public static UnsafeNativeMethods.ITypeInfo FindTypeInfo(object obj, bool wantCoClass)
{
UnsafeNativeMethods.ITypeInfo classInfo = null;
for (int i = 0; (classInfo == null) && (i < 2); i++)
{
if (wantCoClass == (i == 0))
{
if (obj is System.Windows.Forms.NativeMethods.IProvideClassInfo)
{
System.Windows.Forms.NativeMethods.IProvideClassInfo info2 = (System.Windows.Forms.NativeMethods.IProvideClassInfo)obj;
try
{
classInfo = info2.GetClassInfo();
}
catch
{
}
}
}
else if (obj is UnsafeNativeMethods.IDispatch)
{
UnsafeNativeMethods.IDispatch dispatch = (UnsafeNativeMethods.IDispatch)obj;
try
{
classInfo = dispatch.GetTypeInfo(0, SafeNativeMethods.GetThreadLCID());
}
catch
{
}
}
}
return(classInfo);
}
/// <include file='doc\COM2TypeInfoProcessor.uex' path='docs/doc[@for="Com2TypeInfoProcessor.FindTypeInfo"]/*' />
/// <devdoc>
/// Given an Object, this attempts to locate its type ifo
/// </devdoc>
public static UnsafeNativeMethods.ITypeInfo FindTypeInfo(object obj, bool wantCoClass)
{
UnsafeNativeMethods.ITypeInfo pTypeInfo = null;
// this is kind of odd. What's going on here is that
// if we want the CoClass (e.g. for the interface name),
// we need to look for IProvideClassInfo first, then
// look for the typeinfo from the IDispatch.
// In the case of many OleAut32 operations, the CoClass
// doesn't have the interface members on it, although
// in the shell it usually does, so
// we need to re-order the lookup if we _actually_ want
// the CoClass if it's available.
//
for (int i = 0; pTypeInfo == null && i < 2; i++)
{
if (wantCoClass == (i == 0))
{
if (obj is NativeMethods.IProvideClassInfo)
{
NativeMethods.IProvideClassInfo pProvideClassInfo = (NativeMethods.IProvideClassInfo)obj;
try {
pTypeInfo = pProvideClassInfo.GetClassInfo();
}
catch {
}
}
}
else
{
if (obj is UnsafeNativeMethods.IDispatch)
{
UnsafeNativeMethods.IDispatch iDispatch = (UnsafeNativeMethods.IDispatch)obj;
try {
pTypeInfo = iDispatch.GetTypeInfo(0, SafeNativeMethods.GetThreadLCID());
}
catch {
}
}
}
}
return(pTypeInfo);
}