BSTR is an ASCII array of characters before "abcdefg \ 0.
Char is a character, and each of the above is a char
Wchar is a wide char, which is a wide character. As the name suggests, the Unicode encoding of the characters stored in two char spaces. This encoding... I cannot give an example. Do not remember ~ Top
2nd floor Enochshen ( Little madman: really good food-shame and courage! ) Reply 23:54:50 Score 0 WCHR is wchar_t BSTR is wchar_t *, char is Char
Wchar_t is the wide character type for Unicode. Double-character representation. The Chinese character is a double-character.
You can use the multibytetowidechar/widechartomultibyte of WIN32API or the mbstowcs/wcstombs series functions of the C Runtime Library to convert top between wchar_t * and char *.
Third floor Masterz ( Www.fruitfruit.com ) Reply 00:08:48 Score 0 Bstrs are wide, double-byte (UNICODE) strings on 32-bit Windows platforms and narrow, single-byte strings on the Apple powermac.
BSTR can only be managed using sysallocstring/sysfreestring,
Wchar_t * can be managed through new/Delete.
Http://msdn.microsoft.com/library/default.asp? Url =/library/en-US/automat/htm/chap7_5alv.asp
BSTR itself stores the length of a string: The length is stored as a 32-bit integer at the memory location preceding the data in the string.
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4th floor Cn2000 ( Cainiao 2000 ) Reply 21:55:28 Score 0 Up... top
5th floor Cn2000 ( Cainiao 2000 ) Reply 10:39:42 Score 0 There is another problem:
Tchar szbuffer [512];
Wsprintf (szbuffer, _ T ("errord "));
Sysallocstring (szbuffer );
The last line cannot be translated.
Error c2664: 'sysallocstring': cannot convert parameter 1 from 'Char [512] 'to 'const unsigned short *'
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