Error creating C++ Project

Nip3x_TM · March 1, 2024, 1:41pm

I have never seen this error message before could someone help me fix it.

If I rebuild in visual studio it has 3 errors and the project says it already exists even though it wasn’t created and nothing is in the file location.

After rebuilding the project in unreal:

Errors building the C++ code:

Running

[1/11] Resource Default.rc2
[2/11] Compile SharedPCH.Engine.ShadowErrors.cpp
D:\Unreal\UE_5.1.0\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): error C2440: ‘’: cannot convert from ‘const From *’ to ‘TStringConversion<TStringConvert<From,To>,128>’
with
[
From=TCHAR
]
D:\Unreal\UE_5.1.0\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: ‘TStringConversion<TStringConvert<From,To>,128>::TStringConversion’: no overloaded function could convert all the argument types
with
[
From=TCHAR,
To=ANSICHAR
]
D:\Unreal\UE_5.1.0\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(689): note: could be ‘TStringConversion<TStringConvert<From,To>,128>::TStringConversion(const StringConv::FUnused *)’
with
[
From=TCHAR,
To=ANSICHAR
]
D:\Unreal\UE_5.1.0\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: ‘TStringConversion<TStringConvert<From,To>,128>::TStringConversion(const StringConv::FUnused *)’: cannot convert argument 1 from ‘const From *’ to ‘const StringConv::FUnused *’
with
[
From=TCHAR,
To=ANSICHAR
]
and
[
From=TCHAR
]
D:\Unreal\UE_5.1.0\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or parenthesized function-style cast
D:\Unreal\UE_5.1.0\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(737): note: or ‘TStringConversion<TStringConvert<From,To>,128>::TStringConversion(FromRangeType &&)’
with
[
From=TCHAR,
To=ANSICHAR
]
D:\Unreal\UE_5.1.0\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(698): note: or ‘TStringConversion<TStringConvert<From,To>,128>::TStringConversion(const SrcBufferType *,int32)’
with
[
From=TCHAR,
To=ANSICHAR
]
D:\Unreal\UE_5.1.0\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(677): note: or ‘TStringConversion<TStringConvert<From,To>,128>::TStringConversion(const SrcBufferType *)’
with
[
From=TCHAR,
To=ANSICHAR
]
D:\Unreal\UE_5.1.0\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: while trying to match the argument list ‘(const From *)’
with
[
From=TCHAR
]
D:\Unreal\UE_5.1.0\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: the template instantiation context (the oldest one first) is
D:\Unreal\UE_5.1.0\UE_5.0\Engine\Source\Runtime\Core\Public\Misc\SecureHash.h(75): note: see reference to function template instantiation ‘auto StringCast<ANSICHAR,128,TCHAR>(const From *)’ being compiled
with
[
From=TCHAR
]
D:\Unreal\UE_5.1.0\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): error C2440: ‘’: cannot convert from ‘const From *’ to ‘TStringConversion<TStringConvert<From,To>,128>’
with
[
From=ANSICHAR
]
D:\Unreal\UE_5.1.0\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: ‘TStringConversion<TStringConvert<From,To>,128>::TStringConversion’: no overloaded function could convert all the argument types
with
[
From=ANSICHAR,
To=TCHAR
]
D:\Unreal\UE_5.1.0\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(689): note: could be ‘TStringConversion<TStringConvert<From,To>,128>::TStringConversion(const StringConv::FUnused *)’
with
[
From=ANSICHAR,
To=TCHAR
]
D:\Unreal\UE_5.1.0\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: ‘TStringConversion<TStringConvert<From,To>,128>::TStringConversion(const StringConv::FUnused *)’: cannot convert argument 1 from ‘const From *’ to ‘const StringConv::FUnused *’
with
[
From=ANSICHAR,
To=TCHAR
]
and
[
From=ANSICHAR
]
D:\Unreal\UE_5.1.0\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or parenthesized function-style cast
D:\Unreal\UE_5.1.0\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(737): note: or ‘TStringConversion<TStringConvert<From,To>,128>::TStringConversion(FromRangeType &&)’
with
[
From=ANSICHAR,
To=TCHAR
]
D:\Unreal\UE_5.1.0\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(698): note: or ‘TStringConversion<TStringConvert<From,To>,128>::TStringConversion(const SrcBufferType *,int32)’
with
[
From=ANSICHAR,
To=TCHAR
]
D:\Unreal\UE_5.1.0\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(677): note: or ‘TStringConversion<TStringConvert<From,To>,128>::TStringConversion(const SrcBufferType *)’
with
[
From=ANSICHAR,
To=TCHAR
]
D:\Unreal\UE_5.1.0\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: while trying to match the argument list ‘(const From *)’
with
[
From=ANSICHAR
]
D:\Unreal\UE_5.1.0\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: the template instantiation context (the oldest one first) is
D:\Unreal\UE_5.1.0\UE_5.0\Engine\Source\Runtime\TypedElementFramework\Public\Elements\Framework\TypedElementData.h(64): note: see reference to function template instantiation ‘auto StringCast<TCHAR,128,ANSICHAR>(const From *)’ being compiled
with
[
From=ANSICHAR
]

D-ZarStar · June 8, 2024, 6:01am

Don’t suppose you had any luck with this?

kainn98 · December 5, 2024, 11:43pm

man it would be cool if someone could figure this out.
currently cannot compile at all in VS because of this error

Dumple1 · December 9, 2024, 6:19pm

This error occurs due to a type mismatch during conversion between character strings of different types (TCHAR and ANSICHAR) in Unreal Engine.

Check if your project is using the correct character set (Unicode or Multi-Byte). In Unreal Engine, TCHAR is typically Unicode (wide characters).
In Visual Studio, go to:
Project Properties > Configuration Properties > General > Character Set
Select Use Unicode Character Set.
The error points to the use of StringCast or a similar function. Verify that the arguments being passed are compatible types (TCHAR or ANSICHAR).

This is from GPT4.0