Use template instead of Win32Error::twhat.

1 files changed, 3 insertions, 3 deletions

diff --git a/c/common.h b/c/common.h
index 6b29ed5..d84590d 100644
--- a/c/common.h
+++ b/c/common.h
@@ -17,8 +17,8 @@ struct Win32Error : public std::exception
 {
 	Win32Error(DWORD dwErr);
 	~Win32Error();
-	virtual const char* what() const noexcept override;
-	virtual const TCHAR* twhat() const noexcept;
+	template <typename T = char> const T* what() const noexcept;
+
 private:
 	DWORD m_dwErr;
 	char* m_szMsg = NULL;
@@ -69,7 +69,7 @@ inline auto prefer(T... xs)
 	try {
 		return require<F>(xs...);
 	} catch (Win32Error& e) {
-		EBMessageBox(e.twhat(), TEXT("System Error"), MB_ICONWARNING);
+		EBMessageBox(e.what<TCHAR>(), TEXT("System Error"), MB_ICONWARNING);
 		return (decltype(F(std::declval<T>()...)))NULL;
 	}
 }