VB6 Serial Comm Crashs Visual Studio

[suguimoto]

Hello everyone, I got a really strange problem. I could make 2 computers to communicate to each other through hyperterminal, 115200,8,n,1 Hardware(CTS,RTS). Then I decide to make a VB6 program in one of those (with the same parameters). Sending data from VB6 is just fine (the hyperterminal in the other computer shows the same data), but when it receives any data the program crashes and the program manager shows 99% of the cpu is beings used by VB6 :confused::confused: Note.: There´re no infinite loops neither "OnComm" function is avaible in the algorithm. Did anyone have this problem? Or knows how to solve it? Thanks ;)

[Christian Graus]

Why would you use VB6 ? It's out of date, and was always rubbish.

Christian Graus Driven to the arms of OSX by Vista. Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

[Mycroft Holmes]

STOP throw out what you have started, download VB.net express and start again. You are using a tool that is no longer supported.

[suguimoto]

Well, it´s easy to program and does not need the whole .net framework to run with. I know it´s out of date, but it´s still reliable for simple tasks and even really old pcs can run. Thanks but... Does anyone have a clue about it?

[Luc Pattyn]

No matter how obsolete and outdated your chosen language is, Windows always has and always will require you to not touch controls from any thread other than the one that created the control, and my best guess is you are trying to receive and somehow display incoming serial data on a different thread (most asynchronous operations run on some other thread automatically). This little article[^] describes the problem and solution in .NET (using C# examples); I don't know how it looks in ancient VB. :)

Luc Pattyn

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