Home/ Questions/Q 108323
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-11T01:53:37+00:00

How do I get an old VC++ 6.0 MFC program to read and display

  • 0

How do I get an old VC++ 6.0 MFC program to read and display UTF8 in a TextBox or MessageBox? Preferably without breaking any of the file reading and displaying that is currently written in there (fairly substantial).

I read a line into CString strStr, then used this code:

int nLengthNeeded = MultiByteToWideChar(CP_UTF8,0,strStr,1024,0,0); wchar_t * pWCMessage = new wchar_t[ nLengthNeeded ];  MultiByteToWideChar(CP_UTF8,0,strStr,1024,pWCMessage,nLengthNeeded);  nLengthNeeded = MultiByteToWideChar(CP_UTF8,0,'Error Title',50,0,0); wchar_t * pWCTitle = new wchar_t[ nLengthNeeded ]; MultiByteToWideChar(CP_UTF8,0,'Error Title',50,pWCTitle,nLengthNeeded);  MessageBoxW(NULL,pWCMessage,pWCTitle,MB_ICONINFORMATION);

Still not sure how I would get it into a textbox, but it turns out I don’t need to do that anyway.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. I feel like this won’t be helpful, but it’s a starting point… I’m assuming it doesn’t ‘just work’, and I don’t think you want to try to screw around with wacky code pages that may or may not get you what you want.

    How about just using MultiByteToWideChar(CP_UTF8, …) to convert it to utf16 and then calling the W versions of those functions (or defining UNICODE/_UNICODE for the project).

    I know that will work for MessageBox, and I can’t imagine the text box doesn’t have unicode support.

    If you need to get the output back to UTF8 – just use WideCharToMultiByte().

    • 0