Re: expression evaluation problem - C / C++ / MFC Discussion Boards

Re: how to use lpfnhook to keep view of dialog?

CPallini22-Oct-09 0:17

22-Oct-09 0:17

The article author solved some difficult problems in order to accomplish that task. MFC or Win32 doesn't really matter: you can easily adapt the MFC stuff to Win32 API. You know, MFC is a thin wrapper around it.
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.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Re: how to use lpfnhook to keep view of dialog?

002comp22-Oct-09 0:30

002comp

22-Oct-09 0:30

I agree with u tht MFC is thin wrapper around win32.But i hv no idea abt MFC really,so only i was asking.
Anyway,Thx for ur valuable time for my posts.

Regards
Yogesh

Re: how to use lpfnhook to keep view of dialog?

CPallini22-Oct-09 0:41

CPallini

22-Oct-09 0:41

yogeshs wrote:
I agree with u tht MFC is thin wrapper around win32.But i hv no idea abt MFC really

Just handle messages the way the article's author did, using your hook procedure and Win32 API.
Smile | :)

Re: how to use lpfnhook to keep view of dialog?

Michael Schubert22-Oct-09 0:54

Michael Schubert

22-Oct-09 0:54

yogeshs wrote:
I agree with u tht MFC is thin wrapper around win32

yogeshs wrote:
i hv no idea abt MFC really

Thanks. The weather today is really depressing (dark, rain). I needed this to cheer me up.

By the way, you seem to have some sort of keyboard malfunction:

yogeshs wrote:
u tht

yogeshs wrote:
i hv

yogeshs wrote:
Thx

yogeshs wrote:
ur

yogeshs wrote:
abt

Re: how to use lpfnhook to keep view of dialog?

Richard MacCutchan22-Oct-09 1:40

Richard MacCutchan

22-Oct-09 1:40

Michael Schubert wrote:
By the way, you seem to have some sort of keyboard malfunction:

Re: how to use lpfnhook to keep view of dialog?

David Crow22-Oct-09 3:10

David Crow

22-Oct-09 3:10

Michael Schubert wrote:

By the way, you seem to have some sort of keyboard malfunction:

Sadly, I think the keyboard is doing exactly what it was instructed to do.

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

expression evaluation problem

fcis200821-Oct-09 23:05

fcis2008

21-Oct-09 23:05

How Can I evaluate an axpression in string ?

for example :

string x = "(6+9)/5-9";
string y = "Ln(10)+cos(30)-55";

How Can I evaluate that in visual studio ?

Is there a FREE parser that does these operations ?

I'm using vb 6

Re: expression evaluation problem

Rajesh R Subramanian21-Oct-09 23:15

Rajesh R Subramanian

21-Oct-09 23:15

fcis2008 wrote:
string x = "(6+9)/5-9";

C++ isn't something like VB, where you can ~~assign~~ dump anything into any datatype. C++ requires you to know what you're doing.

If the result of your expression is a number, then assign it to a number and then 'store' it into the string with one of those string formatting functions.

int nVal = (6+9)/5-9;
TCHAR str[42];
_tprintf(str, _T("%d"), nVal);

You could alternatively write your own string class which does the conversion implicitly for you, by having the appropriate operators overloaded and enabling you to write statements of that sort where you assign an expression to a your string class object.

“Follow your bliss.” – Joseph Campbell

Re: expression evaluation problem

Michael Schubert22-Oct-09 0:32

Michael Schubert

22-Oct-09 0:32

Rajesh R Subramanian wrote:
C++ isn't something like VB, where you can dump anything into any datatype. C++ requires you to know what you're doing.

Well said! Take 5.

Re: expression evaluation problem

CPallini22-Oct-09 0:54

CPallini

22-Oct-09 0:54

Michael Schubert wrote:
Rajesh R Subramanian wrote:
C++ isn't something like VB, where you can dump anything into any datatype. C++ requires you to know what you're doing.

Well said! Take 5.

Anyway, that's no true. Poke tongue | ;-P

Re: expression evaluation problem

Michael Schubert22-Oct-09 0:55

Michael Schubert

22-Oct-09 0:55

CPallini wrote:
Anyway, that's no true.

Which part?

Re: expression evaluation problem

CPallini22-Oct-09 1:42

CPallini

22-Oct-09 1:42

"VB, where you can dump anything into any datatype"
Smile | :)

Re: expression evaluation problem

Michael Schubert22-Oct-09 1:49

Michael Schubert

22-Oct-09 1:49

Really? Maybe they changed that in VB.NET. I haven't looked at VB in many years.

Re: expression evaluation problem

CPallini22-Oct-09 1:54

CPallini

22-Oct-09 1:54

I'm talking about VB6.
Smile | :)

Re: expression evaluation problem

Rajesh R Subramanian22-Oct-09 21:06

Rajesh R Subramanian

22-Oct-09 21:06

I know you have a secret fetish for VB6 (the main reason why you got into programming), but there's no need to support it here. Poke tongue | ;-P

“Follow your bliss.” – Joseph Campbell

Re: expression evaluation problem

CPallini22-Oct-09 21:11

CPallini

22-Oct-09 21:11

Rajesh R Subramanian wrote:
I know you have a secret fetish for VB6 (the main reason why you got into programming)

The only reason!
Laugh | :laugh:

Re: expression evaluation problem

Cedric Moonen21-Oct-09 23:15

Cedric Moonen

21-Oct-09 23:15

fcis2008 wrote:
I'm using vb 6

Is this a typo ? Are you using visual basic or visual C++ ? Because this is the C++ forum, so if it is a question for Visual Basic, then you should post in the VB forum.

Anyway, if you are using C++, take a look at this article[^]

Cédric Moonen
Software developer

Charting control [v2.0]
OpenGL game tutorial in C++

Re: expression evaluation problem

CPallini21-Oct-09 23:22

CPallini

21-Oct-09 23:22

You application may host a scripting language.
Smile | :)

Re: expression evaluation problem

Stuart Dootson22-Oct-09 0:44

Stuart Dootson

22-Oct-09 0:44

If you're using C++ (and if not, why have you posted in this forum?), then this article[^] contains just what you need.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

[Message Deleted]

Nicholas Amh21-Oct-09 22:51

Nicholas Amh

21-Oct-09 22:51

[Message Deleted]

Re: Need urgent help for CFile read mode

Richard MacCutchan21-Oct-09 23:04

Richard MacCutchan

21-Oct-09 23:04

Nicholas Amh wrote:
Can someone help me out.

How many more times do you need to have this explained to you before you realise that you are totally out of your depth on this? You have had lots of suggestions as to what you need to do but you obviously don't have the basic knowledge to implement them. I would suggest that you get hold of some books on basic C++ and Windows Programming and work through the sample code to get the understanding and skills you need to solve this problem.

Reposting the same question every day is just getting you more confused.

In different LAN Client know each Extranet IP and Port can they success connect? [modified]

jeansea21-Oct-09 21:59

jeansea

21-Oct-09 21:59

hey everybody

I want to implement file transmisstion between two client peer in

different LAN.

they get each Extranet IP and Port through http server(when they visit a

site like www.codeproject.com i will return other Extranet IP and Port)

when CLientA get ClienB Extranet Ip And Port ClientA will connect To ClinetB

in the same time ClientB Will Bind To Local Port and begin listen

my problem that can the connect oK ?，I have tested is fail but i want to know

why failed can someone tell me why

thanks

modified on Thursday, October 22, 2009 4:42 AM

Re: In different LAN Client know each Extranet IP and Port can they success connect?

Randor 21-Oct-09 22:13

Randor

21-Oct-09 22:13

Hi,

Sounds like an excellent project. When will you have it completed? Big Grin | :-D