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Shared Function CoInitialize(pvReserved As IntPtr) As Integer
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An IntPtr is a pointer to a memory location (unmanaged) that adapts to the platform it is running on (64-bit, etc.) UNLIKE a standard int/Integer. You should always use this type for unmanaged calls that require it, even though an int will appear to work on your development machine.
1/13/2008 11:00:13 AM - tsahi-18.104.22.168
CoInitializeEx initializes the COM library for use by the calling thread, sets the thread's concurrency model, and creates a new apartment for the thread if one is required. Values for the dwCoInit parameter are taken from the COINIT enumeration. However, since pinvoke is a dotNET construct you should be aware that dotNET already does a COM initialization and therefore calling a CoInitializeEx function most likely will not do what you expect. This problem occurs when trying to instantiate a COM object from within dotNET where the COM objects threading model is different from dotNETs. Search on Common Language Runtime or CLR and COINIT_APARTMENTTHREADED to find posts on this issue.
11/15/2010 2:34:12 AM - -22.214.171.124
Initializes the COM library on the current thread and identifies the concurrency model as single-thread apartment (STA).
10/3/2008 1:49:52 PM - -126.96.36.199
The mechanism provided by the CLR that enables managed code to call static DLL exports.
3/16/2007 1:47:32 PM - -188.8.131.52
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