C ++ char数组未正确转换为std :: string

Question

Developing in win32 context and trying to get the input from my dropdown as a string. strText is the correct value in type char[255] . I'm trying to convert this char array to a string, but it fails

char strText[13];
SendMessage(dropDown, CB_GETLBTEXT, dropDownSelection, reinterpret_cast<LPARAM>(strText));

std::string test(strText);  // outputs W
std::string test2("WORKS"); // outputs WORKS

thanks for any hints

** EDIT **

strText

strText 0x003beeec "M"  char[13]
77 'M'
0 '\0'
79 'O'
0 '\0'
78 'N'
0 '\0'
71 'G'
0 '\0'
79 'O'
0 '\0'
68 'D'
0 '\0'
66 'B'

Answer 1

Most likely, your program is compiled in Unicode mode, so strText receives an UTF-16 encoded string. Since the W character fits in a single byte, the second byte will be 0 (little-endian encoding).

Don't use char when interfacing with the Windows API in Unicode mode. Use wchar_t and and std::wstring instead.

Or read and understand this question and its answers and make up your own mind on how you want to handle strings.

Read more about Unicode in the Windows API . And about Unicode in general .