diff --git a/.gitignore b/.gitignore
index a85f1ca..e1d77d3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -202,3 +202,6 @@ Packaging/*.exe
 *.msix
 *.appxbundle
 *.msixbundle
+
+# Auto-generated per-build version counter (BuildCounter.txt is committed)
+version_build.h
diff --git a/BuildCounter.txt b/BuildCounter.txt
new file mode 100644
index 0000000..b8626c4
--- /dev/null
+++ b/BuildCounter.txt
@@ -0,0 +1 @@
+4
diff --git a/TaskbarCalculator.rc b/TaskbarCalculator.rc
index de76033745ca6ca49e3bad035663602788e659d6..abf31f1c4c30521662d6905df7377a590c01eeb9 100644
GIT binary patch
delta 63
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diff --git a/TaskbarCalculator.rc2 b/TaskbarCalculator.rc2
new file mode 100644
index 0000000..0001c6f
--- /dev/null
+++ b/TaskbarCalculator.rc2
@@ -0,0 +1,45 @@
+// Hand-maintained resources — NOT touched by the Visual Studio resource editor.
+// Included from TaskbarCalculator.rc via the #ifndef APSTUDIO_INVOKED region.
+
+#include "version.h"
+
+#define VER_STRINGIZE2(x) #x
+#define VER_STRINGIZE(x)  VER_STRINGIZE2(x)
+#define VER_VERSION_STR \
+    VER_STRINGIZE(VER_MAJOR) "." VER_STRINGIZE(VER_MINOR) "." \
+    VER_STRINGIZE(VER_BUILD) "." VER_STRINGIZE(VER_BUILDNUM)
+
+LANGUAGE LANG_NEUTRAL, SUBLANG_DEFAULT
+
+VS_VERSION_INFO VERSIONINFO
+ FILEVERSION    VER_MAJOR,VER_MINOR,VER_BUILD,VER_BUILDNUM
+ PRODUCTVERSION VER_MAJOR,VER_MINOR,VER_BUILD,VER_BUILDNUM
+ FILEFLAGSMASK 0x3fL
+#ifdef _DEBUG
+ FILEFLAGS 0x1L
+#else
+ FILEFLAGS 0x0L
+#endif
+ FILEOS 0x40004L
+ FILETYPE 0x2L
+ FILESUBTYPE 0x0L
+BEGIN
+    BLOCK "StringFileInfo"
+    BEGIN
+        BLOCK "040004b0"
+        BEGIN
+            VALUE "CompanyName", "Marco Maroni"
+            VALUE "FileDescription", "Taskbar Calculator"
+            VALUE "FileVersion", VER_VERSION_STR
+            VALUE "InternalName", "TaskbarCalculator.exe"
+            VALUE "LegalCopyright", "Copyright (C) 2001-2019"
+            VALUE "OriginalFilename", "TaskbarCalculator.exe"
+            VALUE "ProductName", "Taskbar Calculator"
+            VALUE "ProductVersion", VER_VERSION_STR
+        END
+    END
+    BLOCK "VarFileInfo"
+    BEGIN
+        VALUE "Translation", 0x400, 1200
+    END
+END
diff --git a/TaskbarCalculator.vcxproj b/TaskbarCalculator.vcxproj
index 714472d..3ad673b 100644
--- a/TaskbarCalculator.vcxproj
+++ b/TaskbarCalculator.vcxproj
@@ -129,4 +129,21 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
+  <Target Name="IncrementBuildCounter" BeforeTargets="ResourceCompile">
+    <PropertyGroup>
+      <BuildCounterFile>$(MSBuildProjectDirectory)\BuildCounter.txt</BuildCounterFile>
+      <BuildNumberHeader>$(MSBuildProjectDirectory)\version_build.h</BuildNumberHeader>
+    </PropertyGroup>
+    <ReadLinesFromFile File="$(BuildCounterFile)" Condition="Exists('$(BuildCounterFile)')">
+      <Output TaskParameter="Lines" ItemName="_BuildCounterLines" />
+    </ReadLinesFromFile>
+    <PropertyGroup>
+      <_OldBuildCounter>@(_BuildCounterLines)</_OldBuildCounter>
+      <_OldBuildCounter Condition="'$(_OldBuildCounter)' == ''">0</_OldBuildCounter>
+      <_NewBuildCounter>$([MSBuild]::Add($(_OldBuildCounter), 1))</_NewBuildCounter>
+    </PropertyGroup>
+    <WriteLinesToFile File="$(BuildCounterFile)"  Lines="$(_NewBuildCounter)" Overwrite="true" />
+    <WriteLinesToFile File="$(BuildNumberHeader)" Lines="#define VER_BUILDNUM $(_NewBuildCounter)" Overwrite="true" />
+    <Message Importance="high" Text="TaskbarCalculator build number: $(_NewBuildCounter)" />
+  </Target>
 </Project>
diff --git a/version.h b/version.h
new file mode 100644
index 0000000..82b8edc
--- /dev/null
+++ b/version.h
@@ -0,0 +1,14 @@
+#pragma once
+
+// Semantic version — edit these by hand (NOT in the VS resource editor).
+#define VER_MAJOR 3
+#define VER_MINOR 0
+#define VER_BUILD 1
+
+// Per-build counter. version_build.h is regenerated on every build by the
+// IncrementBuildCounter MSBuild target (BeforeTargets="ResourceCompile"), so it
+// always exists at resource-compile time. The #ifndef is a safety fallback.
+#include "version_build.h"
+#ifndef VER_BUILDNUM
+#  define VER_BUILDNUM 0
+#endif