C / C++ / MFC

22-Feb-05 3:59

Actualy it is not that simple ... because i'm trying to learn and i don't have "Help" nor "MSDN" nor friends that know Visual C++ ...
My problem is with a Check_box .. i'm used to using Delphi ... in this case i don't have Delphi .. i must use Visual Studio C++ ... So I've banged my head in this small problem ...
I whant something like this ... when I click the Check_Box, a Edit_Box that was disabled, to be enabled ... this is what i've come up with :
 <code>int checkState;
CButton* pCheck = (CButton*)GetDlgItem(Check_Eagle);
if (pCheck->GetCheck() == 0) {
pCheck->SetCheck(1);}
else pCheck->SetCheck(0);
</code> Laugh | :laugh:

When i hit a Button i whant to do the check ... if GetCheck = 1 then Edit_Eagle = Enabled ... and to enter a value in the same time ... :->:-> ...

can anyone help ?

iarta, iubeste, zimbese, exprima-te, relaxeaza-te, ajuta un batrin, accepta un compliment, ascula-ti prieteii, reia un proiect abandonat, fii intelegator cu tine si cu altii, uita-te la un album cu fotografii, picteaza un tablou, asculta tacerea, aminteste-ti intotdeauna ca nu esti singur, spune-le celor ragi cit de mult ii iubesti, imagineaza-ti ca astazi nu ai nici o grija, joaca-te cu un copil, citeste o carte buna, alege-ti o stea de pe cer, fii copil inca o data, suna-ti prietenii cu care n-ai vorbit de mult, da-ti voie sa mai si gresesti, lasai pe altii sa te ajute, renunta la ce u iti place, indeplineste-ti promisiunile, inchide ochii si imagineaza-ti ca esti pe o plaja tropicala, priveste atent o floare, cumpara-ti ceva ce iti doresti de mult, spera ca ceea ce iti doresti se va indeplini, ajuta-i pe altii, respira profund, fa-ti un cadou, iubeste !!!

David Crow22-Feb-05 4:50

22-Feb-05 4:50

assasin_shark wrote:
i don't have "Help" nor "MSDN"...

Actually you do. Check out http://msdn.microsoft.com[^].

When calling GetCheck() and SetCheck(), use BST_UNCHECKED and BST_CHECKED instead of 0 and 1. It has nothing to do with your problem, but it does make the code more readable.

assasin_shark wrote:
CButton* pCheck = (CButton*)GetDlgItem(Check_Eagle);

The value passed to GetDlgItem() should be the ID of the checkbox control. Is that what Check_Eagle is, or is it a (int) variable?

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

assasin_shark22-Feb-05 4:56

22-Feb-05 4:56

DavidCrow wrote:
Actually you do. Check out http://msdn.microsoft.com.

Actualy i was there .. but .. realy .. i didn't find what i was locking for ...

DavidCrow wrote:
When calling GetCheck() and SetCheck(), use BST_UNCHECKED and BST_CHECKED instead of 0 and 1.

u mean <code>SetCheck(BST_CHECKED)</code> ?

DavidCrow wrote:
Is that what Check_Eagle is, or is it a (int) variable? 

<code>Check_Eagle</code> is the name or ID of the Check_box, yes ... Poke tongue | ;-P

iarta, iubeste, zimbese, exprima-te, relaxeaza-te, ajuta un batrin, accepta un compliment, ascula-ti prieteii, reia un proiect abandonat, fii intelegator cu tine si cu altii, uita-te la un album cu fotografii, picteaza un tablou, asculta tacerea, aminteste-ti intotdeauna ca nu esti singur, spune-le celor ragi cit de mult ii iubesti, imagineaza-ti ca astazi nu ai nici o grija, joaca-te cu un copil, citeste o carte buna, alege-ti o stea de pe cer, fii copil inca o data, suna-ti prietenii cu care n-ai vorbit de mult, da-ti voie sa mai si gresesti, lasai pe altii sa te ajute, renunta la ce u iti place, indeplineste-ti promisiunile, inchide ochii si imagineaza-ti ca esti pe o plaja tropicala, priveste atent o floare, cumpara-ti ceva ce iti doresti de mult, spera ca ceea ce iti doresti se va indeplini, ajuta-i pe altii, respira profund, fa-ti un cadou, iubeste !!!

David Crow22-Feb-05 5:02

22-Feb-05 5:02

assasin_shark wrote:
i didn't find what i was locking for ...

Specify exactly what you are looking for and someone will point you in the right direction.

assasin_shark wrote:
u mean SetCheck(BST_CHECKED) ?

Exactly.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

assasin_shark22-Feb-05 5:04

22-Feb-05 5:04

ok .. that solves one of the problems ... but the most impotant one ???

how do i do that ??? Laugh | :laugh:

David Crow22-Feb-05 5:11

22-Feb-05 5:11

assasin_shark wrote:
how do i do that ???

How do you do what? You've not specified what the problem is. The code snippet in your original post appears to be syntactically correct. What part of it is in error?

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

assasin_shark22-Feb-05 5:27

22-Feb-05 5:27

not eror ... just that i don't know how to do that ... i'll tell u again ... i whant to make an Edit_Box "Enabled" after i click the Check_Box and to enter a value also .. in te same time ... my problem is with the changing of the status of the Edit_box because of my click ... understand ? Confused | :confused:

nu prea ma fac inteles, dar incerc sa ma exprim !!!

David Crow22-Feb-05 7:19

22-Feb-05 7:19

Assuming your dialog class has a CEdit member variable mapped to the edit control, you can use:

m_ebEdit.Enabled(pCheck->GetCheck() == BST_CHECKED);

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

Ravi Bhavnani22-Feb-05 10:14

Ravi Bhavnani

22-Feb-05 10:14

Actually what David meant was:

m_ebEdit.<code>EnableWindow</code> (pCheck->GetCheck() == BST_CHECKED);

/ravi

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John R. Shaw22-Feb-05 20:38

John R. Shaw

22-Feb-05 20:38

Hummm, most of MSDN is on line (avialable via www). If you're developing the program using the VC++ IDE, then you should already have access to MSDN; otherwise there would be no help avialable when you hit F1. If you are using MFC (via VC++), then activating the class wizard will give you the option of setting the UI options (via command id) as follows:

void MyView::OnUpdateColortypeFill(CCmdUI* pCmdUI) 
{
	pCmdUI->SetCheck(m_Grid.GetColorType() == CGetColor::FILL);
}

INTP
"The more help VB provides VB programmers, the more miserable your life as a C++ programmer becomes."
Andrew W. Troelsen

assasin_shark22-Feb-05 23:02

22-Feb-05 23:02

guys .. i apreciate the help .. but it would be better if u would tell me were to put the sequence of code ... these are my arrors ....

<br />
D:\DOCUMENTELE MELE\3\3Dlg.cpp(150) : error C2653: 'MyView' : is not a class or namespace name<br />
D:\DOCUMENTELE MELE\3\3Dlg.cpp(152) : error C2065: 'm_Grid' : undeclared identifier<br />
D:\DOCUMENTELE MELE\3\3Dlg.cpp(152) : error C2228: left of '.GetColorType' must have class/struct/union type<br />
D:\DOCUMENTELE MELE\3\3Dlg.cpp(152) : error C2653: 'CGetColor' : is not a class or namespace name<br />
D:\DOCUMENTELE MELE\3\3Dlg.cpp(152) : error C2065: 'FILL' : undeclared identifier<br />
D:\DOCUMENTELE MELE\3\3Dlg.cpp(164) : error C2065: 'm_ebEdit' : undeclared identifier<br />
D:\DOCUMENTELE MELE\3\3Dlg.cpp(164) : error C2228: left of '.EnableWindow' must have class/struct/union type<br />

so .. i'm in the fog again .. Sigh | :sigh:

keyboard strokes

happycpp22-Feb-05 3:47

happycpp

22-Feb-05 3:47

hello everyone...
i have a small question:
i want to intercept keyboard strokes being sent to applications...for example i want the 'a' button to send a 'b' to applications instead of 'a'...should i use hooks or subclassing...i need to know what are the appropiate APIs that should be used..
note:i want this to be done for all applications ((processes)) not only one...

ThatsAlok22-Feb-05 6:02

ThatsAlok

22-Feb-05 6:02

Hook is better , just try global Keyboard hook.

saeedmalas wrote:
.i need to know what are the appropiate APIs that should be used..

SetWindowsHookEx(...) ,but for Global hook you have to create a dll.

look for more example here :-
http://www.codeproject.com/system/hooksys.asp
http://www.codeproject.com/system/Paladin.asp
http://www.codeproject.com/dll/hooks.asp

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happycpp22-Feb-05 8:57

happycpp

22-Feb-05 8:57

it looks like that using SetWindowsHookEx is only for monitoring not modifying...i actually want to prevent a message from reaching applications or modifying that message before reaching them..not just see what the message is...

ThatsAlok22-Feb-05 17:34

ThatsAlok

22-Feb-05 17:34

Actually after hooking you can use GetWindowLong to to get Window procedure of any window and you can modify the charater from there.

look for that in more Detail in the link given by me in last post

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happycpp23-Feb-05 4:50

happycpp

23-Feb-05 4:50

if i'm going to do that,i think i have to get the Window procedure of all windows of all processes...i think that's a very hard work..isn't there an easier way..

How to process message when writing MFC Dll?

John R. Shaw22-Feb-05 20:52

John R. Shaw

22-Feb-05 20:52

This is not a small question!

There are aticles at CP that may give you the information that you seak.

I'll tell you this much, you need to use hooks.

INTP
"The more help VB provides VB programmers, the more miserable your life as a C++ programmer becomes."
Andrew W. Troelsen

tttyip22-Feb-05 3:46

tttyip

22-Feb-05 3:46

After I read some articles about building MFC Dll in this website,
I tried to export my class as MFC dll. However, I also want my class to
handle messages, such as PostMessage, SetTimer, etc.
I want to ask that how can I use message handling ability in my class which is exported as MFC Dll?

Thanks

Re: How to process message when writing MFC Dll?

ThatsAlok22-Feb-05 5:57

ThatsAlok

22-Feb-05 5:57

Simply derived class from the CCmdTarget or it decesendent for enabling the messaage handlling in that class.

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[Vote One Here,.....]
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Best way to develop a communication

densitet22-Feb-05 1:14

densitet

22-Feb-05 1:14

Hello, I'm developing a application that does the communication wit TCP/Ip between two computers and send files between them, but i have some questions like i want to know what is the best way to develop it, for example socket or i don't know. Somebody can say me the best way ant what libraries can i use for develop it.

Thanks.

Ravi Bhavnani22-Feb-05 1:59

Ravi Bhavnani

22-Feb-05 1:59

See this[^] section, and specifically this[^] article.

/ravi

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densitet22-Feb-05 22:47

densitet

22-Feb-05 22:47

Thanks Ravi, but i have other question because i think that u know a lot. With this example i can see how can i implement my communication betwwen 2 computers with files but my applicacion start when i connect with a USB device and i have to pass the ID of the device to the server and the server has to see what files can download this device from the server. And i want to know how can i integrate my program that control the USB device and i know the ID of the device to pass this ID to the server and what will be the best way to develop the permissions in the server ( with a data base, only with text files, can u help me?, it's only to say to the client that whatever device has permiss to download for example only 5 files).

Thank you very much for your help.

/Jorge

Neville Franks22-Feb-05 9:29

Neville Franks

22-Feb-05 9:29

You could check out http://www.msgconnect.com/[^] I haven't used it, but it looks good.

And as Ravi said there are lots of articles here on tcp/ip. Would be nice to abstract your problem out to higher level concepts than tcp/ip though.

Neville Franks, Author of ED for Windows www.getsoft.com and Surfulater www.surfulater.com "Save what you Surf"