directgumby

I'm having a bit of trouble with chars, wchars and figuring out the proper conversion from char* to unicode.

1) I'm using the LiveAPI to package up some strings and send into a C++ windows specific (for now) custom max object.

2) Take the symbols from the function called and do a few things:

b) Convert and use some of the symbols for other parts of the function.

With that in mind I'm focused on the strcat problem.

2) I cannot directly send any of the atom_getsym(ap)->s_name into a windows function that requires unicode.

Given that I looked up some info in the VS2010 docs about the char and it notes this about the c++ compiler:

"The C++ compiler treats variables of type char, signed char, and unsigned char as having different types. Variables of type char are promoted to int as if they are type signed char by default, unless the /J compilation option is used. In this case they are treated as type unsigned char and are promoted to int without sign extension."

In looking around on the web I found commontary on CA2CW that is found in the atlconv.h. But, this does not seem to work either.

You thoughts on this would be grealty appreciated..

I'm having a bit of trouble with chars, wchars and figuring out the proper conversion from char* to unicode.  

Here is my current plan:
1) I'm using the LiveAPI to package up some strings and send into a C++ windows specific (for now) custom max object.
2) Take the symbols from the function called and do a few things:
  a) Concat the string with:
     strcat(my_var,atom_getsym(ap)->s_name);
  b) Convert and use some of the symbols for other parts of the function.

With that in mind I'm focused on the strcat problem.
1) It seems to blow up in strcat
2) I cannot directly send any of the atom_getsym(ap)->s_name into a windows function that requires unicode.

Given that I looked up some info in the VS2010 docs about the char and it notes this about the c++ compiler:
"The C++ compiler treats variables of type char, signed char, and unsigned char as having different types. Variables of type char are promoted to int as if they are type signed char by default, unless the /J compilation option is used. In this case they are treated as type unsigned char and are promoted to int without sign extension."

In looking around on the web I found commontary on CA2CW that is found in the atlconv.h.  But, this does not seem to work either.

Would anyone have a suggestion here?
You thoughts on this would be grealty appreciated..

windows-c-vs2010-chars-and-wchars-to-pass-into-windows-apis

I just dug deeper into the docs and noticed the section called "Unicode"...

I'll read through that a bit more and get back to you.

Sorry for the post without noticing that section in the docs.

I may have found my own answer...
I just dug deeper into the docs and noticed the section called "Unicode"...
I'll read through that a bit more and get back to you.

In case anyone else was wondering here is what worked for me based off of the sample in the docs:

unsigned short *cvtbufferDest = NULL; // to-be-allocated data buffer

long cvtbuflen = 0; // length of buffer on output

cvtbufferDest = charset_utf8tounicode(cstrSource,&cvtbuflen);

When passing the data into a unicode required function I cast it to LPCWSTR and seems to work out well.

char *cstrSource = "Text to convert";
unsigned short *cvtbufferDest = NULL; // to-be-allocated data buffer
long cvtbuflen = 0; // length of buffer on output
cvtbufferDest = charset_utf8tounicode(cstrSource,&cvtbuflen);

Windows, C++, VS2010, chars and wchars to pass into windows APIs