fstream >> CString error

[classic773]

I'm getting a "error C2678: binary '>>' : no operator defined which takes a left-hand operand of type 'class fstream' (or there is no acceptable conversion)"
from:
fstream pref_file;
CString something;
pref_file.open("prefs", ios::in|ios::nocreate);
if(pref_file.is_open())
{
pref_file >> something;
}

Why? I read in MSDN that CString includes >>

 

[classic773]

hmm, on further inspection it says >> is overloaded for CArchive, which means they were to lazy to overload it for streams. So I guess I have to >> LPSTR then convert the LPSTR to a CString

 

[classic773]

so how do i convert a LPSTR to a CString?

 

[classic773]

shoot nevermind
i had LPSTR = CString, rather than the other way around
Gosh its only 11 and i'm already frustrated

 

[classic773]

I found that the best(only) way to read from a file into a CString is using CStdio

 

[IonelBurtan]

Convert LPSTR to to CString is easy
myCString=CString(myLPSTR);

Yes CStdio has the ReadLine and WriteLine useful for text files, for the other files(binary, for example an image) more fit are CFile, CMemFile. s-)

Blessed is he who in the name of justice and good will, shepards the week through the valley of darkness...

http://www20.brinkster.com/ionelb

 

[Cagliostro]

I cant understand, why are you using CStrings with fstreams? If you are using MFC already, use CFile. John Fill

ivfmd@mail.md

 

[classic773]

Ummm, the reason is that I had unix c++ code that I'm making a visual c++ program out of : ) I'm new to visual c++ so I don't know all the new mumbo jumbo

 

[Cagliostro]

In this case, ask it in Unix C++ forum John Fill

ivfmd@mail.md

 

[classic773]

I should ask visual c++ questions in a Unix forum? that doesn't seem quite right. I have code that I wrote to run on windows using Cygwin ("unix style&quot compiler. I copied and pasted it into a visual c++ workspace to be run with a dialog window. This is certainly a Visual C++ question.

 

[Cagliostro]

LOL John Fill

ivfmd@mail.md

 

[Cagliostro]

Instead of making a code to be VisualC++ after copy/paste from a less compatibility library, you try to make it Unix. At the first, if you're using CString, set in project settings Using MFC as a Shared DLL or as a statically linked library. John Fill

ivfmd@mail.md