Re: CString Mid() - C / C++ / MFC Discussion Boards

Rajesh R Subramanian20-Mar-06 21:04

20-Mar-06 21:04

Hi there,

*Unicode file* means? An app that is aware of unicode? For that, you need to add the following to your stdafx.h

#define _UNICODE
#define UNICODE

Regards,
Rajesh R. Subramanian

You have an apple and me too. We exchange those and We have an apple each.
You have an idea and me too. We exchange those and We have two ideas each.

Re: UNICODE Files

Johann Gerell20-Mar-06 21:10

Johann Gerell

20-Mar-06 21:10

Create the file with ::CreateFile, write the unicode text to the file with ::WriteFile and close it up with ::CloseHandle. Exactly the same as with ANSI characters, with the exception of wider characters, so that if you have

std::wstring text(L"Unicode text");

then write the data stream

text.data()

which has the byte size

text.size() * sizeof(wchar_t)

Was that what you meant?

Of course, there are abstractions that makes it easier to work with the Win32 file APIs. But grok the above and be a happier man. Roll eyes | :rolleyes:

--
The Blog: Bits and Pieces

Re: UNICODE Files

bosfan21-Mar-06 2:47

bosfan

21-Mar-06 2:47

Hello,
thax for answers, i try to make it!

regards
break;

How to access the child windows in MDI application?

Sarvan AL20-Mar-06 20:34

Sarvan AL

20-Mar-06 20:34

Hi all,

I have an MDI application with multiple views (CScrollView, CFormView). Lets say there are five views opened (CScrollView -3, CFormView -2). There is a member "Child_Id" in the CScrollView class.

At one point of time - in the application class, I'd like to update (repaint) a CScrollView object with a given "Child_Id".

Give your hands please...

Thanks in advance,
Sarvan AL

Re: How to access the child windows in MDI application?

Nibu babu thomas21-Mar-06 0:06

Nibu babu thomas

21-Mar-06 0:06

You can take a look at the following functions...

CDocument::GetFirstViewPosition();
CDocument::GetNextView();
CMultiDocTemplate::GetFirstDocPosition();
CMultiDocTemplate::GetNextDoc();

Nibu thomas
Software Developer

CString Mid()

RadioOpa20-Mar-06 20:30

RadioOpa

20-Mar-06 20:30

I have a CString object loaded with a string like "This is the first section$This is the second section$This is the end" so each section separated by '$'. I try to load the second section as csAnsprech = csComboBoxText.Mid( csComboBoxText.Find( '$') +1, csComboBoxText.ReverseFind( '$')); but this retrieves the second and third section, nut just the second one. What´s wrong here ?

Re: CString Mid()

Naveen20-Mar-06 20:42

Naveen

20-Mar-06 20:42

int nPos = csComboBoxText.Find( '$') + 1;
csAnsprech = csComboBoxText.Mid( nPos , csComboBoxText.GetLength()- csComboBoxText.Find( '$',nPos ));

nave

Re: CString Mid()

bosfan20-Mar-06 20:50

bosfan

20-Mar-06 20:50

Hello RadioOpa,

try this:

<br />
int i =0;<br />
while(i < csComboBoxText.GetLength())<br />
{<br />
	if(csComboBoxText.GetAt(i) == '$') // if we found the first separator in the string<br />
	{<br />
	i++; // move one place to skip the separator<br />
	while(csComboBoxText.GetAt(i) != '$') // now copy all characters in your string, while not found the next separator<br />
	{<br />
		csAnsprech += csComboBoxText.GetAt(i);<br />
		i++; // move to the next character<br />
	}<br />
	}<br />
	i++;// move to the next character<br />
}<br />

i hope that helps you!
regards
break;
P.S. that sample from nave ist very good, i want just to show you another way without Find-Functions to extract a part of string
-- modified at 2:55 Tuesday 21st March, 2006

Re: CString Mid()

RadioOpa20-Mar-06 21:14

RadioOpa

20-Mar-06 21:14

Many thanks, both ways solving the problem are excellent.

I changed code as follows:

iFirstSection = csComboBoxText.Find( '$'); // Find first '$'
iSecondSection = csComboBoxText.Find( '$', iFirstSection +1); // Find second '$'

csFirma = csComboBoxText.Mid( 0, iFirstSection); // Get first string section
csFirma.TrimRight( ' ');
csOrt = csComboBoxText.Mid( iFirstSection +1, iSecondSection - iFirstSection); // Get second
csOrt.TrimRight( ' ');
csFirmaID = csComboBoxText.Mid( iSecondSection +1); // Get last section

Re: CString Mid()

Michael Dunn21-Mar-06 6:59

Michael Dunn

21-Mar-06 6:59

The second param to Mid() is the # of characters, not the ending index. You can use AfxExtractSubString() to pick out the tokens.

--Mike--
Visual C++ MVP Cool | :cool:

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char array to CString ??

dharani20-Mar-06 20:16

dharani

20-Mar-06 20:16

Hi all
I have a char array
char codenew[12];
codenew[0]='\0';

How to convert it into a CString ?
Any help plz ?

redindian

Re: char array to CString ??

Cedric Moonen20-Mar-06 20:20

Cedric Moonen

20-Mar-06 20:20

char codenew[12];
strcpy(codenew,"Blah");
CString TempString = codenew;

Re: char array to CString ??

dharani20-Mar-06 21:37

dharani

20-Mar-06 21:37

hi
Thanks
Now i am facing another problem
char autocode[12];
stycpy(autocode,"1234");
CString csBuffer ="1234";
if(strcmp(autocode,(char*)(csBuffer.GetBuffer(csBuffer.GetLength()))))
{

csBuffer.ReleaseBuffer();
return TRUE;
}

Now , at csBuffer.ReleaseBuffer() ..it crashes ..
I dont understand why ...
I feel strcmp still holds the memory returned by csBuffer.GetBuffer right ?
can u help me solve it ?

redindian

Re: char array to CString ??

kakan20-Mar-06 23:12

kakan

20-Mar-06 23:12

Why don't you just do this?

char autocode[12];
strcpy(autocode,"1234");
CString csBuffer ="1234";

if(strcmp(autocode,(LPCTSTR)csBuffer)) return TRUE;

A CString is freed when it goes out of scope so you (normally) don't have to.

OT:
Why should it return TRUE for a difference between autocode and csBuffer?

Re: char array to CString ??

James R. Twine21-Mar-06 6:59

James R. Twine

21-Mar-06 6:59

dharani wrote:
char autocode[12];
stycpy(autocode,"1234");
CString csBuffer ="1234";
if(strcmp(autocode,(char*)(csBuffer.GetBuffer(csBuffer.GetLength()))))
{

csBuffer.ReleaseBuffer();
return TRUE;
}

You are going a long, long way just to compare strings. Note that you are not doing anything specific to CStrings, so it is a waste to use one. But since you have one, use its Compare(...) method:

CString csBuffer = _T( "1234" );
//
//
//
if( !csBuffer.Compare( _T( "1234" ) ) )
{
    // csBuffer == "1234"
}
else
{
    // csBuffer != "1234"
}

Peace!

-=- James

If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Avoid driving a vehicle taller than you and remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
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Re: char array to CString ??

Divyang Mithaiwala21-Mar-06 3:36

Divyang Mithaiwala

21-Mar-06 3:36

Have you tried this

char c[10] = "My Array";
CString str;

str.Format("%s",c);

Divyang Mithaiwala
System Engineer & Software Developer

Re: char array to CString ??

toxcct21-Mar-06 4:10

toxcct

21-Mar-06 4:10

as Cedric explained with a code sample, the CString class provides an operator = (const TCHAR*) which allows you to assign directly a CString with a char*...

char* codenew = "hello";
CString str = codenew;

Is it possible to display Application's GUI/Console Window which activated by CreateProcess in Windows Service?

yuguo.li20-Mar-06 19:51

yuguo.li

20-Mar-06 19:51

My code is followed, it's good to run in a general WinApp,but in a windows service,it doesn't work. Does anybody give me a hand?

void CLoadDlg::StartUpFederate(CString federatePath,CString sCommandLine)
{
char cCommandLine[MAX_PATH];
PROCESS_INFORMATION pi;

STARTUPINFO si;
memset(&si,0,sizeof(STARTUPINFO));
si.cb = sizeof(STARTUPINFO);

si.dwFlags |= STARTF_USESHOWWINDOW;
si.wShowWindow = SW_SHOW;

char CurrentDir[MAX_PATH];
//GetCurrentDirectory
GetCurrentDirectory(MAX_PATH,CurrentDir);
//SetCurrentDirectory
SetCurrentDirectory(federatePath);
::strcpy(cCommandLine, sCommandLine);

SECURITY_ATTRIBUTES sa;
SECURITY_DESCRIPTOR sd;
InitializeSecurityDescriptor(&sd,SECURITY_DESCRIPTOR_REVISION);
SetSecurityDescriptorDacl(&sd,TRUE,NULL,FALSE);
sa.nLength = sizeof(SECURITY_ATTRIBUTES);
sa.bInheritHandle = FALSE;//TRUE;
sa.lpSecurityDescriptor = &sd;

BOOL ret = CreateProcess(NULL, // pointer to name of executable module
cCommandLine, // pointer to command line string
NULL, //&sa,//// process security attributes
NULL,//&sa,// // primary thread security attributes
FALSE,//TRUE, //FALSE,// handle inheritance flag
0, //CREATE_NEW_CONSOLE// creation flags //HIGH_PRIORITY_CLASS
NULL, // pointer to new environment block
NULL, // pointer to current directory name
&si, // pointer to STARTUPINFO
&pi); // pointer to PROCESS_INFORMATION
//SetCurrentDirectory
SetCurrentDirectory(CurrentDir);
}

Help,How to bind a web protocol?

Jiang Miao20-Mar-06 19:48

Jiang Miao

20-Mar-06 19:48

There is many url protocols such as "rtsp" "mms" "http" "ftp" "svn" and so on.
Now, I want to establish my own protocol. For example:"mypro"
How to do it?

Thanks.

Re: Help,How to bind a web protocol?

Jiang Miao20-Mar-06 20:18

Jiang Miao

20-Mar-06 20:18

Luckily, I found the answer at "Registering an Application to a URL Protocol" of MSDN.

creating a bitmap // filling colors in "BITMAP"

himuskanhere20-Mar-06 19:07

himuskanhere

20-Mar-06 19:07

hello frds ,
i stuck at the point of filling pixels in bitmap file....
Problem:
i have to genarate a .bmp file thas why i write a BITMAPFILEHEADER and BITMAPINFOHEADER structure in file.
now i face difficult to fill colors in that file.
i am not getting what is palatte and rgb quad.
I directly put the value of rgbquad in file like

fwrite(&rquad,sizeof(rquad),1,image);

it doent work!!!
reply
thanks in advance !! OMG | :OMG:

Rahul here

Re: creating a bitmap // filling colors in "BITMAP"

Hamid_RT20-Mar-06 19:54

Hamid_RT

20-Mar-06 19:54

Hi rahul.shendurnikar,
Do you want to create bitmap and draw color on the bitmap

filling colors in "BITMAP"

himuskanhere20-Mar-06 19:05

himuskanhere

20-Mar-06 19:05

Rahul here

__RPC_FAR

HakunaMatada20-Mar-06 18:46

HakunaMatada

20-Mar-06 18:46

What does __RPC_FAR do?

typedef /* [unique] */ IDispatch __RPC_FAR *LPDISPATCH;
What does this signify?

Thanks for helping! Smile | :)

---
With best regards,
A Manchester United Fan

The Genius of a true fool is that he can mess up a foolproof plan!

Re: __RPC_FAR

Nibu babu thomas20-Mar-06 19:22

Nibu babu thomas

20-Mar-06 19:22

Save My Soul - (SMS) wrote:
What does __RPC_FAR do?

typedef /* [unique] */ IDispatch __RPC_FAR *LPDISPATCH;
What does this signify?

16 bit environments used to have near and far pointers, and __RPC_FAR used to indicate a far pointer. It is provided for compatibility reasons, it is defined as nothing.

Nibu thomas
Software Developer

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