Ok i am trying to brake down the clipboard-responsible code so that i can add unicode clipboard support.. the news are not so good.

First, i saw that the code for sending text to the clipboard is

int clipboardWriteFromAt(int count, int byteArrayIndex, int startIndex)

sqWin32Window.c

The thing is that we are trying to create a fully Unicode VM...this means that the characters that are sent to the VM are Unicode (> 256) and we are using a unicode TT font to render them.

Now... when i evaluate this

c:=Clipboard new.
c primitiveClipboardText:'α' "α is unicode char 945"

the clipboardWriteFromAt is never invoked.

That's because in

interp.c

sqInt primitiveClipboardText(void)

the following expression is evaluated to TRUE

if (!(((s & 1) == 0) && (((((usqInt) (longAt(s))) >> 8) & 15) >= 8))) {
   /* begin primitiveFail */
   successFlag = 0;
   printf("primitive failed 1\n");    "This printf is mine"
   return null;
  }

Now what in earth is THIS?

(!(((s & 1) == 0) && (((((usqInt) (longAt(s))) >> 8) & 15) >= 8)))

Also further down it has

if (successFlag) {
   sz = stSizeOf(s);
   clipboardWriteFromAt(sz, s + BaseHeaderSize, 0);
   /* begin pop: */
   stackPointer -= 1 * BytesPerWord;
  }

where stSizeOf goes down to assembly...

I think i am starting to abandon the fully-unicode vision and follow your instructions from the start to use code pages and preserve the internal representation of Squeak...

I don't think that i will be able to make everything unicode in a life time (does it worth it?)...

Christos.