MessageBoxW doesn't display the character 095h

Index > Windows > MessageBoxW doesn't display the character 095h

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yoshimitsu

Joined: 07 Jul 2011
Posts: 96

yoshimitsu 04 Jul 2013, 16:15

Hi,
I'm still very unfamiliar with unicode, so I don't know what's happening here:

Code:

include 'win32ax.inc'
.code
  start:
        invoke  MessageBox,HWND_DESKTOP,x1,NULL,MB_OK
        invoke  MessageBoxW,HWND_DESKTOP,x2,NULL,MB_OK
        invoke  ExitProcess,0
.data
        x1 db '•',0
        x2 du '•',0
.end start

The second MessageBox seems to be empty, although I was expecting the same result.

04 Jul 2013, 16:15

AsmGuru62

Joined: 28 Jan 2004
Posts: 1660
Location: Toronto, Canada

AsmGuru62 04 Jul 2013, 17:39

I see a square in a message box.
Maybe it depends on a default font Windows uses for message boxes?

04 Jul 2013, 17:39

MHajduk

Joined: 30 Mar 2006
Posts: 6115
Location: Poland

MHajduk 04 Jul 2013, 19:08

yoshimitsu, this code should work for you:

Code:

include 'win32wx.inc'

include 'ENCODING\utf8.inc'
 
.code 
  start: 
        invoke  MessageBox,HWND_DESKTOP,x2,NULL,MB_OK 
        invoke  ExitProcess,0 
.data 
        x2 du '•',0 
.end start

04 Jul 2013, 19:08

yoshimitsu

Joined: 07 Jul 2011
Posts: 96

yoshimitsu 04 Jul 2013, 22:06

MHajduk, thanks but it's still blank for me
I'm using win7 x64 btw.

Description:
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04 Jul 2013, 22:06

AsmGuru62

Joined: 28 Jan 2004
Posts: 1660
Location: Toronto, Canada

AsmGuru62 05 Jul 2013, 01:35

Try like that:

Code:

x2 du 95h,0

05 Jul 2013, 01:35

baldr

Joined: 19 Mar 2008
Posts: 1651

baldr 05 Jul 2013, 06:11

AsmGuru62 wrote:

Try like that:
Code:
x2 du 95h,0    

That won't work because in Unicode BMP code points 0x00…0xFF follow precisely ISO/IEC 8859-1 (Latin-1) standard, where 0x80…0x9F range is allocated for control characters.

----8<----
yoshimitsu,

Bullet glyph corresponds to U+2022 code point. You may either use x2 du 0x2022, 0 or follow MHajduk's suggestion (crucial point is that you need editor with UTF-8 support to get proper source, i.e. • should be encoded as E2 80 A2 sequence; probably author forgot to indicate that).

05 Jul 2013, 06:11

MHajduk

Joined: 30 Mar 2006
Posts: 6115
Location: Poland

MHajduk 05 Jul 2013, 09:03

baldr wrote:

yoshimitsu

(...) follow MHajduk's suggestion (crucial point is that you need editor with UTF-8 support to get proper source, i.e. • should be encoded as E2 80 A2 sequence; probably author forgot to indicate that).

Exactly, I use PSPad that supports UTF-8 encoding of the source but you may use any other more lightweight editor as for example Notepad++.

05 Jul 2013, 09:03

yoshimitsu

Joined: 07 Jul 2011
Posts: 96

yoshimitsu 05 Jul 2013, 10:32

Man, I srsly gotta search for some good Unicode tutorials to finally shed some light..
Thank you guys, I'm now using du 2022h.

PS: How do you actually know the correct code point?

05 Jul 2013, 10:32

bitRAKE

Joined: 21 Jul 2003
Posts: 4060
Location: vpcmpistri

bitRAKE 05 Jul 2013, 10:43

Character Map system tool in windows works - can search for "Bullet" and mouseover to get the code point in tooltip or status bar.

05 Jul 2013, 10:43

Madis731

Joined: 25 Sep 2003
Posts: 2139
Location: Estonia

Madis731 06 Jul 2013, 11:48

I usually query Google for an image-based database. One of them is here:
http://www.fileformat.info/info/unicode/char/2022/index.htm
I has more description than I can handle Smile

06 Jul 2013, 11:48

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