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ukandrewc

PB String functions cannot cope with Unicode either.

They all seem to. Strings passed from VB can be manipulated, parsed into arrays and sorted.

ukandrewc

thanks Tinman, I have tested a few functions in PB for speed.
As PB is faster than VB, I wanted a simple way to pass a pointer to a string and manipulate them.
As you say, the PB compiler appears to cast variables to the correct type which makes it difficult.
Some other basics make this simple, I ...

ukandrewc

Hello GedB

I can see that your example should work but it still seems to create a copy of the string.

Ideally I need to manipulate a string in PB, passed by pointer from VB. I can pass the address of a string.

If I use memory functions, then I can confirm that it is the same string, but any ...

ukandrewc

OK, thanks GedB

I am familiar with ASM but it's things like the ! in front of assembler commands that don't seem to be documented

Andrew

ukandrewc

Thanks for that, I'll have a play.

Where is all this stuff documented?

Andrew

ukandrewc

Hello

Unfortunately I get an 'undefined variable' error when compiling the example, any help would be appreciated.

ukandrewc

Thanks wilbert, I'll play with that.

I want to be able to pass a pointer to a string from VB and manipulate it in PB.

The actual code would be more like:

Code: Select all

ProcedureDLL ManipulateString(PtrString.l)
a$=""
! pushd [v_PtrString] 
! popd [v_a$]

Thanks again

ukandrewc

Maybe I was a little premature. PeekS creates a new string, I am after a way to get a string variable for the same string.
e.g.

Code: Select all

b$=PeekS(PtrString)
;Creates a new string

;I need something like
b$=""
;Then point b$ at PtrString

Thanks

ukandrewc

Excellent, thanks num3

PB does seem to be a powerful language but it does take some time to know.

Thanks again

Andrew

ukandrewc

Hello

I was wondering how to get a pointer to a string into a string variable so that I can use string functions on it e.g.

Code: Select all

Procedure AmendString(PtrToString.l)

;I appreciate this isn't valid but how do you assign pointer to string

String.s=PtrToString

Many thanks

ukandrewc

FYI

I discovered that there is a command for my problem, CopyMemoryString is documented in the help file

Thanks again

ukandrewc

Yes, after the advice I have written my own mid function that uses pointers.

Thanks again everyone

ukandrewc

Thanks wilbert, that is a great help.

I mainly use PB for creating faster routines to call from VB.

I hadn't realised about the string limit - probably because I tend to pass strings from VB.

ukandrewc

This is the VB code
test = Space$(100010)
Mid$(test, 100000, 10) = "hello mum!"
TestString test
This is the PB code:
ProcedureDLL TestString(Test.s)
MessageRequester(Str(Len(Test)),Mid(Test,100000,10))
EndProcedure
It works - but if you say it can't, then I will use it but pretend that it doesn ...

ukandrewc

Thanks for the info wilbert.

I assume that you mean the working buffer space? If so how do you increase it?

I have used the following:

Code: Select all

ProcedureDLL.l SortString(Str.s)
x$=mid(Str,300000,10)
debug x$

Which is fine for my needs as I am only need to find strings of <100 characters.

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