Source codes

1 files changed, 20 insertions, 0 deletions

diff --git a/ComLightLib/Exception.hpp b/ComLightLib/Exception.hpp
new file mode 100644
index 0000000..57c1b78
--- /dev/null
+++ b/ComLightLib/Exception.hpp
@@ -0,0 +1,20 @@
+#pragma once
+
+namespace ComLight
+{
+	class Exception : public std::runtime_error
+	{
+		// I don't like C++ exceptions too much, but for some cases they are useful.
+		// You can throw ComLight::Exception from constructor, or from FinalConstruct() method, the library will catch & return the code from the class factory function.
+		// Unfortunately, for interface methods this doesn't work, the C++ parts of the library can't catch them without very complex trickery like code generation.
+		// You can still use this class in methods, but you'll need to catch them manually near the API boundary or the app will crash.
+		// C++ doesn't have an ABI, the framework can't catch C++ exception across the modules.
+		const HRESULT m_code;
+
+	public:
+
+		Exception( HRESULT hr ) : runtime_error( "ComLight HRESULT exception" ), m_code( hr ) { }
+
+		HRESULT code() const { return m_code; }
+	};
+}
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