How to get value of IntPtr

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

Hello,

I'm using the IEnumMoniker.Next method, based on an IEnumMoniker reference
I've obtained by looking up values in the running object table. The third
parameter to IEnumMoniker.Next is an IntPtr. It's supposed to return the
number of items actually returned, based on the number requested as specified
by the first parameter. My question is, how do I properly call
IEnumMoniker.Next and specify the IntPtr final parameter such that its value
is set? So far, everytime I try to get the value of the IntPtr variable it
is always 0 after the call.

Thanks,
Notre
 
Hi Notre,

You can use Marshal.AllocHGlobal to allocate the memory for the ULONG as
required by IEnumMoniker::Next, then use Marshal.ReadInt32 to read its
value.

IRunningObjectTable prot;
IEnumMoniker pMonkEnum;
GetRunningObjectTable(0,out prot);
prot.EnumRunning(out pMonkEnum);
pMonkEnum.Reset(); // Churn through enumeration.
IntPtr fetched = Marshal.AllocHGlobal(4);
IMoniker []pmon = new IMoniker[1];
while(pMonkEnum.Next(1, pmon, fetched) == 0)
{
int iFetched = Marshal.ReadInt32(fetched);
IBindCtx pCtx;
CreateBindCtx(0, out pCtx);
string str;
pmon[0].GetDisplayName(pCtx,null,out str);
}
Marshal.FreeHGlobal(fetched);


Sincerely,
Walter Wang ([email protected], remove 'online.')
Microsoft Online Community Support

==================================================
Get notification to my posts through email? Please refer to
http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif
ications. If you are using Outlook Express, please make sure you clear the
check box "Tools/Options/Read: Get 300 headers at a time" to see your reply
promptly.

Note: The MSDN Managed Newsgroup support offering is for non-urgent issues
where an initial response from the community or a Microsoft Support
Engineer within 1 business day is acceptable. Please note that each follow
up response may take approximately 2 business days as the support
professional working with you may need further investigation to reach the
most efficient resolution. The offering is not appropriate for situations
that require urgent, real-time or phone-based interactions or complex
project analysis and dump analysis issues. Issues of this nature are best
handled working with a dedicated Microsoft Support Engineer by contacting
Microsoft Customer Support Services (CSS) at
http://msdn.microsoft.com/subscriptions/support/default.aspx.
==================================================

This posting is provided "AS IS" with no warranties, and confers no rights.
 
Back
Top