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Sionice

Simple Conversion Question

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Trying to convert a WCHAR to a char *. I've just never dealt with WCHAR's before. assume I have this code char *myName = "blah"; WCHAR wstr[MAX_PATH] = myName; I get this error for obvious reasons: error C2664: 'LoadObjectFromFile' : cannot convert parameter 3 from 'unsigned short *[260]' to 'unsigned short *' thanks ^_^

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MultiByteToWideChar() and WideCharToMultiByte() are what you would use (in Windows, at least) to convert back and forth. Here's some code that's just slightly modified from what I've used before:
void LPSTR_To_LPWSTR(LPCSTR str, LPWSTR& wstr)
{
int StringLength;
int BufferLength;
StringLength = strlen(str);
BufferLength = MultiByteToWideChar(CP_THREAD_ACP, 0, str, StringLength, NULL, 0);
wstr = new WCHAR[BufferLength];
MultiByteToWideChar(CP_THREAD_ACP, 0, str, StringLength, wstr, BufferLength);
}

void LPWSTR_To_LPSTR(LPCWSTR wstr, LPSTR& str)
{
int StringLength;
int BufferLength;
StringLength = wcslen(wstr) + 1;
BufferLength = WideCharToMultiByte(CP_THREAD_ACP, 0, wstr, StringLength, NULL, 0, NULL, NULL);
str = new CHAR[BufferLength];
WideCharToMultiByte(CP_THREAD_ACP, 0, wstr, StringLength, str, BufferLength, NULL, NULL);
}


I'm sure there are other ways to do this too, such as through the STL with std::string and std::wstring and stuff that I haven't found yet, but this is the only way that I know of at the moment; it gets the job done.

[edit]Don't forget to delete the memory when you're done with it. I suppose you could modify the functions to just copy to buffers that already exist, in order to be able to use statically allocated memory instead... That might be more useful.[/edit]

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