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Paresh Chitte wrote: Pixel comparision would be helpful.
Uh, clever boy! And how the hell you were able to find out the above? 
Only kidding...
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
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Hi CPallini,
Please correct me if I am wrong..
Regards,
Paresh.
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Oh, no, you're right.
But I think the OP was himself able to figure out that.
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
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CPallini wrote: But I think the OP was himself able to figure out that.
You'd like to assume that folks could get that far on their own, but with the quality of questions that get asked here, it's hard to give them the benefit of the doubt.
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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DavidCrow wrote: You'd like to assume that folks could get that far
FAR? Pixels? How far are pixels from us?
Without good opponents what about the athletes?
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
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I think that we can't talk about a single strategy..probally it depends on what type of image and differences you are working.
First usually differnt images of the same subject must be scaled (or rotated) or moved to create a perfect sincronization...To find out how move the picture you will need a 2D cross correlation, and to find out the scaling (or rotating) factor you can use the 2D Fourier transform (probally normalizing the coefficiens by the first one).
After this you have to compare the images. Here starts different strategyes according to the images type. I want only to rememeber to you that it is possible to compare two images not only in the RGB domain, but also in the HSV domain (I think that there are some other, but I don't know the differences). The HSV I think is more useful to detect small color differences.
Thake a look on the web on that arguments, and good luck.;)
Russell
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I want to know if a specific HWND object is in the taskbar button list, how to do that?
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Have you looked at CWnd::GetNextDlgTabItem API?
Yours Truly, The One and Only!
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Is this used for taskbar button? or do you mean to transfer the TaskBar window handle to this function and get it's items? If it is so, how to find the corresponding application window handle?
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all the controls as well as the controlbar are basically windows. so if you have a handle to the taskbar you should be able to use this api to enumerate the child controls.
Yours Truly, The One and Only!
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Here's the scenario. I have a tree control and a list control on a dialog. I added a ON_NOTIFY_REFLECT(NM_DBLCLK, xxx) handler for the list control to handle the double click event. Then I realized I need to inform the parent dialog the double click notification message as well, so that the parent dialog can synchronize some information to the tree control on the left side. But the thing is I can't use ON_NOTIFY(NM_DBLCLK, xxx) in the message map of the owner dialog because the notification is handled locally in the list control. Is there a way to let both the control and its owner receive the same notification or I have to redirect the notification to the parent window after the event is handled locally (SendMessage or something?)
Thanks guys.
Toe the line
Thread the needle
Think outside of the box
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One way to redirect the notification message is:
In the list control: message map ON_NOTIFY_REFLECT(NM_DBLCLK, OnDoubleClicked)
In the function
void CListCtrl::OnDoubleClicked(...)
{
...// code for handling the double click in list control
Get the dialog window's handler->SendNotifyMessage(MESSAGE_CODE, wParam, lParam);
}
Add a ON_MESSAGE(MESSAGE_CODE, OnRecvLVDoubleClicked) in the dialog's message map
and finally add the OnRecvLVDoubleClicked function.
Pretty ugly. Isn't there a way to let the control and its owner both receive the same notification?
Toe the line
Thread the needle
Think outside of the box
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_Pinux_ wrote: Pretty ugly. Isn't there a way to let the control and its owner both receive the same notification?
No 
Mark
Mark Salsbery
Microsoft MVP - Visual C++
![Java | [Coffee]](https://www.codeproject.com/script/Forums/Images/coffee.gif)
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I see. Thanks.
Toe the line
Thread the needle
Think outside of the box
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Hello Guru Jiiiiiiiiii's
I am making a application in VC++(MFC-Modal Dialog based).And i don't know
file handling ........The question i am writing here i have already post here
but I am sending my code also. my question is below . Plz help me
Actually I am making a file field ( Mense when user click browse button
all HD display and he/she can attach his .txt document ) That .txt doc
will be save at a file which is created in C:Drive in a folder ( it can any other place also )
I have done its Most of work like i can read file create new file also
but i am unable to write that data in to newly created file.
I don't know where i am making wrong . I know its vewry basic . But i am also know i am also very begginner in file handling
My whole code That i have write for this is below
CString str;
int ids;
CFileDialog Obj(TRUE);
if(Obj.DoModal() ==IDC_BUTTON3)
{
m_Upload = Obj.GetFileName();
}
str.Empty();
str = Obj.GetPathName();
SetDlgItemText(IDC_EDIT1,str); //write file path with name at edit box
CString strLine = "";
CString buffer = "";
CStdioFile fileObj,filewrite;
CString fname;
fileObj.Open(str, CFile::modeRead | CFile::shareDenyWrite);
fname = fileObj.GetFileName();
while(fileObj.ReadString(strLine))
{
fileObj.ReadString(strLine);
buffer += strLine + "\r\n";
}
fileObj.Close();
// MessageBox(buffer);
SetDlgItemText(IDC_EDIT3,buffer);////write all data at another edit box
fileObj.Open("c:\\UserFolder\\" + fname + ".txt",CFile::modeCreate,NULL);
CString dataStr;
GetDlgItemText(IDC_EDIT3,dataStr);
CStdioFile myFile;
CFileException e;
CString strFileName =str;
if(! myFile.Open( strFileName, CStdioFile::modeCreate | CStdioFile::modeWrite
| CStdioFile::modeNoTruncate, &e ) )
{
CString failCause = "Unable to open file. Reason : ";
switch (e.m_cause) {
case CFileException::none:
failCause += "No error occurred.";
break;
case CFileException::generic:
failCause += "An unspecified error occurred.";
break;
case CFileException::fileNotFound:
failCause += "The file could not be located.";
break;
case CFileException::badPath:
failCause += "All or part of the path is invalid.";
break;
case CFileException::tooManyOpenFiles:
failCause += "The permitted number of open files was exceeded.";
break;
case CFileException::accessDenied:
failCause += "The file could not be accessed.";
break;
case CFileException::invalidFile:
failCause += "There was an attempt to use an invalid file handle.";
break;
case CFileException::removeCurrentDir:
failCause += "The current working directory cannot be removed.";
break;
case CFileException::directoryFull:
failCause += "There are no more directory entries.";
break;
case CFileException::badSeek:
failCause += "There was an error trying to set the file pointer.";
break;
case CFileException::hardIO:
failCause += "There was a hardware error.";
break;
case CFileException::sharingViolation:
failCause += "SHARE.EXE was not loaded, or a shared region was locked.";
break;
case CFileException::lockViolation:
failCause += "There was an attempt to lock a region that was already locked.";
break;
case CFileException::diskFull:
failCause += "The disk is full.";
break;
case CFileException::endOfFile:
failCause += "The end of file was reached.";
break;
default:
failCause += "Unknown cause.";
break;
}
AfxMessageBox(failCause);
}
else
{
myFile.SeekToEnd();
CString strLine = dataStr;
strLine += "\r\n";
myFile.WriteString(strLine);
// myFile.WriteString(dataStr);
myFile.Close();
}
I write that all code with the help of net also its work almost fine But
The main task i.e write all data at file in userfolder is not perform
Please told me where i am wrong
Regard's
Kaushik
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Can you explain about this line "if(Obj.DoModal() ==IDC_BUTTON3)".
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Christian Graus - Microsoft MVP - C++
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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It mense When particular button which id is (IDC_BUTTON3) clicked
Then event fire and Browse the window for selecting your file
Regard's
Kaushik
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Have you got any error message? If the answer is Yes then, please, post it.
BTW, the debugger is your best frined.
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
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I don't have any error message
But data is not write at file
Regard's
Kaushik
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myFile and fileObj are use mixed, I think you neednt myFile. Really 
Greetings from Germany
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Your code has some problem
(1)
if(Obj.DoModal() ==IDC_BUTTON3)
to
if(Obj.DoModal() ==IDOK)
(2)
while(fileObj.ReadString(strLine))
{
fileObj.ReadString(strLine);
buffer += strLine + "\r\n";
}
to
while(fileObj.ReadString(strLine))
{
buffer += strLine + "\r\n";
}
fileObj.ReadString(strLine);
(3)
Do you have this folder on your system
fileObj.Open("d:\\UserFolder\\" + fname + ".txt",CFile::modeCreate,NULL);
(4)
if(! myFile.Open( strFileName
, CStdioFile::modeCreate | CStdioFile::modeWrite
| CStdioFile::modeNoTruncate, &e ) )
and also you have an if/else block
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