some interview questions
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1)first function to be called in the dialog based application? ANS) OnInitDialog(...) 2)can we change modal to modeless? ANS) ModelDilag -> DoModel(..) ModelLess -> Create(IDD_DIALOGRESOUCE,this) ->Show(SW_SHOW); uday kiran
kiran janaswamy wrote:
OnInitDialog(...)
How can u say that OnInitDialog is the first function that is been called in a dialog based application? I think it is the constructor of the app class that is been called first...:-D Even if ur saying about a Dialog class there are so many other functions that gets called before OnInitDialog..say PreSubClassWindow(), etc including the constructor of the dialog class;) nave
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kiran janaswamy wrote:
1)first function to be called in the dialog based application? ANS) OnInitDialog(...)
Depends of what the reference is: the dialog, the application or MFC core. InitInstance of the Application class is called before OnInitDialog and take care of the creation of the dialog.
kiran janaswamy wrote:
2)can we change modal to modeless? ANS) ModelDilag -> DoModel(..) ModelLess -> Create(IDD_DIALOGRESOUCE,this) ->Show(SW_SHOW);
It is not really changing from Modal to modeless, it is just creating a modal and a modeless dialog separately.
Cedric Moonen wrote:
Depends of what the reference is: the dialog, the application or MFC core.
i'd say that for any case, the first method called is the constructor of the object to be created :rolleyes:
TOXCCT >>> GEII power
[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]
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Cedric Moonen wrote:
Depends of what the reference is: the dialog, the application or MFC core.
i'd say that for any case, the first method called is the constructor of the object to be created :rolleyes:
TOXCCT >>> GEII power
[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]
For me, the first method to be called is the main function :rolleyes:. That's why it's important to see what they mean by 'first': first function (at all), first app function (with or without constructor included), ... So, it is very vague
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For me, the first method to be called is the main function :rolleyes:. That's why it's important to see what they mean by 'first': first function (at all), first app function (with or without constructor included), ... So, it is very vague
Cedric Moonen wrote:
That's why it's important to see what they mean by 'first':
BIOS loading... :laugh:
TOXCCT >>> GEII power
[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]
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For me, the first method to be called is the main function :rolleyes:. That's why it's important to see what they mean by 'first': first function (at all), first app function (with or without constructor included), ... So, it is very vague
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Cedric Moonen wrote:
For me, the first method to be called is the main function
One doubt? In a MFC Dialog based application there is global varaible of app class.. So before calling the main funtion surely its constructor is called..isn't it? nave
actually, in MFC, you don't excplicity write the main function, but it exists, within the framework.
TOXCCT >>> GEII power
[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]
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actually, in MFC, you don't excplicity write the main function, but it exists, within the framework.
TOXCCT >>> GEII power
[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]
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toxcct wrote:
but it exists, within the framework.
I agree with that one.. But "Cedric Moonen " say the first function called is main. Before calling the main the constructor of the app class is called isn't it? nave
i don't think so... the constructor of the app is called after main() started... unless the application is a global object :-D
TOXCCT >>> GEII power
[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ] -- modified at 8:07 Thursday 11th May, 2006
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i don't think so... the constructor of the app is called after main() started... unless the application is a global object :-D
TOXCCT >>> GEII power
[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ] -- modified at 8:07 Thursday 11th May, 2006
Nope, not if the App class is global. Then, first the instance of the class will be created (resulting in calling the constructor). -- modified at 7:58 Thursday 11th May, 2006
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i don't think so... the constructor of the app is called after main() started... unless the application is a global object :-D
TOXCCT >>> GEII power
[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ] -- modified at 8:07 Thursday 11th May, 2006
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Cedric Moonen wrote:
For me, the first method to be called is the main function
One doubt? In a MFC Dialog based application there is global varaible of app class.. So before calling the main funtion surely its constructor is called..isn't it? nave
Naveen R wrote:
In a MFC Dialog based application there is global varaible of app class.. So before calling the main funtion surely its constructor is called..isn't it?
Yes, constructor will be called first, you are right. I didn't remember that the application was global. When I write a console app with a kind of app object, I aleays declare it inside the main function, that's why I didn't think of that ;)
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How's that possible..:^) Global variables are initialize first then only main function is called... Try creating a simple console application.. with a global variable.. nave
yes i forgot that point... ;)
TOXCCT >>> GEII power
[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]
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Nope, not if the App class is global. Then, first the instance of the class will be created (resulting in calling the constructor). -- modified at 7:58 Thursday 11th May, 2006
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please try to answer one or more or all of some of the questions being asked in an interview: 1.)How is the message being transformed from one class to other? Diagrammatically show which class is getting the message first. 2.)What is Message Reflection? 3.)can we change modal to modeless? 4.)what would be the first function called if we create a mfc application if it is a dialog based and not a dialog based? 5.)first function to be called in the dialog based application? thaking you kumar
1.)How is the message being transformed from one class to other? Diagrammatically show which class is getting the message first. Ans In MFC ,CCmdTarget is the class responsible for message routing 4.)what would be the first function called if we create a mfc application if it is a dialog based and not a dialog based? Ans What ever may be the application type the first method to be called is Constructor followed by InitInstace.Inorder to understand what happens inside have a look over this article http://www.codeproject.com/cpp/mfcprogflow.asp[^] AppU
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1.)How is the message being transformed from one class to other? Diagrammatically show which class is getting the message first. Ans In MFC ,CCmdTarget is the class responsible for message routing 4.)what would be the first function called if we create a mfc application if it is a dialog based and not a dialog based? Ans What ever may be the application type the first method to be called is Constructor followed by InitInstace.Inorder to understand what happens inside have a look over this article http://www.codeproject.com/cpp/mfcprogflow.asp[^] AppU
Q) What is message refelection Ans This must give you an Idea http://msdn2.microsoft.com/en-US/library/eeah46xd.aspx[^]
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kiran janaswamy wrote:
OnInitDialog(...)
How can u say that OnInitDialog is the first function that is been called in a dialog based application? I think it is the constructor of the app class that is been called first...:-D Even if ur saying about a Dialog class there are so many other functions that gets called before OnInitDialog..say PreSubClassWindow(), etc including the constructor of the dialog class;) nave
Naveen R wrote:
I think it is the constructor of the app class that is been called first...:-D
What About CWinApp or CDialog Derived Class Constructor :)
"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
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Naveen R wrote:
I think it is the constructor of the app class that is been called first...:-D
What About CWinApp or CDialog Derived Class Constructor :)
"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
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Naveen R wrote:
ya I mean the same,:| not CWinApp constrcutor
i am jokin buddy!
"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