unsafe HRESULT IOleClientSite.ShowObject()
{
Debug.WriteLineIf(AxHTraceSwitch.TraceVerbose, "in ShowObject");
if (host.GetAxState(AxHost.fOwnWindow))
{
Debug.Fail("we can't be in showobject if we own our window...");
return(HRESULT.S_OK);
}
if (host.GetAxState(AxHost.fFakingWindow))
{
// we really should not be here...
// this means that the ctl inplace deactivated and didn't call on inplace activate before calling showobject
// so we need to destroy our fake window first...
host.DestroyFakeWindow();
// The fact that we have a fake window means that the OCX inplace deactivated when we hid it. It means
// that we have to bring it back from RUNNING to INPLACE so that it can re-create its handle properly.
//
host.TransitionDownTo(OC_LOADED);
host.TransitionUpTo(OC_INPLACE);
}
if (host.GetOcState() < OC_INPLACE)
{
return(HRESULT.S_OK);
}
IntPtr hwnd = IntPtr.Zero;
if (host.GetInPlaceObject().GetWindow(&hwnd).Succeeded())
{
if (host.GetHandleNoCreate() != hwnd)
{
host.DetachWindow();
if (hwnd != IntPtr.Zero)
{
host.AttachWindow(hwnd);
}
}
}
else if (host.GetInPlaceObject() is IOleInPlaceObjectWindowless)
{
Debug.WriteLineIf(AxHTraceSwitch.TraceVerbose, "Windowless control.");
throw new InvalidOperationException(SR.AXWindowlessControl);
}
return(HRESULT.S_OK);
}
