[vwnc] DLLCC and GetMessage
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Hi list,
I'm new to DLLCC as well as to using Winapi. I'm experimenting with sending and receiving Windows messages between applications. So far, I have been successfull in using SendMessage to a specific window or as a broadcast (tried to send message to non-VW application which received it successfully). However I am unable to receive that message in my VW image. I do receive some other messages, though... I am suspecting Smalltalk VM to receive the messages and never forwarding them (or whatever the mechanism is). Does anyone have any experience with this stuff? Thanks in advance for any hints. Karel _______________________________________________ vwnc mailing list [hidden email] http://lists.cs.uiuc.edu/mailman/listinfo/vwnc |
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Did you have a tracer to ensure that the other application is indeed sending it as expected. If its TCP-IP then you should be able to use tcp_trace -Skrish
On Thu, Jul 23, 2009 at 2:13 PM, Karel Beyr <[hidden email]> wrote: Hi list, _______________________________________________ vwnc mailing list [hidden email] http://lists.cs.uiuc.edu/mailman/listinfo/vwnc |
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Hi
I was sending messages between two Smalltalk images.. When I sent a broadcast message, all non-Smalltalk applications received it, but the other Smalltalk image did not. This was true as well for message that had its receiver's HWND filled in - when I filled non-Smalltalk application's hwnd, it was received, when I filled in other Smalltalk's image hwnd, it was not received. I am not using TCP-IP, I'm using winapi messaging system. ( http://msdn.microsoft.com/en-us/library/ms632590%28VS.85%29.aspx ). Thanks Karel Sudhakar Krishnamachari wrote: > Did you have a tracer to ensure that the other application is indeed > sending it as expected. > If its TCP-IP then you should be able to use tcp_trace > -Skrish > > On Thu, Jul 23, 2009 at 2:13 PM, Karel Beyr <[hidden email] > <mailto:[hidden email]>> wrote: > > Hi list, > I'm new to DLLCC as well as to using Winapi. I'm experimenting with > sending and receiving Windows messages between applications. > > So far, I have been successfull in using SendMessage to a specific > window or as a broadcast (tried to send message to non-VW application > which received it successfully). However I am unable to receive that > message in my VW image. I do receive some other messages, though... > > I am suspecting Smalltalk VM to receive the messages and never > forwarding them (or whatever the mechanism is). > > Does anyone have any experience with this stuff? > > Thanks in advance for any hints. > > Karel > > _______________________________________________ > vwnc mailing list > [hidden email] <mailto:[hidden email]> > http://lists.cs.uiuc.edu/mailman/listinfo/vwnc > > _______________________________________________ vwnc mailing list [hidden email] http://lists.cs.uiuc.edu/mailman/listinfo/vwnc |
Re: [vwnc] DLLCC and GetMessage
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In reply to this post by Karel Beyr
Hello Karel,
receiving user defined Windows messages is a bit tricky. Normally you implement them in the message queue of your Application. In VW this is a bit different. The VM maintains the Windows message queue and delegate the messages to the appropriate controller. And now it get's ugly: There is no configurable hook for unknown Windows events. You have to override the method ApplicationWindow >> unknownEvent:. You may load the parcel Windows Goodies for examples. The method unknownEvent: is overridden to add drag and drop and shutdown functionality. Look also for the method MyFileBrowser >> windowEvent:from: and MyFileBrowser >> handleDropEvent: as example where to implement the functionality. Hope this helps Clemens > Hi list, > I'm new to DLLCC as well as to using Winapi. I'm experimenting with > sending and receiving Windows messages between applications. > > So far, I have been successfull in using SendMessage to a specific > window or as a broadcast (tried to send message to non-VW application > which received it successfully). However I am unable to receive that > message in my VW image. I do receive some other messages, though... > > I am suspecting Smalltalk VM to receive the messages and never > forwarding them (or whatever the mechanism is). > > Does anyone have any experience with this stuff? > > Thanks in advance for any hints. > > Karel > > _______________________________________________ > vwnc mailing list > [hidden email] > http://lists.cs.uiuc.edu/mailman/listinfo/vwnc > > > -- Clemens Hoffmann Senior Consultant Email: [hidden email] Tel: +49 231 975 99 31 Fax: +49 231 975 99 20 Georg Heeg eK Dortmund Handelsregister: Amtsgericht Dortmund A 12812 _______________________________________________ vwnc mailing list [hidden email] http://lists.cs.uiuc.edu/mailman/listinfo/vwnc |
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Hi
You are right. Thank you very much! Karel Clemens Hoffmann wrote: > Hello Karel, > > receiving user defined Windows messages is a bit tricky. Normally you > implement them > in the message queue of your Application. In VW this is a bit > different. The VM maintains > the Windows message queue and delegate the messages to the appropriate > controller. > > And now it get's ugly: There is no configurable hook for unknown > Windows events. You > have to override the method ApplicationWindow >> unknownEvent:. You > may load the > parcel Windows Goodies for examples. The method unknownEvent: is > overridden to add > drag and drop and shutdown functionality. Look also for the method > MyFileBrowser >> windowEvent:from: and MyFileBrowser >> > handleDropEvent: as example > where to implement the functionality. > > Hope this helps > > Clemens > >> Hi list, >> I'm new to DLLCC as well as to using Winapi. I'm experimenting with >> sending and receiving Windows messages between applications. >> >> So far, I have been successfull in using SendMessage to a specific >> window or as a broadcast (tried to send message to non-VW application >> which received it successfully). However I am unable to receive that >> message in my VW image. I do receive some other messages, though... >> >> I am suspecting Smalltalk VM to receive the messages and never >> forwarding them (or whatever the mechanism is). >> >> Does anyone have any experience with this stuff? >> >> Thanks in advance for any hints. >> >> Karel >> >> _______________________________________________ >> vwnc mailing list >> [hidden email] >> http://lists.cs.uiuc.edu/mailman/listinfo/vwnc >> >> >> _______________________________________________ vwnc mailing list [hidden email] http://lists.cs.uiuc.edu/mailman/listinfo/vwnc |
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In reply to this post by Clemens Hoffmann
Clemens Hoffmann schrieb:
> Hello Karel, > > receiving user defined Windows messages is a bit tricky. Normally you > implement them > in the message queue of your Application. In VW this is a bit different. > The VM maintains > the Windows message queue and delegate the messages to the appropriate > controller. > > And now it get's ugly: There is no configurable hook for unknown Windows > events. You have to override the method ApplicationWindow >> unknownEvent:. You may > load the > parcel Windows Goodies for examples. The method unknownEvent: is > overridden to add > drag and drop and shutdown functionality. Couldnt that be rewritten in the way that the VM simply catches all windows messages, forwards them to a general controller which delegates (or not), depending on some dictionary (key: wm_message, value-> method_symbol)? That way, you just have to adjust a dictionary, you could even strip it if you do not want to "receive" certain messages. The way it is handled now strikes me as rather ... inflexible. _______________________________________________ vwnc mailing list [hidden email] http://lists.cs.uiuc.edu/mailman/listinfo/vwnc |
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