Save As Dialog not saving correctly

The code below opens the dialog fine and saves fine with the GetFileName function. However, the already existing file (fprint.txt) that I want the Save As dialog to focus on is not being used. A new file is being created instead with out the contents of the existing file. Thanks for the info. Looking forward to a solution.

Code:

CString strfileName;
FILE* stream;
stream = fopen( "fprintf.txt", "a+");
	CFileDialog saveFile( FALSE, ".txt", NULL, OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,
						"Text file (*.txt)|*.txt|" , NULL );
	saveFile.m_ofn.lpstrTitle = "Save file as...";
	
	if(IDOK == saveFile.DoModal())	{		
		strfileName = saveFile.GetFileName();
		fprintf(stream, strfileName);
}

James

Where's the fopen( )?

Originally posted by XSquared
Where's the fopen( )?

stream = fopen( "fprintf.txt", "a+");

Is this not correct maybe?

My last few recent post have been aound this subject specifically, I am unable to located good MFC tutorials. Thanks for the patience.

Sorry 'bout that. I'm a bit blind today.

No solution yet.

Why are you using fopen() and fprintf() in a MFC (or C++) program?

MFC has its own File class, CFile.


You seem to want fprintf() to copy one file to another.
It does not do this.


to debug your app;

What value does

fprintf(stream, strfileName);

return? (should be the bytes written to the file which will be zero as you are using it incorrectly)


what does

strfileName

contain at this point?

>>Why are you using fopen() and fprintf() in a MFC (or C++) >>program?

I began to learn the functions of the MFC CFile classes after I applied this. I plan on revamping it all once I get the familiarities of MFC down.

>>You seem to want fprintf() to copy one file to another.
>>It does not do this.

Exactly, only using the CFile.Dialog to simplify the process for the user.


>>to debug your app; What value does fprintf(stream,>>strfileName); return? (should be the bytes written to >>the file which will be zero as you are using it incorrectly)

0 is correct. so aggravating


>>what does strfileName contain at this point?

Not sure what you mean, 'strfileName' contains the information gathered by the user during the GetFileName function.

Thank you much for your reply.

>>fprintf(stream, strfileName);

What do you think this line does? What is this line purpose?



>>0 is correct. so aggravating

NO

zero means it failed to copy anything to 'stream'. Look up the return value of fprintf() in the help.

Why are you not testing that the file was opened?

FILE* stream=NULL;
stream = fopen( "fprintf.txt", "a+");
if(stream==NULL)
iError=GetLastError(); //find out why and handle fail


fprintf(stream,"%s",sText); //this will print the contents of a string to an open file.

Look for help on format specifiers (format control string) for the printf functions.

>>what does strfileName contain at this point?

Does it contain the correct file name and path? Use the debugger (and a break point) to look at its contents during run time.

You can used the debugger can't you? If not learn NOW.

>>fopen()
Superceded by CreateFile() and CFile class

To answer the majority of your questions

Originally posted by jkw2068
I plan on revamping it all once I get the familiarities of MFC down.

What I would like to see is a working model example of this function. It doesn't need to be based of off my code.


Appreciate the direction Novacain.

Solved. I will try to post the outcome shortly. Thanks for the help. FINE.

James