Test

shared/VersionInfo.c

@@ -0,0 +1,44 @@
+#include "stdafx.h"
+#include "VersionInfo.h"
+
+static BOOL _loadedOwnVersion = FALSE;
+static LPWSTR _version;
+
+HRESULT GetOwnVersion(LPWSTR *version) {
+	if (!_loadedOwnVersion) {
+		_loadedOwnVersion = TRUE;
+
+		LPWSTR filename;
+		GetOwnFileName(&filename);
+
+		DWORD verHandle;
+		DWORD verInfoSize = GetFileVersionInfoSize(filename, &verHandle);
+		if (verInfoSize == 0) {
+			LocalFree(filename);
+			return HRESULT_FROM_WIN32(GetLastError());
+		}
+
+		LPVOID verInfo = LocalAlloc(LPTR, verInfoSize);
+		if (!GetFileVersionInfo(filename, verHandle, verInfoSize, verInfo)) {
+			LocalFree(filename);
+			LocalFree(verInfo);
+			return HRESULT_FROM_WIN32(GetLastError());
+		}
+
+		LocalFree(filename);
+
+		LPWSTR value;
+		UINT size;
+		if (!VerQueryValue(verInfo, L"\\StringFileInfo\\040904B0\\ProductVersion", (LPVOID *)&value, &size)) {
+			LocalFree(verInfo);
+			return HRESULT_FROM_WIN32(GetLastError());
+		}
+
+		_version = (LPWSTR)LocalAlloc(LPTR, (wcslen(value) + 1) * sizeof(WCHAR));
+		wcscpy(_version, value);
+		LocalFree(verInfo);
+	}
+
+	*version = _version;
+	return _version == NULL ? E_FAIL : S_OK;
+}