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Geek Culture / Equivalent of C "size of" in VB6?

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Arkheii
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Posted: 28th Apr 2004 16:22
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I'd as in a vb forum, but they aren't too active over there. Anyway, I'm trying to make a window entirely through Windows API calls in VB6 (Yeah, I'm stupid ), but I'm a VB newbie, and I need to use "size of" to fill in the WNDCLASSEX struct. Anyone know the VB equivalent?

Oh, and I know that API calls are kinda advanced stuff for a vb noob, but it's just a freak experiment I plan to cook up before going to bed. Haha, wala lang.


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Rob K
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Posted: 28th Apr 2004 16:28
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Can't answer the question, but trying to use the Windows API like this in VB is just making life difficult for yourself. Not only do you have to copy all the various constant declarations from the WinAPI tool, but you have to convert the datatypes over as well.

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Arkheii
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Posted: 28th Apr 2004 16:39
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Yeah I know. I'm just bored and decided to play with VB. I kinda got over excited when I learned in a different forum that the API can be accessed just as if using C++. The API text viewer is kinda nifty though. Maybe I'll use it next time for simpler stuff. Thanks for holding my tail and keeping me from jumping off a cliff though.


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Dave J
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Posted: 28th Apr 2004 16:50
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Len()


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Arkheii
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Posted: 28th Apr 2004 17:08
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Cool, I never knew it worked on types. Stupid book only mentioned strings.

BTW, any idea on how to fill in WNDCLASSEX.lpfnWndProc in VB?


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CattleRustler
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Posted: 28th Apr 2004 17:57
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maybe this will help

http://www.mangovision.com/vbapi/ref/w/wndclassex.html


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Arkheii
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Posted: 29th Apr 2004 06:59
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Thanks for the link CattleRustler. But I also found

http://www.mentalis.org/


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Rob K
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Posted: 29th Apr 2004 16:52
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Quote: "Cool, I never knew it worked on types. Stupid book only mentioned strings."


I think that is a design fault in Visual BASIC. I think that there should be a seperate sizeof() operator as comparing a string length is not the same as finding the byte-size of an integer for example. len("DBPro") would return 5 for example, whilst I would expect sizeof("DBPro") to return the size of VB's internal string type. Its different to other languages and confusing as you have just found out.

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hyrichter
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Posted: 29th Apr 2004 17:17
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Quote: " think that is a design fault in Visual BASIC. I think that there should be a seperate sizeof() operator as comparing a string length is not the same as finding the byte-size of an integer for example."


That's what you use lenb() for. It returns the length in bytes of an expression. I believe this is the command you are looking for. Len("DBPro") returns 5, of course, while Lenb("DBPro") returns 10. I never knew this command existed until a few months ago while looking at some example source code in a VB book I have.

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CattleRustler
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Posted: 29th Apr 2004 17:50
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yeah there is a whole slew of these "+b" commands in VB6


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