Re: getting the text of an edit control (edit box)

I suspect you are still trying to learn this stuff piecemeal, rather
than taking time to really learn it. Very dangerous and a likely waste
of time in the long run. But I answered some of your questions below.


On Tue, 21 Jun 2005 23:28:13 +0200, "Matthias Heise" <nagilo@xxxxxx>
wrote:

>Thanks for this important help.
>
>I was blind. I'm getting the text over the network from a normal machine and

I think "big" Windows is a generally accepted term for 9x/NT/2K/XP.
Not a great term, but about as good as any I've seen.


>put it into the edit box. For this step I used mbstowcs. It's logically that
>I have to use wcstombs in return.
>
>One question for understanding: Normal windows machines are using characters
>with 4 bytes and WinCE only 2 bytes?

"Big" Windows _applications_ use non-Unicode by default. That means
char, which is 2 byte. But many applications choose to use UNICODE.
Windows CE always uses UNICODE, with limited support for char. That
means WCHAR, which is 4 byte. If you are using the same source code
for both, you should use TCHAR, which switches. You can definitely
find good descriptions of this using google.


>
>Thanks
>
>Matthias
>
>_________________
>The code is as follows:
>
>unsigned short* str = (unsigned short*)malloc(512);

Why are you using unsigned short, rather than WCHAR?


>char *text = (char *)malloc(256);
>
>// conversion of multibyte characters to WinCE used wide characters
>mbstowcs((unsigned
>short*)str,currentElementValue,strlen(currentElementValue)+1); //
>currentElementID is given as char*
>SendMessage (hWndTextbox, WM_SETTEXT, 256, (LPARAM) (unsigned short*) str);
>// set the correct text in the edit box

Why the cast to unsigned short?


>
>SendMessage (hWndTextbox, WM_GETTEXT, 256, (LPARAM) textBuffer); // gets
>the text from the edit box (after the user edit)

I suggest using SetWindowText, rather than SendMessage so the compiler
can do proper type checking.


>
>// reconversion of wide characters to multibyte characters
>wcstombs(text, (unsigned short*) &textBuffer, 256);

Why are you working so hard to convert strings back and forth, rather
than using them in "native" form?


>
>free(str);
>free(text);
>

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