C / C++ / MFC

30-Nov-02 12:47

The only sort of image you can print is one you have in memory. Therefore, to print a jpeg, you must first load it, using GDI+, or an external library. Then you just StretchBlt it to a printer DC, making sure to first set COLORONCOLOR as the mode for the DC.

Christian

No offense, but I don't really want to encourage the creation of another VB developer. - Larry Antram 22 Oct 2002

Hey, at least Logo had, at it's inception, a mechanical turtle. VB has always lacked even that... - Shog9 04-09-2002

Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002

.txt-File

Lucky200230-Nov-02 11:56

30-Nov-02 11:56

hello @all,

how can i write a CString into a .txt - file?

thank you very much

lucky

PJ Arends30-Nov-02 12:11

PJ Arends

30-Nov-02 12:11

CStdioFile::WriteString() is the easiest way.

CPUA 0x5041

Sonork 100.11743 Chicken Little

"So it can now be written in stone as a testament to humanities achievments "PJ did Pi at CP"." Colin Davies

Within you lies the power for good - Use it!

Lucky200230-Nov-02 12:23

30-Nov-02 12:23

can you give me an example?

how can i give the txt-file a name...etc..???
(the txt does not exist)

thanks a lot.
lucky

PJ Arends30-Nov-02 14:46

PJ Arends

30-Nov-02 14:46

CString MyCString = "The Text";
CStdioFile csf("FileName.txt",
    CFile::modeCreate | CFile::modeWrite | CFile::shareDenyNone);
csf.WriteString(MyCString);

Be sure to look up CStdioFile in MSDN.

Lucky20021-Dec-02 12:11

1-Dec-02 12:11

Great!!!!!!!!!!!!!

thank you very much. After it I searched exactly.

lucky Rose | [Rose]

Christian Graus30-Nov-02 12:44

30-Nov-02 12:44

If you want to use standard C++, the easiest way is this:

#include<iostream>
#include<fstream>

std::ofstream out("c:\myfile.txt");
out << myCString.GetBuffer();
myCString.ReleaseBuffer(0);

Something like that. An iostream inserter for CString is easy to write, I believe I did one in my inserters article. After that, you could just do out << myCString; Actually, that might work anyhow, but I suspect not.

Of course, iostreams adds about 40k to your final .exe, so if you don't care about using standard C++, you can use the MFC classes, which I'm afraid I am not very familiar with.

Christian

No offense, but I don't really want to encourage the creation of another VB developer. - Larry Antram 22 Oct 2002

Hey, at least Logo had, at it's inception, a mechanical turtle. VB has always lacked even that... - Shog9 04-09-2002

Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002

Lucky200230-Nov-02 13:02

30-Nov-02 13:02

my complete program is written in MFC and i think it is better the MFC classes to be used.

do you know links to articles to this topic?

thank you very much.

lucky

Christian Graus30-Nov-02 13:08

30-Nov-02 13:08

Lucky2002 wrote:
my complete program is written in MFC and i think it is better the MFC classes to be used.

Why ? Do you think they will work better ? The standard C++ classes almost always are better than the MFC alternatives, as well as working outside MFC ( i.e. the reason the MFC offers you a bare bones, no-where near as good alternative is to tie you to MFC and to Windows in general ).

Lucky2002 wrote:
do you know links to articles to this topic?

www://msdn.microsoft.com[^]

Christian

No offense, but I don't really want to encourage the creation of another VB developer. - Larry Antram 22 Oct 2002

Hey, at least Logo had, at it's inception, a mechanical turtle. VB has always lacked even that... - Shog9 04-09-2002

Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002

Lucky200230-Nov-02 13:18

30-Nov-02 13:18

Do you think they will work better ?

i do not think in this way.
i think your idea is very good and i will try it tomorrow.

thank you for the answer.

lucky Rose | [Rose]

Nick Parker30-Nov-02 18:28

Nick Parker

30-Nov-02 18:28

Christian Graus wrote:
Actually, that might work anyhow, but I suspect not.

You are correct, it asserts, that was the first thing I tried. However as you said something like this will work:

    #inclide <iostream>
    #include <fstream>
    using namespace std;
std::ofstream of;
CString m_str;
m_str = "Writing this text";
of.open("test.txt", ios::out);
of << m_str.GetBuffer(sizeof(m_str));
m_str.ReleaseBuffer(0);
of.close();

Nick Parker

Christian Graus30-Nov-02 21:50

30-Nov-02 21:50

Just to clean this code up a little.....

#include <iostream>
#include <fstream>

std::ofstream of ("test.txt"); // ios::out is implicit, it's an ostream.  And why did you use all of namespace std and then scope it explicitly as well ???

CString m_str("Some string");
of << m_str.GetBuffer(m_str.GetLength());
m_str.ReleaseBuffer(0);

// you can close it if you like, but being a C++ class, it will do it itself when it goes out of scope.

Christian

No offense, but I don't really want to encourage the creation of another VB developer. - Larry Antram 22 Oct 2002

Hey, at least Logo had, at it's inception, a mechanical turtle. VB has always lacked even that... - Shog9 04-09-2002

Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002

Nick Parker1-Dec-02 1:38

Nick Parker

1-Dec-02 1:38

Christian Graus wrote:
Just to clean this code up a little.....

Blush | :O

Christian Graus wrote:
And why did you use all of namespace std and then scope it explicitly as well ???

Again, Blush | :O

. I was just typing something up quickly, thanks for pointing out some corrections. Wink | ;)

Christian Graus wrote:
// you can close it if you like, but being a C++ class, it will do it itself when it goes out of scope.

I do this just out of practice, no other reason because it doesn't hurt. Smile | :)

Nick Parker

Christian Graus1-Dec-02 2:33