Event Notification in C++
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You can use the Subject, Observer pattern. HTH Jignesh
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Does anyone know of a technique to "raise events" between two class objects? For example I have class A and Class B, I make a change to one of the member variables in class B, could be 20 of them, how do I notify class A of the change so it can see what has changed and act accordingly? Sort of of like Windows WinProc? Here are some simplistic ideas I have come up with 1. Create a system timer within class A and have it poll a "isDirty" variable in B and that is when it knows something is amiss. 2. Create a message queue in class A that B would send things too, and when A has a chance respond to the message. 3. Give up C++ programming and go back to Visual Basic :-) (Not that I can do what I need to do within VB) I don't prefer C because that might weigh heavily on system performance, and 2 seems more complex than it should, and I am definitely trying to avoid 3 ! So if any C++ gurus can give me a hint or point me in the right direction I would be mighty appreciative of yous. Sam C ---- Systems Manager Hospitality Marketing Associates
The only way is to go with (3). Give up this C++ thing and code in VB. If you care for performance, implement time-critical things in assembly I've heard that there's a group of open source programmers working on porting VB to Linux, so you'll be able to quickly adapt your app to this wonderful OS. ;P I think now I'm going to reply to my own posts :-D To Chris Maunder - do I qualify for 'The Most Stupid Post in VC++ Forum' award? Like CP Mug with Bob? Tomasz Sowinski -- http://www.shooltz.com
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The only way is to go with (3). Give up this C++ thing and code in VB. If you care for performance, implement time-critical things in assembly I've heard that there's a group of open source programmers working on porting VB to Linux, so you'll be able to quickly adapt your app to this wonderful OS. ;P I think now I'm going to reply to my own posts :-D To Chris Maunder - do I qualify for 'The Most Stupid Post in VC++ Forum' award? Like CP Mug with Bob? Tomasz Sowinski -- http://www.shooltz.com
Actually, you qualify for the 'Most clever post in VC++ forum' award :( Now, let's be serious. I've read that in VC++ 7.0 we have new keywords ( _event, I think) that enables "unified event handling". Of course, it is a non-standard extension. How do you like that? :suss: I vote pro drink :beer:
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Actually, you qualify for the 'Most clever post in VC++ forum' award :( Now, let's be serious. I've read that in VC++ 7.0 we have new keywords ( _event, I think) that enables "unified event handling". Of course, it is a non-standard extension. How do you like that? :suss: I vote pro drink :beer:
Is this keyword usable outside of .NET world? I mean, they have something called Managed C++ which introduces new keywords like __gc and others. Tomasz Sowinski -- http://www.shooltz.com
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Is this keyword usable outside of .NET world? I mean, they have something called Managed C++ which introduces new keywords like __gc and others. Tomasz Sowinski -- http://www.shooltz.com
As far as I know, it has nothing to do with MC++. It is for the "native" code. I vote pro drink :beer:
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The only way is to go with (3). Give up this C++ thing and code in VB. If you care for performance, implement time-critical things in assembly I've heard that there's a group of open source programmers working on porting VB to Linux, so you'll be able to quickly adapt your app to this wonderful OS. ;P I think now I'm going to reply to my own posts :-D To Chris Maunder - do I qualify for 'The Most Stupid Post in VC++ Forum' award? Like CP Mug with Bob? Tomasz Sowinski -- http://www.shooltz.com
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As far as I know, it has nothing to do with MC++. It is for the "native" code. I vote pro drink :beer:
I know MC++ supports __event keyword (not _event as you said) to declare events through delegates, but I'm not aware that any such keyword exists in native C++. // Fazlul
Get RadVC today! Play RAD in VC++ http://www.capitolsoft.com
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I know MC++ supports __event keyword (not _event as you said) to declare events through delegates, but I'm not aware that any such keyword exists in native C++. // Fazlul
Get RadVC today! Play RAD in VC++ http://www.capitolsoft.com
If you have VS .NET Beta 2, take a look into documentation (I found this info there). I'm pretty sure, they added this "unified" event approach to native C++. I vote pro drink :beer:
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I knew I should've stuck with Visual Basic it rules!!! None of the complexities that are associated with C++ and chicks love it :-P Yeah right! ;-) Sam C ---- Systems Manager Hospitality Marketing Associates
As for complexities, I don't think VB is much simpler than C++, when you have "big" projects (I've tried both). As for chicks, I'm happily married, so this argument is also not valid for me. :cool: I vote pro drink :beer:
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As for complexities, I don't think VB is much simpler than C++, when you have "big" projects (I've tried both). As for chicks, I'm happily married, so this argument is also not valid for me. :cool: I vote pro drink :beer:
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Actually the comment was directed towards Tomasz, but since you replied...:-) We'll I have developed a ColorFORTH version of Internet Explorer and I'm happily divorced! Take that! :-D :-) (gg) Sam C ---- Systems Manager Hospitality Marketing Associates
I give up. VB is definitely better. :rolleyes: I vote pro drink :beer: