HumidiProbeGetUnitInfo

 
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Wazzer
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Joined: 20 Dec 2006
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PostPosted: Thu Jun 14, 2007 4:38 pm    Post subject: HumidiProbeGetUnitInfo Reply with quote
Hi,
I am trying to use HumidiProbeGetUnitInfo to distinguish which of numerous probes I am reading (in VB6)

I get the temp and humidity fine but on
ok = HumidiProbeGetUnitInfo(handle, probeinfo, 255, 4)

where handle (int) like 1 and probeinfo is a string variable

program crashes with
Unhandled exception at 0x77124cb4 in VB6.EXE: 0xC0000005: Access violation reading location 0x36524e45.

Any ideas?
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Wazzer
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Joined: 20 Dec 2006
Posts: 3

PostPosted: Thu Jun 14, 2007 5:42 pm    Post subject: Reply with quote
I have found the issue. The string to recieve the deviceinfo needed to be initialised first as it not called byVal. So set probeinfo = " " first then I am OK.
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