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QuestionHow to pass null ref type. Pin
__John_6-Dec-11 3:18
__John_6-Dec-11 3:18 
AnswerRe: How to pass null ref type. Pin
Luc Pattyn6-Dec-11 4:17
sitebuilderLuc Pattyn6-Dec-11 4:17 
AnswerRe: How to pass null ref type. Pin
BobJanova6-Dec-11 4:21
BobJanova6-Dec-11 4:21 
GeneralRe: How to pass null ref type. Pin
__John_6-Dec-11 4:36
__John_6-Dec-11 4:36 
GeneralRe: How to pass null ref type. Pin
BobJanova6-Dec-11 5:34
BobJanova6-Dec-11 5:34 
GeneralRe: How to pass null ref type. Pin
DaveyM696-Dec-11 7:07
professionalDaveyM696-Dec-11 7:07 
AnswerRe: How to pass null ref type. Pin
Richard MacCutchan6-Dec-11 5:01
mveRichard MacCutchan6-Dec-11 5:01 
GeneralRe: How to pass null ref type. Pin
DaveyM696-Dec-11 12:27
professionalDaveyM696-Dec-11 12:27 
I'm not confident on this as I obviously don't have the OPs code or API for the ActiveX, but I would guess from the info provided that it looks for null pointers, the .NET equivalent of System.IntPtr.Zero.

I've never looked into this, but doesn't a ref parameter marshal the address at which the actual value is stored, therefore passing 0.0 could pass a pointer to any valid memory address rather than a null (zero) pointer? This could be way wrong - I will research!
Dave

Binging is like googling, it just feels dirtier.
Please take your VB.NET out of our nice case sensitive forum.
Astonish us. Be exceptional. (Pete O'Hanlon)

BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)



GeneralRe: How to pass null ref type. Pin
Richard MacCutchan6-Dec-11 13:13
mveRichard MacCutchan6-Dec-11 13:13 
AnswerRe: How to pass null ref type. Pin
Peter_in_27806-Dec-11 13:04
professionalPeter_in_27806-Dec-11 13:04 
GeneralRe: How to pass null ref type. Pin
__John_7-Dec-11 4:36
__John_7-Dec-11 4:36 
QuestionMultilingual keyboard support for C# touchscreen application Pin
PetersCodeProject6-Dec-11 3:06
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QuestionRun code if event log entry is older than 12 hours - could you help Pin
CCodeNewbie6-Dec-11 0:15
CCodeNewbie6-Dec-11 0:15 
AnswerRe: Run code if event log entry is older than 12 hours - could you help Pin
Eddy Vluggen6-Dec-11 8:07
professionalEddy Vluggen6-Dec-11 8:07 
QuestionLinq operation [Grouping and Sum] Pin
nitin_ion5-Dec-11 23:16
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OriginalGriff6-Dec-11 1:20
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QuestionOpenDialogFile Issue Pin
PDTUM5-Dec-11 7:42
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QuestionDrawing wave forms from Wave files Pin
Federico Paolillo5-Dec-11 4:45
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