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How to pass alge amount data to General type Field
Message
From
11/03/1998 10:41:29
 
 
To
11/03/1998 10:28:28
Cetin Basoz
Engineerica Inc.
Izmir, Turkey
General information
Forum:
Visual FoxPro
Category:
Coding, syntax & commands
Miscellaneous
Thread ID:
00083823
Message ID:
00083889
Views:
59
>>I have found an example In VFP Developer's Guide about
>>passing data to General type Field (MSGraph) by using string,
>>which contains data.
>>But string cant' be longer than 256.
>>It's very limited.
>>
>>Giedrius Kaleckas
>Hi Giedrius,
>For VFP 254 is Character type field limit not string limit. A VFP string can be as large as 2 Gb and command line 8192 bytes. Virtually this means you could have a 2Gb string at a command line (no macro substitution).
>
>*A sample for a form with a oleboundcontrol
>#DEFINE TAB CHR(9)
>#DEFINE CRLF CHR(13)+CHR(10)
>THIS.LockScreen = .T.
>M.CGDATA = ""
>for ix=1 to 2000
>    m.cgdata = m.cgdata+TAB+"val"+str(ix)
>endfor
>m.cgdata = m.cgdata +crlf+"Value"
>for ix=1 to 2000
>  m.cgdata = m.cgdata+TAB+str(ix)
>endfor
>wait window str(len(m.cgdata))
>create cursor foo (gen1 g)
>append blank
>append general gen1 class "msgraph.chart" DATA M.CGData
>THIS.OleBoundControl1.ControlSource = "Gen1"
>THIS.OleBoundControl1.HasLegend = .t.
>*THIS.OleBoundControl1.autoformat(14, 1)
>THIS.LockScreen = .F.
>
>The above code would produce a 50007 bytes m.cgdata (Do not run the example if you don't have a fast computer - lower the 2000 value first).
>Cetin

Excellent code! Cetin, where I can find a list of all graph properties (to modify graph on fly).
Edward Pikman
Independent Consultant
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