C / C++ / MFC

3-Jul-07 20:09

Hi all,
How to find programmatically (C++/MFC) whether entered text is LTR - Left To Right (English) or RTL - Right To Left (Arabic) text.

Thank you

G Haranadh3-Jul-07 20:36

G Haranadh

3-Jul-07 20:36

HI. Is this question is regarding a particular control or edit box / OR / any for string?

Nice talking to you. Blush | :O

If you judge people, you have no time to love them. -- Mother Teresa

Try3-Jul-07 20:54

3-Jul-07 20:54

String

KarstenK3-Jul-07 21:13

KarstenK

3-Jul-07 21:13

This depends on the actual system language better check this with GetLocaleInfo(...)

Greetings from Germany

Try3-Jul-07 22:59

3-Jul-07 22:59

What if Locale is Set to English, and Arabic is selected from Language Bar. GetLocaleInfo() won't help..

Re: Text Direction (Long)

Matthew Faithfull4-Jul-07 4:35

Matthew Faithfull

4-Jul-07 4:35

Each entered character has a UNICODE code point. It is possible to look at the numerical value of that code point and determine what language it is from by what range of numbers it is in. I don't have the windows code to hand as I'm not at work today but you'll probably want to look at The UNICODE consortium[^] for a start to get an idea of what LTR and RTL languages are defined. Part of the information windows will give you on any given character is an RTL flag. This on its own is not enough to determine language though as both Hebrew and Arabic RTL languages are supported on Windows.
I spent most of last year developing a mixed LTR/RTL English/Arabic/Chinese/Japanese/Korean capable edit control for Windows CE and my brain only partially melted Laugh | :laugh:

Nothing is exactly what it seems but everything with seems can be unpicked.

Matthew Faithfull4-Jul-07 23:03

Matthew Faithfull

4-Jul-07 23:03

Below is the table of range beginings for UNICODE character ranges. I'm not sure where we got these from if it wasn't the UNICODE Consortium then it was probably Microsoft.
You'll notice there are 3 ranges for Arabic. One for the stand alone letter forms and 2 for the joined/shaped forms. Your users will usually be typing the stand alone letter forms so you'll want to use the ScriptShape API to turn the string into presentation form before you display it or they will no doubt get upset Sigh | :sigh:

(On XP+ DrawText will do this for you) On the other hand they may copy and paste text that's already in presentation form into your app OMG | :OMG:

It these lovely little things that make Arabic text entry so much fun Big Grin | :-D

#define USR1_BASICLATIN 0x0000000000000001ui64
#define USR1_LATIN1SUPPLEMENT 0x0000000000000002ui64
#define USR1_LATINEXTENDEDA 0x0000000000000004ui64
#define USR1_LATINEXTENDEDB 0x0000000000000008ui64
#define USR1_IPAEXTENSIONS 0x0000000000000010ui64
#define USR1_SPACINGMODIFIERS 0x0000000000000020ui64
#define USR1_COMBININGDIACRITICALMARKS 0x0000000000000040ui64
#define USR1_GREEKCOPTIC 0x0000000000000080ui64
#define USR1_RESERVED1 0x0000000000000100ui64
#define USR1_CYRILLIC 0x0000000000000200ui64
#define USR1_ARMENIAN 0x0000000000000400ui64
#define USR1_BASICHEBREW 0x0000000000000800ui64
#define USR1_RESERVED2 0x0000000000001000ui64
#define USR1_BASICARABIC 0x0000000000002000ui64
#define USR1_RESERVED3 0x0000000000004000ui64
#define USR1_DEVANAGARI 0x0000000000008000ui64
#define USR1_BENGALI 0x0000000000010000ui64
#define USR1_GURMUKHI 0x0000000000020000ui64
#define USR1_GUJARATI 0x0000000000040000ui64
#define USR1_ORIYA 0x0000000000080000ui64
#define USR1_TAMIL 0x0000000000100000ui64
#define USR1_TELUGU 0x0000000000200000ui64
#define USR1_KANNADA 0x0000000000400000ui64
#define USR1_MALAYALAM 0x0000000000800000ui64
#define USR1_THAI 0x0000000001000000ui64
#define USR1_LAO 0x0000000002000000ui64
#define USR1_GEORGIAN 0x0000000004000000ui64
#define USR1_RESERVED4 0x0000000008000000ui64
#define USR1_HANGULJAMO 0x0000000010000000ui64
#define USR1_LATINEXTENDEDADDITIONAL 0x0000000020000000ui64
#define USR1_GREEKEXTENDED 0x0000000040000000ui64
#define USR1_GENERALPUNCTUATION 0x0000000080000000ui64
#define USR1_SUBSCRIPTSSUPERSCRIPTS 0x0000000100000000ui64
#define USR1_CURRENCYSYMBOLS 0x0000000200000000ui64
#define USR1_COMBININGDIACRITICALMARKSFORSYMBOLS 0x0000000400000000ui64
#define USR1_LETTERLIKESYMBOLS 0x0000000800000000ui64
#define USR1_NUMBERFORMS 0x0000001000000000ui64
#define USR1_ARROWS 0x0000002000000000ui64
#define USR1_MATHEMATICAL 0x0000004000000000ui64
#define USR1_MISCTECHNICAL 0x0000008000000000ui64
#define USR1_CONTROLPICTURES 0x0000010000000000ui64
#define USR1_OCR 0x0000020000000000ui64
#define USR1_ENCLOSEDALPHANUMERICS 0x0000040000000000ui64
#define USR1_BOXDRAWING 0x0000080000000000ui64
#define USR1_BLOCKELEMENTS 0x0000100000000000ui64
#define USR1_GEOMETRICSHAPES 0x0000200000000000ui64
#define USR1_MISCSYMBOLS 0x0000400000000000ui64
#define USR1_DINGBATS 0x0000800000000000ui64
#define USR1_CJKSYMBOLSPUNCTUATION 0x0001000000000000ui64
#define USR1_HIRAGANA 0x0002000000000000ui64
#define USR1_KATAKANA 0x0004000000000000ui64
#define USR1_BOPOMOFO 0x0008000000000000ui64
#define USR1_HANGULCOMPATIBILITYJAMO 0x0010000000000000ui64
#define USR1_RESERVED5 0x0020000000000000ui64
#define USR1_ENCLOSEDCJKLETTERSMONTHS 0x0040000000000000ui64
#define USR1_CJKCOMPATIBILITY 0x0080000000000000ui64
#define USR1_HANGUL 0x0100000000000000ui64
#define USR1_SURROGATES 0x0200000000000000ui64
#define USR1_RESERVED6 0x0400000000000000ui64
#define USR1_CJKUNIFIEDIDEOGRAPHS 0x0800000000000000ui64
#define USR1_PRIVATEUSE 0x1000000000000000ui64
#define USR1_CJKCOMPATIBILITYIDEOGRAPHS 0x2000000000000000ui64
#define USR1_ALPHABETICPRESENTATIONFORMS 0x4000000000000000ui64
#define USR1_ARABICPRESENTATIONFORMSA 0x8000000000000000ui64
#define USR2_COMBININGHALFMARKS 0x0000000000000001ui64
#define USR2_CJKCOMPATIBILITYFORMS 0x0000000000000002ui64
#define USR2_SMALLFORMVARIANTS 0x0000000000000004ui64
#define USR2_ARABICPRESENTATIONFORMSB 0x0000000000000008ui64
#define USR2_HALFWIDTHANDFULLWIDTHFORMS 0x0000000000000010ui64
#define USR2_SPECIALS 0x0000000000000020ui64
#define USR2_TIBETAN 0x0000000000000040ui64
#define USR2_SYRIAC 0x0000000000000080ui64
#define USR2_THAANA 0x0000000000000100ui64
#define USR2_SINHALA 0x0000000000000200ui64
#define USR2_MYANMAR 0x0000000000000400ui64
#define USR2_ETHIOPIC 0x0000000000000800ui64
#define USR2_CHEROKEE 0x0000000000001000ui64
#define USR2_CANADIANABORIGINALSYLLABICS 0x0000000000002000ui64
#define USR2_OGHAM 0x0000000000004000ui64
#define USR2_RUNIC 0x0000000000008000ui64
#define USR2_KHMER 0x0000000000010000ui64
#define USR2_MONGOLIAN 0x0000000000020000ui64
#define USR2_BRAILLE 0x0000000000040000ui64
#define USR2_YI 0x0000000000080000ui64
#define USR2_TAGALOG 0x0000000000100000ui64

Nothing is exactly what it seems but everything with seems can be unpicked.

Re: Text Direction (Long)

Try4-Jul-07 23:24

Cross application process Handle

4-Jul-07 23:24

Thanks a lot Matthew..

Interview question

tasumisra3-Jul-07 20:06

tasumisra

3-Jul-07 20:06

Hi all,
I am from c,c++ background... i am working on VC++ from last few month.. i want to know about the interview question that can be asked... can anybody guide me... Smile | :)

Thankns in advance...

Tasu

Re: Interview question

G Haranadh3-Jul-07 20:27

G Haranadh

3-Jul-07 20:27

you want interview questions?
Just i am posting a link for asp.net but it not contails only asp dot net. it contains all interview questions.
Many interview questions

Nice talking to you. Blush | :O

If you judge people, you have no time to love them. -- Mother Teresa

Re: Interview question

tasumisra3-Jul-07 21:25

tasumisra

3-Jul-07 21:25

Thanks Haranadh ....
definitly it will help me

Tasu

SNI3-Jul-07 20:05

3-Jul-07 20:05

Hi,
I am trying to run two process (Process A & Process B) in User credentials. Process A is running with Admin credentials (Process A runs with CreateProcessWithLogon API) and Process B running with User credentails. I am trying to get the handle of Process B in Process A but it is returning NULL handle.

I would like to know how can I get the process handle of Process B, which is running under User credentials using Process A, which is running with Admin credentials.

Any idea / view on this would help.

Thanks
Suhas

SNI

Stephen Hewitt3-Jul-07 20:11

3-Jul-07 20:11

More information would be nice. Try the OpenProcess API perhaps.

Steve

SNI3-Jul-07 20:18

3-Jul-07 20:18

Steve,
I am using Openprocess to get the handle of Process B in Process A. I get the handle to the window of process B and find out the Process ID (which is I am receiving correct), but when I tried to get the handle using OpenProcess it is returning NULL. The reason behind this could be Process A runs with Admin credentails and Process B running with User creadentails.
I need to find out the way how to get the process handle for Process B.

Thanks

SNI

SNI

Stephen Hewitt3-Jul-07 20:21

3-Jul-07 20:21

Perhaps if you post some code the problem may be noticed by someone.

Steve

SNI3-Jul-07 20:29

3-Jul-07 20:29

Here is the code where I am trying to get the handle of process B is Process A
--------------------------------------------------------------------------------
HWND hwnd = ::FindWindow(NULL,"Process B");
DWORD dwThreadId, dwProcessId;
dwThreadId = GetWindowThreadProcessId(hwnd, &dwProcessId);

HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS |PROCESS_QUERY_INFORMATION | PROCESS_VM_READ,FALSE,dwProcessId );

Here hProcess becomes NULL.

Thanks

SNI

Stephen Hewitt3-Jul-07 20:35

3-Jul-07 20:35

Try putting a breakpoint after the OpenProcess call and then enter the following in the watch window of your debugger:

@ERR,hr

What problem does the debugger report when the breakpoint is hit?

Steve

SNI3-Jul-07 20:44

3-Jul-07 20:44

I Ran Process B in User credentials and after hitting berak point @ERR,hr valus is S_OK.

jhghjghj

Stephen Hewitt3-Jul-07 20:48

3-Jul-07 20:48

Interesting. Perhaps try this:

HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS, dwProcessId);

If this doesn't work then I'm not sure what to suggest.

Steve

SNI3-Jul-07 21:10

3-Jul-07 21:10

Steve,
Thanks for your reply. But it is not working. I'll explain you once again how I am running these processes. I have write a program where I am executing Process B using shellexecute with out any credentials and Process A with CreateProcessWithLogon API with admin credentials. Now when both processes are running Process A tries to get handle to the Process B and it fails.
The code given above will work only when I am running these two processes indiviually. but not thru any program as I explained.
If you any idea how can one get the handle to the process B when running thru third program / utility.

Thanks

SNI

Re: Cross application process Handle [modified]

Naveen3-Jul-07 21:10

Naveen

3-Jul-07 21:10

I too had problem in opening the process created by another user.I can even open system process but not process created by another user. That problem not solved yet.

nave

[OpenedFileFinder]

SNI3-Jul-07 23:46