C / C++ / MFC

Hamid_RT5-Jan-08 17:55

5-Jan-08 17:55

Do you have any question?

Florin Crişan7-Jan-08 1:09

Florin Crişan

7-Jan-08 1:09

Pace si prietenie între poporul român si poporul turc...

Florin Crisan

Hakan Bulut7-Jan-08 1:26

Hakan Bulut

7-Jan-08 1:26

Please we lets type the threads in English language what become partner language in the world.

Bitte tun Sie mir nicht antworten, wenn Sie nicht wissen, die Ursache des Problems wirklich oder nur als Antwort. Was ist das? Dies ist das Buch sitzen.

Message handled in the parent class (the one inherited from) without redirectioning it manually?

Florin Crişan7-Jan-08 1:48

Florin Crişan

7-Jan-08 1:48

Hey, it wasn't me who started it...
I just didn't want to miss the fun Wink | ;)

Florin Crisan

Joan M5-Jan-08 1:30

Joan M

5-Jan-08 1:30

Hello all,

When you have two classes and one of them inherits from the first one [CB inherits from CA], you can use functions in the parent class [CA] by setting them as virtual and protected or public from the child class [CB].

I would like to know if I can do the same with Windows messages.

What do I need is to be able to process the message in the parent class [CA] and not in the child class [CB] without calling the CA event:

I don't want to do this:

void CB::OnSize(UINT nType, int cx, int cy)<br />
{<br />
  CA::OnSize(nType, cx, cy);<br />
}

Can this be automated?

As always thank you in advance.

Re: Message handled in the parent class (the one inherited from) without redirectioning it manually?

CPallini5-Jan-08 2:29

Re: Message handled in the parent class (the one inherited from) without redirectioning it manually?

5-Jan-08 2:29

Joan Murt wrote:
When you have two classes and one of them inherits from the first one [CB inherits from CA], you can use functions in the parent class [CA] by setting them as virtual and protected or public from the child class [CB].

Well if your inherited class overrides base class virtual functions, the base ones will NOT be called implicitely.

Joan Murt wrote:
I would like to know if I can do the same with Windows messages.

You have to do it explicitely.

Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

[my articles]

Joan M5-Jan-08 5:06

Joan M

5-Jan-08 5:06

I've searched for that on the Internet and not found anything and thought to ask for it here but without a lot of hope...

Anyhow this is not a lot of job so it's OK.

Thank you CPallini.

bad_alloc

George_George4-Jan-08 23:08

4-Jan-08 23:08

Hello everyone,

I am wondering except when there is no memory on heap, are there any other situations when we will get bad_alloc exceptions? For example, invalid input of the size (e.g. very huge number or zero or negative number) will cause exception?

thanks in advance,
George

CPallini5-Jan-08 0:19

5-Jan-08 0:19

MSDN http://msdn2.microsoft.com/en-us/library/6512dwes(VS.71).aspx[^] is a bit laconic about, but seems to go on the way you depicted. BTW, Why don't you make a little test and tell us your findings?
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

[my articles]

George_George5-Jan-08 2:32

5-Jan-08 2:32

Hi CPallini,

It seems bad_alloc only occurs when there is no memory or not enough memory (as showed in the sample). And we can not input invalid value, like -1, compiler will fail. Do you agree with me?

BTW: what situations do you find you met with bad_alloc?

regards,
George

CPallini5-Jan-08 4:06

5-Jan-08 4:06

George_George wrote:
It seems bad_alloc only occurs when there is no memory or not enough memory (as showed in the sample).

Maybe, see the following lines.

George_George wrote:
And we can not input invalid value, like -1, compiler will fail. Do you agree with me?

Well, a negative integer is casted to a size_t one, that is an unsigned one, since -1 turns out to a very big unsigned value (4294967295), the compiler is able to detect the error. But a silly trick like the following

int *p;
int a=1;
int b=rand()> RAND_MAX / 2 ? 1 : 2;
try {
  p= new int[-a*b];
}
catch(...)
{
  printf("Exception, George!\n");
}

makes the compiler happy but an the exception is thrown at run-time.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

[my articles]

George_George5-Jan-08 4:20

5-Jan-08 4:20

Thanks CPallini,

Cool!

regards,
George

Hamid_RT5-Jan-08 18:07

5-Jan-08 18:07

Did you check when you want to allocate memory?

George_George6-Jan-08 2:30

6-Jan-08 2:30

Thanks Hamid,

What do you mean check? Check what?

regards,
George

Hamid_RT6-Jan-08 5:16

6-Jan-08 5:16

When you want to allocate dynamic memory did you check for example use of try/catch?

George_George6-Jan-08 20:43

6-Jan-08 20:43

Hi Hamid,

Which example do you mean? URL please?

regards,
George

Hamid_RT6-Jan-08 21:10

6-Jan-08 21:10

No I said for example use of try/catch not Example. Blush | :O

George_George6-Jan-08 21:15

6-Jan-08 21:15

Hi Hamid,

I am confused, which sample do you mean? If you mean anything of this forum, could you provide a link please?

regards,
George

Hamid_RT7-Jan-08 5:26

how to set inlude of option?

7-Jan-08 5:26

No I said (for example) not a example.dont worry Wink | ;)

gentleguy4-Jan-08 22:36

gentleguy

4-Jan-08 22:36

dear all

how to set path in setting of option? anyone has experience or some detail to introduce this? thanks a lot.

Li Zhiyuan

5/1/2008

Re: how to set inlude of option?

toxcct4-Jan-08 23:36

toxcct

4-Jan-08 23:36

What are you talking about ?

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CPallini5-Jan-08 0:15