Re: Console Input Saved To Text File !!!!!!! New To C++ - C / C++ / MFC Discussion Boards

Waldermort14-Sep-06 4:41

14-Sep-06 4:41

I'm not very sure how to code this one. I have a base class and 3 derived classes. All of the derived classes need use of a timer, which I think is best to place in the base class. Is it possible for the baseclass to call derived class functions?

Re: subclassing

Cedric Moonen14-Sep-06 4:46

Cedric Moonen

14-Sep-06 4:46

Yes, if you declare the function virtual, then if the function is redefined in the derived classes, this one will be called.

Cédric Moonen
Software developer

Charting control [Updated - v1.1]

Re: subclassing

Waldermort14-Sep-06 5:30

Waldermort

14-Sep-06 5:30

Thankyou

Re: subclassing

Jun Du14-Sep-06 6:14

Jun Du

14-Sep-06 6:14

Hey, what Cedric said is called "polymorphism", which works only when you use pointers to reference objects. So this would call the overridden method:

YourBaseClass *p = new YourDerivedClass();
p->SomeFunction();

But this wouldn't:

YourBaseClass obj;
obj.SomeFunction();

Best,
Jun

Re: subclassing

ThatsAlok14-Sep-06 21:18

ThatsAlok

14-Sep-06 21:18

waldermort wrote:
All of the derived classes need use of a timer, which I think is best to place in the base class. Is it possible for the baseclass to call derived class functions?

Beware Active Derived Class member will receive the call!

"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

Re: subclassing

ThatsAlok14-Sep-06 21:34

ThatsAlok

14-Sep-06 21:34

waldermort wrote:
All of the derived classes need use of a timer, which I think is best to place in the base class. Is it possible for the baseclass to call derived class functions?

Beware Active Derived Class member will receive the call only

"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

Console Input Saved To Text File !!!!!!! New To C++

Mark_Murphy14-Sep-06 3:42

Mark_Murphy

14-Sep-06 3:42

Hi

Can anyone give me any guide lines as web searches have been unsucessful

I want to be able to save input from a console application to a text file.

eg: if a user inputs their "name" via cin on the console, how do you save the name to a text file.

I have just started learning if/ofstream classes and have a basic understanding, so if you could show me some examples of the code to save the input to a text file I would be grateful. Also I wish to append new data to the same file so if you could also advise me if the use of "ios::app" is the correct way of doing this without over writing old data.

Thanks in advance.

The problem with political jokes is they get elected.

Re: Console Input Saved To Text File !!!!!!! New To C++

Zac Howland14-Sep-06 3:57

Zac Howland

14-Sep-06 3:57

To use ofstream the way you specified:

char name[20] = {0};
ofstream fout;
fout.open("mylog.log", ios::app);	// create the file if it doesn't exist, append to it if it does
cin >> name;
fout << name;
// whatever else you want to do
fout.close();	// when you are done with it

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

Re: Console Input Saved To Text File !!!!!!! New To C++

Mark_Murphy14-Sep-06 4:10

Mark_Murphy

14-Sep-06 4:10

Cheers Zac

Thanks for the prompt response.
Worked first time on your advise.

Many thanks.

The problem with political jokes is they get elected.

Smart Card Driver Version

irit14-Sep-06 3:33

irit

14-Sep-06 3:33

how do I, programmatically, get the driver's version (to simulate the device manager data --> driver's properties)?

thanx

How to execute simple c++ file by microsoft visual studio 6

alpa shah14-Sep-06 3:12

alpa shah

14-Sep-06 3:12

Hello all..
I am very new to MFC. so please suggest me how can i create my simple .cpp file by VC++ without creating any workspace....If it is possible than plz tell me the way...

Egarly waiting for reply...Please reply soon
Thank you for reading this message....

alpa shah

Re: How to execute simple c++ file by microsoft visual studio 6

prasad_som14-Sep-06 3:19

prasad_som

14-Sep-06 3:19

Haven't you checked Files tab, when used New option from File menu?

Prasad
Notifier using ATL

Re: How to execute simple c++ file by microsoft visual studio 6

alpa shah14-Sep-06 3:23

alpa shah

14-Sep-06 3:23

I'm really sorry for that...but i am totally new to MFC....thanks for your Smile | :)

help...now i will check it...and send you reply about that...

alpa shah

Re: How to execute simple c++ file by microsoft visual studio 6

alpa shah14-Sep-06 3:27

alpa shah

14-Sep-06 3:27

I have tried this direct file creation...but dear it didn't work..because it requires to create a workspace..so simple might not be work..that i was asking.. Smile | :)

Againg thanks for your suggestion...and thanks for reading my question....

alpa shah

Re: How to execute simple c++ file by microsoft visual studio 6 [modified]

prasad_som14-Sep-06 3:41

prasad_som

14-Sep-06 3:41

alpa shah wrote:
I have tried this direct file creation...but dear it didn't work..because it requires to create a workspace

You can create .cpp file without workspace. But as mentioned earlier, thats not what you required.

-- modified at 10:12 Thursday 14th September, 2006

Prasad
Notifier using ATL[^] | Operator new,delete[^]

Re: How to execute simple c++ file by microsoft visual studio 6

toxcct14-Sep-06 3:21

toxcct

14-Sep-06 3:21

if you use VisualC++ (whatever vesion), you must create a workspace (or a solution, both appelations are same depending on the IDE). otherwise, you'll have to use the command line to call the compiler/linker yourself, but i don't advise you to, because if you are new, yo go directly to the headaches !!

creating a new project is not a that difficult task. take few minutes to experiment the IDE.

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: How to execute simple c++ file by microsoft visual studio 6

Mr.Brainley14-Sep-06 3:25

Mr.Brainley

14-Sep-06 3:25

Well you can create such a file simple by choosing New/File in the File menu, but i don't think thats what you want. It really depends on what kind of Application/Library etc. you want to create. The simplest i think is to create a new Project from the Win32 Console Application Template. Just use File/New/Project, then choose Win32 Console Application under Visual C++ Projects and enter a project name, then hit ok. Next window hit OK again, default options should suffice for now. In your project explorer (usually on the right side) you will find a .cpp file with the name of your project. This file contains an empty body of the main function. You can write your code here. Then hit Strg+F5 to execute.

So much for a short total beginners tutorial. Hope that was helpfull and not too low Wink | ;)

Re: How to execute simple c++ file by microsoft visual studio 6

alpa shah14-Sep-06 3:29

alpa shah

14-Sep-06 3:29

Thank you for this help..I am going to try this out... Smile | :)

alpa shah

Re: How to execute simple c++ file by microsoft visual studio 6

alpa shah14-Sep-06 3:32

alpa shah

14-Sep-06 3:32

Thank you....It's working.... Smile | :)

alpa shah

Re: How to execute simple c++ file by microsoft visual studio 6

toxcct14-Sep-06 4:03

toxcct

14-Sep-06 4:03

the OP wants an MFC project, not Win32 console D'Oh! | :doh:

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: How to execute simple c++ file by microsoft visual studio 6

Hamid_RT15-Sep-06 7:07

Hamid_RT

15-Sep-06 7:07

I help to you first what do you need? if see in File->New you can create many projects but it seems that you are new so you can create a MFC Application and next step in Application Type use Dialog based and click Finish button for compile in Debug menu select->Start Without Debugging.
If you have any problem maybe i can help to you

WhiteSky

How to make the XP style menu useing "GuiToolkit MFC Extension" library?

gomez_a14-Sep-06 2:55

gomez_a

14-Sep-06 2:55

I want to ask about some help with: "GuiToolkit MFC Extension"
http://www.codeproject.com/library/guitoolkit.asp

I am writeing the MFC application (VS2003 Std - I am not useing the document-view architecture!). I do some practice with the GuiToolkit library. I can create a button or combobox. But I can not to make XP Style menu. I see this examples in folders: CGuiAccess or CGuiTabbedDemo, but it shows me in the old way.

Regards
mwgomez
Poland

Re: How to make the XP style menu useing "GuiToolkit MFC Extension" library?

gomez_a14-Sep-06 2:57

gomez_a

14-Sep-06 2:57

Of course the examples from GuiLib are running propperly.

Regards
mwgomez
Poland

Change font of a control

Mohammad A Gdeisat14-Sep-06 2:45

Mohammad A Gdeisat

14-Sep-06 2:45

Hi all,

I want to change the font of a control, specifically CListView control, I know how to create a font, and how to select it into a device context, lets assume that my font is ready to use (MyFont), in what dc should I select it???

I have tried:
MyListView.GetDC()->SelectObject(&MyFont);
and
MyListView.GetListCtrl().GetDC()->SelectObject(&MyFont);

and neither of them works!!! so whats the problem?????????

And ever has it been that love knows not its own depth until the hour of separation

Re: Change font of a control

David Crow14-Sep-06 2:56

David Crow

14-Sep-06 2:56

Have you tried the SetFont() method?

"Talent without discipline is like an octopus on roller skates. There's plenty of movement, but you never know if it's going to be forward, backwards, or sideways." - H. Jackson Brown, Jr.

"Judge not by the eye but by the heart." - Native American Proverb

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.