Fixing memory violations

samples/CPlusPlusWin32/build.bat

@@ -0,0 +1,47 @@
+@echo off
+REM This script requires several tools to be installed for it to work:
+REM cargo (rust): winget install Rustlang.Rustup
+REM Nerdbank.GitVersioning (nbgv): dotnet tool install --global nbgv
+REM C++ Build Tools, typically installed via "Desktop development with C++" workload.
+
+setlocal enabledelayedexpansion
+
+if "%~1"=="" (
+    echo Version number is required.
+    echo Usage: build.bat [version] [extra_args...]
+    exit /b 1
+)
+
+echo.
+echo Building Velopack C Lib with Cargo
+cargo build -p velopack_libc
+
+cd %~dp0
+
+set VSWHERE_PATH="%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere.exe"
+
+echo.
+echo Locating MSBuild using vswhere
+for /f "usebackq tokens=*" %%i in (`%VSWHERE_PATH% -latest -requires Microsoft.Component.MSBuild -find MSBuild\**\Bin\MSBuild.exe`) do (
+  set "MSBUILD_PATH=%%i"
+  goto :buildCpp
+)
+
+:buildCpp
+if not defined MSBUILD_PATH (
+    echo MSBuild not found, make sure Visual Studio is installed with C++ Build Tools.
+    exit /b 1
+)
+
+echo #define UPDATE_URL R"(%~dp0releases)" > constants.h
+
+echo.
+echo Building VeloCppWinSample
+cd %~dp0
+"%MSBUILD_PATH%" VeloCppWinSample.sln
+
+echo #define UPDATE_URL "REPLACE_ME" > constants.h
+
+echo.
+echo Building Velopack Release v%~1
+vpk pack -u VelopackCppWin32Sample -o releases -p x64\Debug -v %* -e VeloCppWinSample.exe