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Simple Conversion Question

Started by Sionice Dec 1, 2004 at 1:50 AM 0 replies 450+ views

Original Post

Dec 1, 2004 at 1:50 AM

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 ^_^

Agony

178

Agony

Dec 1, 2004 at 8:03 AM

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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