +756,7 @@ namespace Automation4 {
 		bool result;
 		if (err) {
 			wxString errmsg(lua_tostring(L, -1), wxConvUTF8);
-			wxLogWarning("Runtime error in Lua macro validation function:\n%s", errmsg.c_str());
+			wxLogWarning("Runtime error in Lua macro validation function:\n%s", errmsg);
 			result = false;
 		} else {
 			result = !!lua_toboolean(L, -1);
@@ -948,7 +948,7 @@ namespace Automation4 {
 		int err = lua_pcall(L, 2, 1, 0);
 		if (err) {
 			wxString errmsg(lua_tostring(L, -1), wxConvUTF8);
-			wxLogWarning("Runtime error in Lua macro validation function:\n%s", errmsg.c_str());
+			wxLogWarning("Runtime error in Lua macro validation function:\n%s", errmsg);
 			lua_pop(L, 1); // remove error message
 			return config_dialog = 0;
 		} else {
diff --git a/aegisub/src/auto4_lua_assfile.cpp b/aegisub/src/auto4_lua_assfile.cpp
index 04642d76a..5e379ded4 100644
--- a/aegisub/src/auto4_lua_assfile.cpp
+++ b/aegisub/src/auto4_lua_assfile.cpp
@@ -342,7 +342,7 @@ namespace Automation4 {
 		} else if (lclass == "info") {
 			GETSTRING(key, "key", "info")
 			GETSTRING(value, "value", "info")
-			result = new AssEntry(wxString::Format("%s: %s", key.c_str(), value.c_str()));
+			result = new AssEntry(wxString::Format("%s: %s", key, value));
 			result->group = "[Script Info]"; // just so it can be read correctly back
 
 		} else if (lclass == "format") {
diff --git a/aegisub/src/auto4_lua_dialog.cpp b/aegisub/src/auto4_lua_dialog.cpp
index 7c387e7af..311d866a6 100644
--- a/aegisub/src/auto4_lua_dialog.cpp
+++ b/aegisub/src/auto4_lua_dialog.cpp
@@ -138,7 +138,7 @@ namespace Automation4 {
 		}
 		lua_pop(L, 1);
 
-		LOG_D("automation/lua/dialog") << "created control: '" << name.c_str() << "', (" << x << "," << y << ")(" << width << "," << height << ", "<< hint.c_str();
+		LOG_D("automation/lua/dialog") << "created control: '" << STD_STR(name) << "', (" << x << "," << y << ")(" << width << "," << height << ", "<< STD_STR(hint);
 	}
 
 
@@ -1007,7 +1007,7 @@ badcontrol:
 			if (buttons.size() > 0) {
 				LOG_D("automation/lua/dialog") << "creating user buttons";
 				for (size_t i = 0; i < buttons.size(); ++i) {
-					LOG_D("automation/lua/dialog") << "button '" << buttons[i].c_str() << "' gets id " << 1001+(wxWindowID)i;
+					LOG_D("automation/lua/dialog") << "button '" << STD_STR(buttons[i]) << "' gets id " << 1001+(wxWindowID)i;
 
 					bs->Add(new wxButton(w, 1001+(wxWindowID)i, buttons[i]));
 				}
@@ -1054,7 +1054,7 @@ badcontrol:
 				LOG_D("automation/lua/dialog") << "default buttons, button 1 bushed, Ok button";
 				lua_pushboolean(L, 1);
 			} else {
-				LOG_D("automation/lua/dialog") << "user button: " << buttons.at(btn-1).c_str();
+				LOG_D("automation/lua/dialog") << "user button: " << STD_STR(buttons.at(btn-1));
 				// button_pushed is index+1 to reserve 0 for Cancel
 				lua_pushstring(L, buttons.at(btn-1).mb_str(wxConvUTF8));
 			}
@@ -1090,7 +1090,7 @@ badcontrol:
 			if (controls[i]->CanSerialiseValue()) {
 				wxString sn = inline_string_encode(controls[i]->name);
 				wxString sv = controls[i]->SerialiseValue();
-				res += wxString::Format("%s:%s|", sn.c_str(), sv.c_str());
+				res += wxString::Format("%s:%s|", sn, sv);
 			}
 		}
 
diff --git a/aegisub/src/command/automation.cpp b/aegisub/src/command/automation.cpp
index 54b786031..d2deaf5c8 100644
--- a/aegisub/src/command/automation.cpp
+++ b/aegisub/src/command/automation.cpp
@@ -80,7 +80,7 @@ struct am_manager : public Command {
 					} catch (const char *e) {
 						wxLogError(e);
 					} catch (...) {
-						wxLogError("An unknown error occurred reloading Automation script '%s'.", scripts[i]->GetName().c_str());
+						wxLogError("An unknown error occurred reloading Automation script '%s'.", scripts[i]->GetName());
 					}
 				}
 
diff --git a/aegisub/src/command/help.cpp b/aegisub/src/command/help.cpp
index 9bc4b075d..7bb34b31d 100644
--- a/aegisub/src/command/help.cpp
+++ b/aegisub/src/command/help.cpp
@@ -100,7 +100,7 @@ struct help_files : public Command {
 	void operator()(agi::Context *c) {
 #ifdef __WXMAC__
 		char *shared_path = agi::util::OSX_GetBundleSharedSupportDirectory();
-		wxString help_path = wxString::Format("%s/doc", wxString(shared_path, wxConvUTF8).c_str());
+		wxString help_path = wxString::Format("%s/doc", wxString(shared_path, wxConvUTF8));
 		agi::util::OSX_OpenLocation(help_path.c_str());
 		free(shared_path);
 #endif
diff --git a/aegisub/src/dialog_automation.cpp b/aegisub/src/dialog_automation.cpp
index d4fcfa5c5..e4a402b69 100644
--- a/aegisub/src/dialog_automation.cpp
+++ b/aegisub/src/dialog_automation.cpp
@@ -215,7 +215,7 @@ void DialogAutomation::OnAdd(wxCommandEvent &evt)
 		const Automation4::ScriptFactory *fact = factories[i];
 		if (fact->GetEngineName().IsEmpty() || fact->GetFilenamePattern().IsEmpty())
 			continue;
-		fnfilter = wxString::Format("%s%s scripts (%s)|%s|", fnfilter.c_str(), fact->GetEngineName().c_str(), fact->GetFilenamePattern().c_str(), fact->GetFilenamePattern().c_str());
+		fnfilter = wxString::Format("%s%s scripts (%s)|%s|", fnfilter, fact->GetEngineName(), fact->GetFilenamePattern(), fact->GetFilenamePattern());
 		catchall << fact->GetFilenamePattern() << ";";
 	}
 #ifdef __WINDOWS__
@@ -323,16 +323,16 @@ void DialogAutomation::OnInfo(wxCommandEvent &evt)
 	info += _("Scripting engines installed:\n");
 	const std::vector<Automation4::ScriptFactory*> &factories = Automation4::ScriptFactory::GetFactories();
 	for (std::vector<Automation4::ScriptFactory*>::const_iterator c = factories.begin(); c != factories.end(); ++c) {
-		info += wxString::Format("- %s (%s)\n", (*c)->GetEngineName().c_str(), (*c)->GetFilenamePattern().c_str());
+		info += wxString::Format("- %s (%s)\n", (*c)->GetEngineName(), (*c)->GetFilenamePattern());
 	}
 
 	if (ei) {
 		info += wxString::Format(_("\nScript info:\nName: %s\nDescription: %s\nAuthor: %s\nVersion: %s\nFull path: %s\nState: %s\n\nFeatures provided by script:\n"),
-			ei->script->GetName().c_str(),
-			ei->script->GetDescription().c_str(),
-			ei->script->GetAuthor().c_str(),
-			ei->script->GetVersion().c_str(),
-			ei->script->GetFilename().c_str(),
+			ei->script->GetName(),
+			ei->script->GetDescription(),
+			ei->script->GetAuthor(),
+			ei->script->GetVersion(),
+			ei->script->GetFilename(),
 			ei->script->GetLoadedState() ? _("Correctly loaded") : _("Failed to load"));
 		for (std::vector<Automation4::Feature*>::iterator f = ei->script->GetFeatures().begin(); f != ei->script->GetFeatures().end(); ++f) {
 			switch ((*f)->GetClass()) {
diff --git a/aegisub/src/dialog_fonts_collector.cpp b/aegisub/src/dialog_fonts_collector.cpp
index ca2ee35be..eddad0d79 100644
--- a/aegisub/src/dialog_fonts_collector.cpp
+++ b/aegisub/src/dialog_fonts_collector.cpp
@@ -536,7 +536,7 @@ bool FontsCollectorThread::ProcessFont(wxString name) {
 	int action = collector->CollectAction->GetSelection();
 
 	// Font name
-	AppendText(wxString::Format(_T("\"%s\"... "),name.c_str()));
+	AppendText(wxString::Format("\"%s\"... ", name));
 
 	// Get font list
 	wxArrayString files = FontFileLister::GetFilesWithFace(name);
@@ -565,14 +565,14 @@ bool FontsCollectorThread::ProcessFont(wxString name) {
 		}
 
 		if (tempResult == 1) {
-			AppendText(wxString::Format(_("* Copied %s.\n"),files[i].c_str()),1);
+			AppendText(wxString::Format(_("* Copied %s.\n"),files[i]),1);
 		}
 		else if (tempResult == 2) {
 			wxFileName fn(files[i]);
-			AppendText(wxString::Format(_("* %s already exists on destination.\n"),fn.GetFullName().c_str()),3);
+			AppendText(wxString::Format(_("* %s already exists on destination.\n"),fn.GetFullName()),3);
 		}
 		else {
-			AppendText(wxString::Format(_("* Failed to copy %s.\n"),files[i].c_str()),2);
+			AppendText(wxString::Format(_("* Failed to copy %s.\n"),files[i]),2);
 			result = false;
 		}
 	}
@@ -662,9 +662,9 @@ void FontsCollectorThread::AddFont(wxString fontname,int mode) {
 	if (fonts.Index(fontname) == wxNOT_FOUND) {
 		fonts.Add(fontname);
 
-		if (mode == 0) AppendText(wxString::Format(_("\"%s\" found on style \"%s\".\n"), fontname.c_str(), curStyle->name.c_str()));
-		else if (mode == 1) AppendText(wxString::Format(_("\"%s\" found on dialogue line \"%d\".\n"), fontname.c_str(), curLine));
-		else AppendText(wxString::Format(_("\"%s\" found.\n"), fontname.c_str()));
+		if (mode == 0) AppendText(wxString::Format(_("\"%s\" found on style \"%s\".\n"), fontname, curStyle->name));
+		else if (mode == 1) AppendText(wxString::Format(_("\"%s\" found on dialogue line \"%d\".\n"), fontname, curLine));
+		else AppendText(wxString::Format(_("\"%s\" found.\n"), fontname));
 	}
 }
 
diff --git a/aegisub/src/dialog_kara_timing_copy.cpp b/aegisub/src/dialog_kara_timing_copy.cpp
index 3ad7561f9..a8f936271 100644
--- a/aegisub/src/dialog_kara_timing_copy.cpp
+++ b/aegisub/src/dialog_kara_timing_copy.cpp
@@ -510,7 +510,7 @@ wxString KaraokeLineMatchDisplay::GetOutputLine()
 	for (size_t i = 0; i < matched_groups.size(); ++i)
 	{
 		MatchGroup &match = matched_groups[i];
-		res = wxString::Format("%s{\\k%d}%s", res.c_str(), match.duration, match.dst.c_str());
+		res = wxString::Format("%s{\\k%d}%s", res, match.duration, match.dst);
 	}
 
 	return res;
diff --git a/aegisub/src/dialog_style_manager.cpp b/aegisub/src/dialog_style_manager.cpp
index 05cbf5bf0..525db0c47 100644
--- a/aegisub/src/dialog_style_manager.cpp
+++ b/aegisub/src/dialog_style_manager.cpp
@@ -435,7 +435,7 @@ void DialogStyleManager::OnCatalogNew (wxCommandEvent &) {
 
 		// Warn about bad characters
 		if (badchars_removed > 0) {
-			wxMessageBox(wxString::Format(_("The specified catalog name contains one or more illegal characters. They have been replaced with underscores instead.\nThe catalog has been renamed to \"%s\"."), name.c_str()),_("Invalid characters"));
+			wxMessageBox(wxString::Format(_("The specified catalog name contains one or more illegal characters. They have been replaced with underscores instead.\nThe catalog has been renamed to \"%s\"."), name),_("Invalid characters"));
 		}
 
 		// Add to list of storages
@@ -462,7 +462,7 @@ void DialogStyleManager::OnCatalogDelete (wxCommandEvent &) {
 	int sel = CatalogList->GetSelection();
 	if (sel != wxNOT_FOUND) {
 		wxString name = CatalogList->GetString(sel);
-		wxString message = wxString::Format(_("Are you sure you want to delete the storage \"%s\" from the catalog?"), name.c_str());
+		wxString message = wxString::Format(_("Are you sure you want to delete the storage \"%s\" from the catalog?"), name);
 		int option = wxMessageBox(message, _("Confirm delete"), wxYES_NO | wxICON_EXCLAMATION , this);
 		if (option == wxYES) {
 			wxRemoveFile(StandardPaths::DecodePath("?user/catalog/" + name + ".sty"));
@@ -543,7 +543,7 @@ void DialogStyleManager::OnCopyToStorage (wxCommandEvent &) {
 		for (list<AssStyle *>::iterator style = Store.style.begin(); style != Store.style.end(); ++style) {
 			if ((*style)->name.CmpNoCase(styleName) == 0) {
 				addStyle = false;
-				if (wxYES == wxMessageBox(wxString::Format("There is already a style with the name \"%s\" on the current storage. Proceed and overwrite anyway?",styleName.c_str()), "Style name collision.", wxYES_NO)) {
+				if (wxYES == wxMessageBox(wxString::Format("There is already a style with the name \"%s\" on the current storage. Proceed and overwrite anyway?",styleName), "Style name collision.", wxYES_NO)) {
 					**style = *styleMap.at(selections[i]);
 					copied.push_back(styleName);
 				}
@@ -578,7 +578,7 @@ void DialogStyleManager::OnCopyToCurrent (wxCommandEvent &) {
 		for (std::vector<AssStyle *>::iterator style = styleMap.begin(); style != styleMap.end(); ++style) {
 			if ((*style)->name.CmpNoCase(styleName) == 0) {
 				addStyle = false;
-				if (wxYES == wxMessageBox(wxString::Format("There is already a style with the name \"%s\" on the current script. Proceed and overwrite anyway?",styleName.c_str()), "Style name collision.", wxYES_NO)) {
+				if (wxYES == wxMessageBox(wxString::Format("There is already a style with the name \"%s\" on the current script. Proceed and overwrite anyway?",styleName), "Style name collision.", wxYES_NO)) {
 					**style = *styleStorageMap.at(selections[i]);
 					copied.push_back(styleName);
 				}
@@ -879,7 +879,7 @@ void DialogStyleManager::OnCurrentImport(wxCommandEvent &) {
 				// Check if there is already a style with that name
 				int test = CurrentList->FindString(styles[selections[i]], false);
 				if (test != wxNOT_FOUND) {
-					int answer = wxMessageBox(wxString::Format("There is already a style with the name \"%s\" on the current script. Overwrite?",styles[selections[i]].c_str()),"Style name collision.",wxYES_NO);
+					int answer = wxMessageBox(wxString::Format("There is already a style with the name \"%s\" on the current script. Overwrite?",styles[selections[i]]),"Style name collision.",wxYES_NO);
 					if (answer == wxYES) {
 						// Overwrite
 						modified = true;
diff --git a/aegisub/src/dialog_version_check.cpp b/aegisub/src/dialog_version_check.cpp
index d0cc6af3b..f9a192db0 100644
--- a/aegisub/src/dialog_version_check.cpp
+++ b/aegisub/src/dialog_version_check.cpp
@@ -342,7 +342,7 @@ void AegisubVersionCheckerThread::DoCheck()
 		GetSVNRevision(),
 		GetIsOfficialRelease()?1:0,
 		GetOSShortName(),
-		GetSystemLanguage().c_str());
+		GetSystemLanguage());
 
 	wxString path = base_updates_path + querystring;
 
diff --git a/aegisub/src/ffmpegsource_common.cpp b/aegisub/src/ffmpegsource_common.cpp
index 1d9e164dd..73246b2a7 100644
--- a/aegisub/src/ffmpegsource_common.cpp
+++ b/aegisub/src/ffmpegsource_common.cpp
@@ -159,12 +159,12 @@ int FFmpegSourceProvider::AskForTrackSelection(const std::map<int,wxString> &Tra
 		TypeName = _("audio");
 	
 	for (std::map<int,wxString>::const_iterator i = TrackList.begin(); i != TrackList.end(); i++) {
-		Choices.Add(wxString::Format(_("Track %02d: %s"), i->first, i->second.c_str()));
+		Choices.Add(wxString::Format(_("Track %02d: %s"), i->first, i->second));
 		TrackNumbers.push_back(i->first);
 	}
 	
-	int Choice = wxGetSingleChoiceIndex(wxString::Format(_("Multiple %s tracks detected, please choose the one you wish to load:"), TypeName.c_str()),
-		wxString::Format(_("Choose %s track"), TypeName.c_str()), Choices);
+	int Choice = wxGetSingleChoiceIndex(wxString::Format(_("Multiple %s tracks detected, please choose the one you wish to load:"), TypeName),
+		wxString::Format(_("Choose %s track"), TypeName), Choices);
 
 	if (Choice < 0)
 		return Choice;
@@ -301,7 +301,7 @@ wxThread::ExitCode FFmpegSourceCacheCleaner::Entry() {
 	wxString cachedirname = StandardPaths::DecodePath("?user/ffms2cache/");
 	wxDir cachedir;
 	if (!cachedir.Open(cachedirname)) {
-		LOG_D("provider/ffmpegsource/cache") << "couldn't open cache directory " << cachedirname.c_str();
+		LOG_D("provider/ffmpegsource/cache") << "couldn't open cache directory " << STD_STR(cachedirname);
 		return (wxThread::ExitCode)1;
 	}
 
@@ -360,7 +360,7 @@ wxThread::ExitCode FFmpegSourceCacheCleaner::Entry() {
 
 		int64_t fsize = i->second.GetSize().GetValue();
 		if (!wxRemoveFile(i->second.GetFullPath())) {
-			LOG_D("provider/ffmpegsource/cache") << "failed to remove file " << i->second.GetFullPath().c_str();
+			LOG_D("provider/ffmpegsource/cache") << "failed to remove file " << STD_STR(i->second.GetFullPath());
 			continue;
 		}
 		cursize -= fsize;
diff --git a/aegisub/src/frame_main.cpp b/aegisub/src/frame_main.cpp
index acd88a2d1..c270d51b5 100644
--- a/aegisub/src/frame_main.cpp
+++ b/aegisub/src/frame_main.cpp
@@ -752,7 +752,7 @@ void FrameMain::OnSubtitlesOpen() {
 				basepath = "";
 			} else {
 				wxLogWarning("Automation Script referenced with unknown location specifier character.\nLocation specifier found: %s\nFilename specified: %s",
-					sfnamel.c_str(), sfnames.c_str());
+					sfnamel, sfnames);
 				continue;
 			}
 			wxFileName sfname(sfnames);
@@ -762,7 +762,7 @@ void FrameMain::OnSubtitlesOpen() {
 				context->local_scripts->Add(Automation4::ScriptFactory::CreateFromFile(sfnames, true));
 			} else {
 				wxLogWarning("Automation Script referenced could not be found.\nFilename specified: %s%s\nSearched relative to: %s\nResolved filename: %s",
-					sfnamel.c_str(), sfnames.c_str(), basepath.c_str(), sfname.GetFullPath().c_str());
+					sfnamel, sfnames, basepath, sfname.GetFullPath());
 			}
 		}
 #endif
diff --git a/aegisub/src/help_button.cpp b/aegisub/src/help_button.cpp
index 4ccd8a5f7..432ab056b 100644
--- a/aegisub/src/help_button.cpp
+++ b/aegisub/src/help_button.cpp
@@ -99,7 +99,7 @@ void HelpButton::OpenPage(const wxString pageID) {
 		docsPath.Replace("\\","/");
 		docsPath = "/" + docsPath;
 #endif
-		wxString path = wxString::Format("file://%s/%s.html",docsPath.c_str(),page.c_str());
+		wxString path = wxString::Format("file://%s/%s.html",docsPath,page);
 		wxLaunchDefaultBrowser(path);
 	}
 }
diff --git a/aegisub/src/main.cpp b/aegisub/src/main.cpp
index 7ea847006..711d86b22 100644
--- a/aegisub/src/main.cpp
+++ b/aegisub/src/main.cpp
@@ -378,7 +378,7 @@ static void UnhandledExeception(bool stackWalk) {
 #endif
 
 		// Inform user of crash.
-		wxMessageBox(wxString::Format(exception_message, filename.c_str()), _("Program error"), wxOK | wxICON_ERROR, NULL);
+		wxMessageBox(wxString::Format(exception_message, filename), _("Program error"), wxOK | wxICON_ERROR, NULL);
 	}
 	else if (LastStartupState) {
 #if wxUSE_STACKWALKER == 1
diff --git a/aegisub/src/mkv_wrap.cpp b/aegisub/src/mkv_wrap.cpp
index 60e7bded6..badb94ac4 100644
--- a/aegisub/src/mkv_wrap.cpp
+++ b/aegisub/src/mkv_wrap.cpp
@@ -88,7 +88,7 @@ void MatroskaWrapper::Open(wxString filename,bool parse) {
 		// Failed parsing
 		if (!file) {
 			delete input;
-			throw wxString("MatroskaParser error: " + wxString(err,wxConvUTF8)).c_str();
+			throw wxString("MatroskaParser error: " + wxString(err,wxConvUTF8));
 		}
 
 		// Parse
diff --git a/aegisub/src/subs_edit_ctrl.cpp b/aegisub/src/subs_edit_ctrl.cpp
index d5c67921a..0663f59d0 100644
--- a/aegisub/src/subs_edit_ctrl.cpp
+++ b/aegisub/src/subs_edit_ctrl.cpp
@@ -820,7 +820,7 @@ void SubsTextEditCtrl::OnContextMenu(wxContextMenuEvent &event) {
 				// Build list
 				wxMenu *subMenu = new wxMenu();
 				for (int i=0;i<nSugs;i++) subMenu->Append(EDIT_MENU_SUGGESTIONS+i,sugs[i]);
-				menu.Append(-1,wxString::Format(_("Spell checker suggestions for \"%s\""),currentWord.c_str()), subMenu);
+				menu.Append(-1,wxString::Format(_("Spell checker suggestions for \"%s\""),currentWord), subMenu);
 			}
 		}
 
diff --git a/aegisub/src/subtitle_format.cpp b/aegisub/src/subtitle_format.cpp
index 9f01955c9..2e644a145 100644
--- a/aegisub/src/subtitle_format.cpp
+++ b/aegisub/src/subtitle_format.cpp
@@ -291,7 +291,7 @@ SubtitleFormat::FPSRational SubtitleFormat::AskForFPS(bool showSMPTE) {
 		wxString vidFPS;
 		if (context->FPS().IsVFR()) vidFPS = "VFR";
 		else vidFPS = wxString::Format("%.3f",context->FPS().FPS());
-		choices.Add(wxString::Format("From video (%s)",vidFPS.c_str()));
+		choices.Add(wxString::Format("From video (%s)",vidFPS));
 	}
 	
 	// Standard FPS values
diff --git a/aegisub/src/subtitle_format_encore.cpp b/aegisub/src/subtitle_format_encore.cpp
index d80045979..dd7f92fdb 100644
--- a/aegisub/src/subtitle_format_encore.cpp
+++ b/aegisub/src/subtitle_format_encore.cpp
@@ -105,7 +105,7 @@ void EncoreSubtitleFormat::WriteFile(wxString _filename,wxString encoding) {
 		AssDialogue *current = dynamic_cast<AssDialogue*>(*cur);
 		if (current && !current->Comment) {
 			++i;
-			file.WriteLineToFile(wxString::Format("%i %s %s %s", i, ft.FromAssTime(current->Start).c_str(), ft.FromAssTime(current->End).c_str(), current->Text.c_str()));
+			file.WriteLineToFile(wxString::Format("%i %s %s %s", i, ft.FromAssTime(current->Start), ft.FromAssTime(current->End), current->Text));
 		}
 	}
 
diff --git a/aegisub/src/subtitle_format_microdvd.cpp b/aegisub/src/subtitle_format_microdvd.cpp
index df7591d29..59d64b55b 100644
--- a/aegisub/src/subtitle_format_microdvd.cpp
+++ b/aegisub/src/subtitle_format_microdvd.cpp
@@ -174,7 +174,7 @@ void MicroDVDSubtitleFormat::WriteFile(wxString filename,wxString encoding) {
 			int start = rate->FrameAtTime(current->Start.GetMS(),agi::vfr::START);
 			int end = rate->FrameAtTime(current->End.GetMS(),agi::vfr::END);
 
-			file.WriteLineToFile(wxString::Format("{%i}{%i}%s",start,end,current->Text.c_str()));
+			file.WriteLineToFile(wxString::Format("{%i}{%i}%s",start,end,current->Text));
 		}
 	}
 
diff --git a/aegisub/src/text_file_writer.cpp b/aegisub/src/text_file_writer.cpp
index 3c2b4e834..d0a377e02 100644
--- a/aegisub/src/text_file_writer.cpp
+++ b/aegisub/src/text_file_writer.cpp
@@ -57,7 +57,7 @@ TextFileWriter::TextFileWriter(wxString const& filename, wxString encoding)
 , conv() {
 	if (encoding.empty()) encoding = lagi_wxString(OPT_GET("App/Save Charset")->GetString());
 	if (encoding.Lower() != wxSTRING_ENCODING)
-		conv.reset(new agi::charset::IconvWrapper(wxSTRING_ENCODING, encoding.c_str(), true));
+		conv.reset(new agi::charset::IconvWrapper(wxSTRING_ENCODING, encoding.utf8_str(), true));
 
 	// Write the BOM
 	try {
diff --git a/aegisub/src/utils.cpp b/aegisub/src/utils.cpp
index 85aa9199b..206d6bb6e 100644
--- a/aegisub/src/utils.cpp
+++ b/aegisub/src/utils.cpp
@@ -437,7 +437,7 @@ void RestartAegisub() {
 	char *bundle_path = agi::util::OSX_GetBundlePath();
 	char *support_path = agi::util::OSX_GetBundleSupportFilesDirectory();
 	if (!bundle_path || !support_path) return; // oops
-	wxString exec = wxString::Format("\"%s/MacOS/restart-helper\" /usr/bin/open -n \"%s\"'", wxString(support_path, wxConvUTF8).c_str(), wxString(bundle_path, wxConvUTF8).c_str());
+	wxString exec = wxString::Format("\"%s/MacOS/restart-helper\" /usr/bin/open -n \"%s\"'", wxString(support_path, wxConvUTF8), wxString(bundle_path, wxConvUTF8));
 	LOG_I("util/restart/exec") << exec;
 	wxExecute(exec);
 	free(bundle_path);
diff --git a/aegisub/src/video_context.cpp b/aegisub/src/video_context.cpp
index a76e4c700..421836807 100644
--- a/aegisub/src/video_context.cpp
+++ b/aegisub/src/video_context.cpp
@@ -535,7 +535,7 @@ void VideoContext::LoadTimecodes(wxString filename) {
 		config::mru->Remove("Timecodes", STD_STR(filename));
 	}
 	catch (const agi::vfr::Error& e) {
-		wxLogError("Timecode file parse error: %s", e.GetMessage().c_str());
+		wxLogError("Timecode file parse error: %s", e.GetMessage());
 	}
 }
 void VideoContext::SaveTimecodes(wxString filename) {
@@ -571,12 +571,12 @@ void VideoContext::OnVideoError(VideoProviderErrorEvent const& err) {
 	wxLogError(
 		"Failed seeking video. The video file may be corrupt or incomplete.\n"
 		"Error message reported: %s",
-		lagi_wxString(err.GetMessage()).c_str());
+		lagi_wxString(err.GetMessage()));
 }
 void VideoContext::OnSubtitlesError(SubtitlesProviderErrorEvent const& err) {
 	wxLogError(
 		"Failed rendering subtitles. Error message reported: %s",
-		lagi_wxString(err.GetMessage()).c_str());
+		lagi_wxString(err.GetMessage()));
 }
 
 void VideoContext::OnExit() {
diff --git a/aegisub/src/video_display.cpp b/aegisub/src/video_display.cpp
index eccf33414..55032b257 100644
--- a/aegisub/src/video_display.cpp
+++ b/aegisub/src/video_display.cpp
@@ -191,14 +191,14 @@ void VideoDisplay::UploadFrameData(FrameReadyEvent &evt) {
 			"Failed to initialize video display. Closing other running "
 			"programs and updating your video card drivers may fix this.\n"
 			"Error message reported: %s",
-			err.GetMessage().c_str());
+			err.GetMessage());
 		con->videoController->Reset();
 	}
 	catch (const VideoOutRenderException& err) {
 		wxLogError(
 			"Could not upload video frame to graphics card.\n"
 			"Error message reported: %s",
-			err.GetMessage().c_str());
+			err.GetMessage());
 	}
 	Render();
 }
@@ -258,14 +258,14 @@ catch (const VideoOutException &err) {
 	wxLogError(
 		"An error occurred trying to render the video frame on the screen.\n"
 		"Error message reported: %s",
-		err.GetMessage().c_str());
+		err.GetMessage());
 	con->videoController->Reset();
 }
 catch (const OpenGlException &err) {
 	wxLogError(
 		"An error occurred trying to render visual overlays on the screen.\n"
 		"Error message reported: %s",
-		err.GetMessage().c_str());
+		err.GetMessage());
 	con->videoController->Reset();
 }
 catch (const char *err) {
diff --git a/aegisub/src/video_provider_yuv4mpeg.cpp b/aegisub/src/video_provider_yuv4mpeg.cpp
index d5428e98a..75dfee062 100644
--- a/aegisub/src/video_provider_yuv4mpeg.cpp
+++ b/aegisub/src/video_provider_yuv4mpeg.cpp
@@ -255,7 +255,7 @@ void YUV4MPEGVideoProvider::ParseFileHeader(const std::vector<wxString>& tags) {
 				throw VideoOpenError("ParseFileHeader: invalid or unknown interlacing mode");
 		}
 		else
-			LOG_D("provider/video/yuv4mpeg") << "Unparsed tag: " << tags[i].c_str();
+			LOG_D("provider/video/yuv4mpeg") << "Unparsed tag: " << STD_STR(tags[i]);
 	}
 
 	// The point of all this is to allow multiple YUV4MPEG2 headers in a single file