.hpp instead of .h for C++ headers

1 files changed, 26 insertions, 0 deletions

diff --git a/error.hpp b/error.hpp
new file mode 100644
index 0000000..2ea7f85
--- /dev/null
+++ b/error.hpp
@@ -0,0 +1,26 @@
+#pragma once
+
+#include <Windows.h>
+
+#include <system_error>
+
+typedef std::system_error Error;
+
+namespace error
+{
+    inline void raise(const char* function_name)
+    {
+        const auto ec = GetLastError();
+        throw std::system_error(ec, std::system_category(), function_name);
+    }
+
+    void report(const Error& e)
+    {
+        MessageBoxA(NULL, e.what(), NULL, MB_OK);
+    }
+
+    int get_code(const Error& e)
+    {
+        return e.code().value();
+    }
+}