C / C++ / MFC

8-Mar-07 1:51

Are you sure it is a "mix of ASCII and UCS-2"? That would be very strange. It may be a multibyte encoding, like SHIFT_JIS.

Re: Mixed UCS-2 and 1-byte ASCII characters

jones1668-Mar-07 2:10

jones166

8-Mar-07 2:10

No, I'm not really sure about anything.

It just seems like that for me. That hex code I pasted is something like ".sph *some japanese*" as clear text.

Re: Mixed UCS-2 and 1-byte ASCII characters

Nemanja Trifunovic8-Mar-07 2:36

8-Mar-07 2:36

To find out if the Japanese characters are really encoded as UCS-2, check that the first two Japanese bytes form a symbol that you actually see on the screen. In your case it would be U+95e7, and this is the correspondingUnicode character[^]. Is that what you see?

On the other hand, if it is Shift_JIS, 0x95e7 would correspond[^] to Unicode 0x6155[^] - is that what you see on the screen? If it turns out to be SHIFT_JIS, just use MultiByteToWideChar to convert it to UTF-16.

How to check extended style of List View?

Aryan S8-Mar-07 1:39

Aryan S

8-Mar-07 1:39

I want to check whether LVS_EX_CHECKBOXES is set as the extended style of a list view. How to check that?

Re: How to check extended style of List View?

vibindia8-Mar-07 2:05

vibindia

8-Mar-07 2:05

Let the m_list be the object of the list control.
You get the Extended style of the list control and check it as in the If statement....

m_list.SetExtendedStyle(m_list.GetExtendedStyle() | LVS_EX_CHECKBOXES );
if(m_list.GetExtendedStyle() & LVS_EX_CHECKBOXES)
{
AfxMessageBox("LVS_EX_CHECKBOXES Set");
}
else
{
AfxMessageBox("LVS_EX_CHECKBOXES Not Set");
}

Big Grin | :-D

VIBIN

"Fool's run away,where angle's fear to tread"

Getting the IE cache entry of the image displayed in the IE

Suyash8-Mar-07 1:05

Suyash

8-Mar-07 1:05

Hello All,

I have an MFC application. In my application I create an instance of IE, and browse to some link, say "www.Adserver.com".
After hitting to this link, I always receive an image from the "www.Adserver.com", I will get different image everytime I hit this URL.
I need to display this image on one of my dialog in my application, hence I need the handle to URLCacheEntry maintained by window for IE.
To get this handle I can use the function GetUrlCacheEntryInfo( IN LPCSTR lpszUrlName,...); however the input parameter to this function "IN LPCSTR lpszUrlName" is something I need to extract from the running instance of IE, which is displaying this image.

We can assume that always there will be a single image displayed in IE.

Thanks in advance for your replies.

Suyash

garbage value problem????

amitmistry_petlad 8-Mar-07 0:39

amitmistry_petlad

8-Mar-07 0:39

when source pass with null value the len will be 0.
but due to effect of that tempOutFile create the garbage value I need to clear it with null value.

<code>
string Utility::ConvertWCHARToString(LPCWSTR source) //source=""
{
	try
	{
		size_t len = wcslen(source) * sizeof(LPCWSTR);	//len=0	 
		char* tempOutFile= new char[len];//tempOutFile=Garbage valve need tempOutFile =""		 </code>   
		WideCharToMultiByte(CP_ACP,0,source,-1,tempOutFile,(int)len,NULL,NULL);
		string s = tempOutFile;
		if(tempOutFile)
		{
			delete[] tempOutFile;
		}
		return s;
	}
	catch(exception ex)
	{
		throw ex;
	}
}

I have try to intialize the value explicitly but it didn't work(crash application).
like

if(len==0)
tempOutFile=NULL;

prasad_som8-Mar-07 0:46

8-Mar-07 0:46

amitmistry_petlad wrote:
char* tempOutFile= new char[len];//tempOutFile=Garbage valve need tempOutFile =""

Modify this to,

char* tempOutFile = NULL;
if (len)
{
 tempOutFile = new char[len];//
}

Prasad
Notifier using ATL | Operator new[],delete[][^]

amitmistry_petlad 8-Mar-07 0:54

amitmistry_petlad

8-Mar-07 0:54

This is for my master Rose | [Rose]

I did it but it gives bad pointer and application crashed!!! Sleepy | :zzz:

prasad_som8-Mar-07 1:29

8-Mar-07 1:29

You are not supposed to use code following , if len in question is 0.

Prasad
Notifier using ATL | Operator new[],delete[][^]

amitmistry_petlad 8-Mar-07 2:39

amitmistry_petlad

8-Mar-07 2:39

yes ,i have do it. I had compare when got NULL then return s="".

prasad_som8-Mar-07 2:51

8-Mar-07 2:51

Then, its definitely due to code, you have not shown here. Can you explain, how you are using this function, and where you are facing problem.

Prasad
Notifier using ATL | Operator new[],delete[][^]

krmed8-Mar-07 2:58

krmed

8-Mar-07 2:58

I think you also have a problem here:

size_t len = wcslen(source) * sizeof(LPCWSTR);	//len=0

wcslen(source) should give you the length you need - but then you are multiplying it by sizeof(LPCWSTR) which is 4 bytes since it's a pointer. That really isn't necessary.

You should then be able to wrap the rest in an if:

if (len > 0)
{
    char* tempOutFile= new char[len];//tempOutFile=Garbage valve need tempOutFile =""
    WideCharToMultiByte(CP_ACP,0,source,-1,tempOutFile,(int)len,NULL,NULL);
    string s = tempOutFile;
    if(tempOutFile)
    {
        delete[] tempOutFile;
    }
    return s;
}

Hope that helps.

Karl - WK5M
PP-ASEL-IA (N43CS)
PGP Key: 0xDB02E193
PGP Key Fingerprint: 8F06 5A2E 2735 892B 821C 871A 0411 94EA DB02 E193

memcpy related

NiceNaidu8-Mar-07 0:37

NiceNaidu

8-Mar-07 0:37

Hi friends,
What is the Max limit of the number of bytes copied from Source to Destination in mempcy ??

Thanks in advance.

Appu..
"My blood group is not B+.But I have it my blood"

Vinod Sankaranarayanan8-Mar-07 1:30

Vinod Sankaranarayanan

8-Mar-07 1:30

Hi,

The maximum limit is mostly compiler dependent.

It will be the maimum size of "size_t" .

i.e : "size_t" is an alias of "unsigned long" , so the maximum size of "unsigned long" is ULONG_MAX

Note : ULONG_MAX is 4294967295

Regards,

vinsankar

toxcct8-Mar-07 1:40

toxcct

8-Mar-07 1:40

Vinod A Sankaranarayanan wrote:
It will be the maimum size of "size_t" .

that's right

Vinod A Sankaranarayanan wrote:
i.e : "size_t" is an alias of "unsigned long"

wrong here. unsigned long is always 4 bytes, even on 64 bits systems; size_t is 8 bytes on 64 bits systems

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Nemanja Trifunovic8-Mar-07 2:00

8-Mar-07 2:00

toxcct wrote:
unsigned long is always 4 bytes, even on 64 bits systems;

Actually, unsigned long is 8 bytes on most 64-bit Unix systems; the Standard does not specify the size of unsigned long

toxcct8-Mar-07 2:12

toxcct

8-Mar-07 2:12

Nemanja Trifunovic wrote:
the Standard does not specify the size of unsigned long

doesn't it ?

AFAIK, only [signed | unsigned] ints weren't specified...

short and long still length to 2 and 4 bytes respectively

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Nemanja Trifunovic8-Mar-07 2:58

8-Mar-07 2:58

toxcct wrote:
doesn't it ?

Nope[^], it pretty much guarantees only minimal sizes for integer types. As I said, on most 64-bit Unix systems, long is 64 bits.

PJ Arends8-Mar-07 5:00

PJ Arends

8-Mar-07 5:00

I always thought it was that way too Confused | :confused:

Either I was always wrong or the C standard has been changed since I first learned this.

You may be right
I may be crazy
-- Billy Joel --

Within you lies the power for good, use it!!!

toxcct8-Mar-07 5:45

toxcct

8-Mar-07 5:45

the game seems to be over for us... let's go back to school ! lol

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prasad_som8-Mar-07 1:34

8-Mar-07 1:34

Maximum size_t can hold.

Prasad
Notifier using ATL | Operator new[],delete[][^]