public virtual void GetOleVerbs(DesignerVerbCollection rval)
{
NativeMethods.IEnumOLEVERB verbEnum = null;
NativeMethods.IOleObject obj = axHost.GetOcx() as NativeMethods.IOleObject;
if (obj == null || NativeMethods.Failed(obj.EnumVerbs(out verbEnum)))
{
return;
}
Debug.Assert(verbEnum != null, "must have return value");
if (verbEnum == null)
{
return;
}
int[] fetched = new int[1];
NativeMethods.tagOLEVERB oleVerb = new NativeMethods.tagOLEVERB();
foundEdit = false;
foundAbout = false;
foundProperties = false;
while (true)
{
fetched[0] = 0;
oleVerb.lpszVerbName = null;
int hr = verbEnum.Next(1, oleVerb, fetched);
if (hr == NativeMethods.S_FALSE)
{
break;
}
else if (NativeMethods.Failed(hr))
{
Debug.Fail("Failed to enumerate through enums: " + hr.ToString());
break;
}
// Believe it or not, some controls, notably the shdocview control, dont' return
// S_FALSE and neither do they set fetched to 1. So, we need to comment out what's
// below to maintain compatibility with Visual Basic.
// if (fetched[0] != 1) {
// Debug.fail("gotta have our 1 verb...");
// break;
// }
if ((oleVerb.grfAttribs & NativeMethods.ActiveX.OLEVERBATTRIB_ONCONTAINERMENU) != 0)
{
foundEdit = foundEdit || oleVerb.lVerb == OLEIVERB_UIACTIVATE;
foundAbout = foundAbout || oleVerb.lVerb == HOSTVERB_ABOUT;
foundProperties = foundProperties || oleVerb.lVerb == HOSTVERB_PROPERTIES;
rval.Add(new HostVerb(new OleVerbData(oleVerb), handler));
}
}
}
internal OleVerbData(NativeMethods.tagOLEVERB oleVerb)
: base(SR.GetString(SR.AXVerbPrefix) + oleVerb.lpszVerbName, oleVerb.lVerb)
{
this.dirties = (oleVerb.grfAttribs & NativeMethods.ActiveX.OLEVERBATTRIB_NEVERDIRTIES) == 0;
}