Source codes

1 files changed, 48 insertions, 0 deletions

diff --git a/Examples/main/miscUtils.cpp b/Examples/main/miscUtils.cpp
new file mode 100644
index 0000000..3ebda20
--- /dev/null
+++ b/Examples/main/miscUtils.cpp
@@ -0,0 +1,48 @@
+#include "miscUtils.h"
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
+std::string utf8( const std::wstring& utf16 )
+{
+	int count = WideCharToMultiByte( CP_UTF8, 0, utf16.c_str(), (int)utf16.length(), nullptr, 0, nullptr, nullptr );
+	std::string str( count, 0 );
+	WideCharToMultiByte( CP_UTF8, 0, utf16.c_str(), -1, &str[ 0 ], count, nullptr, nullptr );
+	return str;
+}
+
+std::wstring utf16( const std::string& u8 )
+{
+	int count = MultiByteToWideChar( CP_UTF8, 0, u8.c_str(), (int)u8.length(), nullptr, 0 );
+	std::wstring str( count, 0 );
+	MultiByteToWideChar( CP_UTF8, 0, u8.c_str(), (int)u8.length(), &str[ 0 ], count );
+	return str;
+}
+
+namespace
+{
+	wchar_t* formatMessage( HRESULT hr )
+	{
+		wchar_t* err;
+		if( FormatMessage( FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
+			NULL,
+			hr,
+			MAKELANGID( LANG_NEUTRAL, SUBLANG_DEFAULT ),
+			(LPTSTR)&err,
+			0,
+			NULL ) )
+			return err;
+		return nullptr;
+	}
+}
+
+void printError( const char* what, HRESULT hr )
+{
+	const wchar_t* err = formatMessage( hr );
+	if( nullptr != err )
+	{
+		fwprintf( stderr, L"%S: %s\n", what, err );
+		LocalFree( (HLOCAL)err );
+	}
+	else
+		fprintf( stderr, "%s: error code %i (0x%08X)\n", what, hr, hr );
+}
\ No newline at end of file