外文字符替换为“？”

Question

I am working on a program which takes file/folder names as input. Currently when I try to run a file which has got foreign language character in its name it is replaced by a ? For each of its character. I am running my exe on command prompt so trying to run the particular file results in an error. When I am using DIR on command prompt it displays ? For each character of the file name. Is there any way to display the actual foreign language characters in command prompt as I believe that could be causing my exe not to work any of those files. This is the text that I am trying to read - 科普書籍推展教案 which is being replaced by ? on the console.

Answer 1

The command prompt can only display characters in your current ACP. So, if you have files with names outside the ACP, you're going to see ?. You can use changecp to pick a different CP, but here is no code page for full Unicode in the DOS box.

Inside your code, you need to learn to use 'W' API to work with full unicode pathnames. The safest thing is to just #define _UNICODE and use it uniformly.