C / C++ / MFC

Nish Nishant21-Mar-02 21:55

21-Mar-02 21:55

Not only that. The program seemed to be quite broken.
That's why I posted a small sample program.

Nish

One Nish is trouble enough.
Imagine 16 of me, dancing wild...
:jig::jig::jig::jig:
:jig::jig::jig::jig:
:jig::jig::jig::jig:
:jig::jig::jig::jig:

Tomasz Sowinski21-Mar-02 23:40

Tomasz Sowinski

21-Mar-02 23:40

Nish [BusterBoy] wrote:
Imagine 16 of me, dancing wild...

You're dancing in very synchronized manner, Nish. I can see an opportunity for carreer in showbiz.

Smile | :)

Tomasz Sowinski -- http://www.shooltz.com
** If you're going to rape, pillage and burn, be sure to do things in that order. **

Nish Nishant21-Mar-02 23:46

21-Mar-02 23:46

Tomasz Sowinski wrote:
You're dancing in very synchronized manner, Nish. I can see an opportunity for carreer in showbiz.

Thanks. Smile | :)

Nish

One Nish is trouble enough.
Imagine 16 of me, dancing wild...
:jig::jig::jig::jig:
:jig::jig::jig::jig:
:jig::jig::jig::jig:
:jig::jig::jig::jig:

Nish Nishant21-Mar-02 21:53

21-Mar-02 21:53

#include "stdafx.h"
#include <iostream>


int main(int argc, char* argv[])
{
int ar[10],sm,lg,value;
for(value=0;value<10;value++)
std::cin >> ar[value];
sm=lg=ar[0];
for(value=0;value<10;value++)
{ 
if(ar[value]<sm)
sm=ar[value];
if(ar[value]>lg)
lg=ar[value];
}
std::cout << "smallest " << sm << "\r\n";
std::cout << "largest " << lg << "\r\n";
return 0;
}

One Nish is trouble enough.
Imagine 16 of me, dancing wild...
:jig::jig::jig::jig:
:jig::jig::jig::jig:
:jig::jig::jig::jig:
:jig::jig::jig::jig:

Form Designer

Nish Nishant21-Mar-02 21:31

21-Mar-02 21:31

There is a pretty good chance that I might be asked to write a form designer of sorts. MFC is allowed I guess.

But is there any specific path I need to follow? Are there any pre-made class libraries for this.

basic functionality includes the ability to drag and drop controls [edit boxes, combos, static boxes etc.] into an area and to be able to resize them with the mouse. Also move them around and arrange them.

It's a big ask Frown | :-(

I need to basically mimic the C#/VB form designer.

Any ideas are hugely appreciated...

Also, how do I then save it. I need to pass all this information a a server via HTTP. Need to POST data to a Java Servlet. I wonder how I can do that.

Anyway will XML be a nice way to save all this stuff???

Means also using expat or MS XML parse Frown | :-(

Nish

Chris,

Can I have a Johnny Bravo icon please?
Please, please, please........

Tomasz Sowinski21-Mar-02 23:44

Tomasz Sowinski

21-Mar-02 23:44

Designed form will be a web form? Or Win32 dialog?

Tomasz Sowinski -- http://www.shooltz.com
** If you're going to rape, pillage and burn, be sure to do things in that order. **

Nish Nishant22-Mar-02 0:00

22-Mar-02 0:00

Tomasz Sowinski wrote:
Designed form will be a web form? Or Win32 dialog?

The form will be shown in various places

(1) a web form generated by jsp/servlets
(2) a java application on linux
(3) a win32 application
(4) palm devices

The saved form will be mostly meta data. A form will consist of multiple controls and I just save their information like size, position, other custom data. Then of course there are a lot of non-visual components associated with each form and I am anticipating a MASSIVE headache for me Frown | :-(

Nish

p.s. right now I am takin it one at a time and focussin g on the drag-drop-form-designer tool

One Nish is trouble enough.
Imagine 16 of me, dancing wild...
:jig::jig::jig::jig:
:jig::jig::jig::jig:
:jig::jig::jig::jig:
:jig::jig::jig::jig:

Tomasz Sowinski22-Mar-02 0:10

Tomasz Sowinski

22-Mar-02 0:10

Doesn't sound good to me. If you need one form for the web, Win32 and other platforms, you'll need to adopt lowest common denominator approach - note that you can't place a control at (x, y) on the web page. There's something called positioning style sheets, but AFAIR it's not available on all browsers.

Ask your bosses if they really need one form for everything Smile | :)

Tomasz Sowinski -- http://www.shooltz.com
** If you're going to rape, pillage and burn, be sure to do things in that order. **

Nish Nishant22-Mar-02 0:48

22-Mar-02 0:48

Tomasz Sowinski wrote:
If you need one form for the web, Win32 and other platforms, you'll need to adopt lowest common denominator approach

This is supposed to be some kind of platform independent form. The actual rendering of the form would vary between end interfaces.

All I know is I am in deep waters now...
Expect lots of GDI doubts from poor me

Nish

One Nish is trouble enough.
Imagine 16 of me, dancing wild...
:jig::jig::jig::jig:
:jig::jig::jig::jig:
:jig::jig::jig::jig:
:jig::jig::jig::jig:

Inheritance

Jack Handy21-Mar-02 21:10

Jack Handy

21-Mar-02 21:10

I have a class CField with a public function Paint() and I derive a class from it called CMyField. I then create a CMyField m_Field private (or public) object in another class and get this error:

error C2248: 'Paint' : cannot access public member declared in class 'CField'

Any ideas?

Thanks,

Jack

Nish Nishant21-Mar-02 21:23

21-Mar-02 21:23

Can you show us your class definition line for CMyField?

Nish

Chris,

Can I have a Johnny Bravo icon please?
Please, please, please........

Jack Handy21-Mar-02 21:26

Jack Handy

21-Mar-02 21:26

The CField class:

class CField {
public:
	CField();
	virtual ~CField();
	void Paint();
	...
};

The CMyField class:

class CMyField : CField {
public:
	CMyField();
	...
};

Nish Nishant21-Mar-02 21:35

21-Mar-02 21:35

The CMyField class should be declared thus :-

class CMyField : public CField {
public:	
        CMyField();
	...
};

Notice how I have added "public"

Nish

Chris,

Can I have a Johnny Bravo icon please?
Please, please, please........

Jack Handy21-Mar-02 21:35

Jack Handy

21-Mar-02 21:35

Nish,

You are the man. Seriously, I see you answer billions of questions here and this isn't the first time you have helped me. Thanks a ton, you are a gentleman and a scholar.

-Jack

EN_KILLFOCUS...

Neha21-Mar-02 20:56

Neha

21-Mar-02 20:56

Hi,
I have an edit control, for which i had done some validation calculations when the edit control receives EN_KILLFOCUS.But after entering some value if the user doesn't click anywhere,then i would like to validate the entry.My problem is, it never recives EN_KILLFOCUS until i click on anyother control.
Any idea?
Neha

Re: EN_KILLFOCUS...

l a u r e n21-Mar-02 21:02

l a u r e n

21-Mar-02 21:02

in our app we disable the 'ok' button until all controls like you are describing have lost focus ... we also tell the clients that they must tab out of the box to get the calc to work ... another solution is to put a 'calc' button next to the box that does nothing but when they click it you get the 'lost focus' message and it all happens

heh Smile | :)

---
"all's fair in love and war but in love there is no geneva convention"

Re: EN_KILLFOCUS...

Nish Nishant21-Mar-02 21:24

Disable/Close audio Port! Very urgent

21-Mar-02 21:24

Then perhaps you could use EN_CHANGE instead

Nish

Chris,

Can I have a Johnny Bravo icon please?
Please, please, please........

Re: EN_KILLFOCUS...

Neha21-Mar-02 21:55

Neha

21-Mar-02 21:55

I have lot of calculations to be done ,also i need to update so many controls.If i write that in EN_SELCHAGE(),User might feel uncomfortable.anyway i had found a solution for my problem.Thanks for the reply.

Neha Smile | :)

Halid Niyaz21-Mar-02 20:05

Halid Niyaz

21-Mar-02 20:05

Hi,

I think you have sound to solve my problem.
i.e I want to disable my sound card port. so that i can
avoid if any application using my sound card.

either i close the port or in some other way.
i want to enable/disable port programmatically.
Please help me regarding this.

I need very urgently.

Thanks in advance.
regards
Halid
Confused | :confused:

Is gdi+ manager memory for your program?

realfly21-Mar-02 19:11

realfly

21-Mar-02 19:11

I wrote i program like this
in view's OnMouseMove function:

CView::OnMouseMove()
{
Bitmap bmp(ptTo.X, ptTo.Y);
Graphics *graphics = Graphics::FromImage(&bmp);
//then do something with the graphics
.....
//at last i did not write: delete graphics;(but the example of ms offer did not do it also)
}
then this program take tens memory and increasing.
but when i quit the program,all of the memory is released.
So can i say gdi+ has an auto memory manager like java8)

welcome discuss! Big Grin | :-D

i am realfly8)

Re: Is gdi+ manager memory for your program?

Christian Graus21-Mar-02 19:52

Christian Graus

21-Mar-02 19:52

If you create a pointer, you need to delete it. Always.

Of course the memory is freed, you're ending the process that owns it still, even if you've lost track of it my throwing the pointer away.

Christian

The tragedy of cyberspace - that so much can travel so far, and yet mean so little.

"I'm thinking of getting married for companionship and so I have someone to cook and clean." - Martin Marvinski, 6/3/2002

Re: Is gdi+ manager memory for your program?

realfly21-Mar-02 20:07

realfly

21-Mar-02 20:07

what you mean? If i do not do the "delete p" myself,
who will delete it? windows? or gdi+? if it's true, why there is because of memory leak that has to restart computer?

i am realfly8)

Re: Is gdi+ manager memory for your program?

Christian Graus21-Mar-02 20:08

Christian Graus

21-Mar-02 20:08

realfly wrote:
what you mean? If i do not do the "delete p" myself,
who will delete it? windows? or gdi+? if it's true, why there is because of memory leak that has to restart computer?

Windows will delete it when your program is closed, because your program still owns the memory, it has leaked in that you don't know where it is in order to delete it.

Christian

The tragedy of cyberspace - that so much can travel so far, and yet mean so little.

"I'm thinking of getting married for companionship and so I have someone to cook and clean." - Martin Marvinski, 6/3/2002

I test it, you are right!

realfly21-Mar-02 20:29

realfly

21-Mar-02 20:29

I wrote i program as:
char *p = new char[100000]
and didn't delete it when quit!
but the memory still comes back!8)

That's a wonderful charaterist of windows!
but I have a little doubt that when I'm using the computer,
why my memory will be used more and more?
ps:the memory release is apply to resource handle(HDC,HWND .etc)?
Thank you in advance!

i am realfly8)

Re: I test it, you are right!

Nish Nishant21-Mar-02 20:52