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i have created a project that to Draw the Recatngles and the Ellipses on the window useing the Mouse.but createing the circle i am not geting the any method in the CDC classmembers.So, plz tell me how to create it
ramanand
-- modified at 5:08 Monday 21st August, 2006
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A circle is simply a special case of an elipse. Exactly like a square is a specialisation of a rectangle.
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Ellipse()
Somethings seem HARD to do, until we know how to do them.
 _AnShUmAn_
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hi everyone,
iam working with tree control and i have small problem with it.i want find the index of the item in a tree control.how to find the index.i have gone through the member funtions of the CTreeCtrl class but i couldn't find any method which helps me?
So guys please give me solution for my problem.
with regards
M.Satish Reddy.
sathish
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CTreeCtrl is different from those listboxes or list controls. It doesn't have an index. Instead you get handle to a particular item and using that, you can get its child item and so on.
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To complete Mr Chen's post, you can emulate an indexing of items using the Data member of the items in the TreeCtrl. It is accessible using SetItemData and GetItemData
~RaGE();
I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus
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hi all,
i am using a char *did = "141335678567" in my application and when i am exiting my application will it leads to memory leak ?
Thank you all
venu
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can you show code, how you are using it?
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// m_strUserID is a global variable where i get some value// some userid values
char *charUsrId = m_strUserID.GetBuffer(m_strUserID.GetLength());
char *chDefaultIP = m_strDefaultDomain.GetBuffer(m_strDefaultDomain.GetLength());
i am using like this is it correct ?
venu
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g venu wrote: char *charUsrId = m_strUserID.GetBuffer(m_strUserID.GetLength());
char *chDefaultIP = m_strDefaultDomain.GetBuffer(m_strDefaultDomain.GetLength());
there is no problem using this way,
but make sure you call ReleaseBuffer on CString object, before using it for any other operation.
And ofcourse there is no memory leak.
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prasad_som wrote: but make sure you call ReleaseBuffer on CString object, before using it for any other operation.
And ofcourse there is no memory leak.
If you don't call ReleaseBuffer, you will get a memory leak.
If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week
Zac
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Zac Howland wrote: If you don't call ReleaseBuffer, you will get a memory leak.
I agree, I was in assumption ReleaseBuffer is been used after call to GetBuffer. My statement was assumming that 
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g venu wrote: char *charUsrId = m_strUserID.GetBuffer(m_strUserID.GetLength());
char *chDefaultIP = m_strDefaultDomain.GetBuffer(m_strDefaultDomain.GetLength());
you have to call associated ReleaseBuffer() api of CString Class
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and You
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AFAIK A memory leak occurs when we don't free a block of memory allocated with the new operator.
Somethings seem HARD to do, until we know how to do them.
_AnShUmAn_
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No, not al all if you are actually exiting.
It'll be freed automatically when the program is terminated.
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I want to store current time to a text file. And i want to retrieve that value afterwards and want to compare with the some CTime object. So used CArchieve and failed. Here is my code
<br />
CFile TimeFile;<br />
CTime curTime = CTime::GetCurrentTime();<br />
if(!TimeFile.Open<br />
("TimeFile.txt"<br />
,CFile::modeCreate|CFile::modeNoTruncate|CFile::modeReadWrite))<br />
{<br />
return;<br />
}<br />
CArchive arTimeFile(&TimeFile, CArchive::store,512);<br />
arTimeFile << curTime;<br />
TimeFile.Close();<br />
I am getting debug error and it shows
void CFile::Write(const void* lpBuf, UINT nCount)<br />
{<br />
ASSERT_VALID(this);<br />
ASSERT(m_hFile != (UINT)hFileNull);<br />
--------<br />
please help me.
KIRAN PINJARLA
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insert line arTimeFile.Flush()after writing data to archive.
your code will be like this,
CFile TimeFile;
CTime curTime = CTime::GetCurrentTime();
if(!TimeFile.Open
("TimeFile.txt"
,CFile::modeCreate|CFile::modeNoTruncate|CFile::modeReadWrite))
{
return;
}
CArchive arTimeFile(&TimeFile, CArchive::store,512);
arTimeFile << curTime;
arTimeFile.Flush();
TimeFile.Close();
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Thank you prasad. It did work.
Now I need a little more help. I want to read that CTime object from that file and want to compare with another CTime object. I wrote like this
CArchive arTempFile(&TimeFile, CArchive::load);<br />
CTime tempTime;<br />
arTempFile >> tempTime;
</big>
How to do this.
Thank you
KIRAN PINJARLA
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what error its showing ? you need to use flush() this time,too.
I've tested same code here, its not giving any error.
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Prasad. I got it. It is working. It was my fault.I have given a wrong object name.
Thank you somuch for ur help.
GOOD LUCK.
KIRAN PINJARLA
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hi all,
its very basic question but i don't know how to do this in win32,
how to create a binry file .
can i create it with CreateFile.
please let me know.
Thanks and regards
Harshal
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If you are using only win32 (an no MFC), I would suggest that you use FILE (with fopen, fclose, fread, fwrite, ...). To start with it, you can have a look here[^]
If you are using the MFC, then I would suggest that you use the CFile class.
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i am using MFC i tried with CFile::Open
with binary flag but it is not working
so now i will try fopen only because i am not going to
read the data from the file.
i will write and append to it.
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