Enable C++20 features

Author: SinghRajenM

NppJSONViewer/NPPJSONViewer.sln

@@ -1,7 +1,7 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Version 16
-VisualStudioVersion = 16.0.31205.134
+# Visual Studio Version 17
+VisualStudioVersion = 17.3.32804.467
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "NPPJSONViewer", "NppJsonViewer\NPPJSONViewer.vcxproj", "{1590D7CD-7D3A-4AB7-A355-EE02F7FB987D}"
 EndProject

NppJSONViewer/NppJsonViewer/JSONDialog.cpp

@@ -45,7 +45,7 @@ HTREEITEM JSONDialog::initTree(HWND hWndDlg)
 	tvinsert.hInsertAfter=TVI_ROOT;
 	tvinsert.item.mask=TVIF_TEXT;
 
-	tvinsert.item.pszText=L"JSON";
+	tvinsert.item.pszText = const_cast<wchar_t*>(L"JSON");
 	HTREEITEM item=(HTREEITEM)SendDlgItemMessage(hWndDlg,IDC_TREE,TVM_INSERTITEM,0,(LPARAM)&tvinsert);
 
 	return item;		

NppJSONViewer/NppJsonViewer/NPPJSONViewer.vcxproj

@@ -136,6 +136,7 @@
       <SDLCheck>true</SDLCheck>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <TreatWarningAsError>true</TreatWarningAsError>
+      <LanguageStandard>stdcpp20</LanguageStandard>
     </ClCompile>
     <Link>
       <AdditionalDependencies>shlwapi.lib;comctl32.lib;Version.lib;%(AdditionalDependencies)</AdditionalDependencies>
@@ -156,6 +157,7 @@
       <SDLCheck>true</SDLCheck>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <TreatWarningAsError>true</TreatWarningAsError>
+      <LanguageStandard>stdcpp20</LanguageStandard>
     </ClCompile>
     <Link>
       <AdditionalDependencies>shlwapi.lib;comctl32.lib;Version.lib;%(AdditionalDependencies)</AdditionalDependencies>
@@ -172,6 +174,7 @@
       <SDLCheck>true</SDLCheck>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <TreatWarningAsError>true</TreatWarningAsError>
+      <LanguageStandard>stdcpp20</LanguageStandard>
     </ClCompile>
     <Link>
       <AdditionalDependencies>shlwapi.lib;comctl32.lib;Version.lib;%(AdditionalDependencies)</AdditionalDependencies>
@@ -191,6 +194,7 @@
       <SDLCheck>true</SDLCheck>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <TreatWarningAsError>true</TreatWarningAsError>
+      <LanguageStandard>stdcpp20</LanguageStandard>
     </ClCompile>
     <Link>
       <AdditionalDependencies>shlwapi.lib;comctl32.lib;Version.lib;%(AdditionalDependencies)</AdditionalDependencies>
@@ -209,6 +213,7 @@
       <SDLCheck>true</SDLCheck>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <TreatWarningAsError>true</TreatWarningAsError>
+      <LanguageStandard>stdcpp20</LanguageStandard>
     </ClCompile>
     <Link>
       <AdditionalDependencies>shlwapi.lib;comctl32.lib;Version.lib;%(AdditionalDependencies)</AdditionalDependencies>
@@ -231,6 +236,7 @@
       <SDLCheck>true</SDLCheck>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <TreatWarningAsError>true</TreatWarningAsError>
+      <LanguageStandard>stdcpp20</LanguageStandard>
     </ClCompile>
     <Link>
       <AdditionalDependencies>shlwapi.lib;comctl32.lib;Version.lib;%(AdditionalDependencies)</AdditionalDependencies>

NppJSONViewer/NppJsonViewer/PluginDefinition.cpp

@@ -145,7 +145,7 @@ void commandMenuCleanUp()
 //
 // This function help you to initialize your plugin commands
 //
-bool setCommand(size_t index, TCHAR* cmdName, PFUNCPLUGINCMD pFunc, ShortcutKey* sk, bool check0nInit)
+bool setCommand(size_t index, const TCHAR* cmdName, PFUNCPLUGINCMD pFunc, ShortcutKey* sk, bool check0nInit)
 {
   if (index >= nbFunc)
     return false;
@@ -179,7 +179,7 @@ void showJSONDialog(char* json)
     data.uMask = DWS_DF_CONT_LEFT;
 
     data.pszModuleName = jsonDialog.getPluginFileName();
-    data.pszName = L"JSON Viewer";
+    data.pszName = const_cast<wchar_t*>(L"JSON Viewer");
 
     // the dlgDlg should be the index of funcItem where the current function pointer is
     data.dlgID = 0;

NppJSONViewer/NppJsonViewer/PluginDefinition.h

@@ -64,7 +64,7 @@ void commandMenuCleanUp();
 //
 // Function which sets your command 
 //
-bool setCommand(size_t index, TCHAR *cmdName, PFUNCPLUGINCMD pFunc, ShortcutKey *sk = NULL, bool check0nInit = false);
+bool setCommand(size_t index, const TCHAR *cmdName, PFUNCPLUGINCMD pFunc, ShortcutKey *sk = NULL, bool check0nInit = false);
 
 
 //