unsafe HRESULT IOleControlSite.GetExtendedControl(IntPtr *ppDisp)
{
Debug.WriteLineIf(AxHTraceSwitch.TraceVerbose, "in GetExtendedControl " + host.ToString());
if (ppDisp is null)
{
return(HRESULT.E_POINTER);
}
object proxy = host.GetParentContainer().GetProxyForControl(host);
if (proxy is null)
{
return(HRESULT.E_NOTIMPL);
}
*ppDisp = Marshal.GetIDispatchForObject(proxy);
return(HRESULT.S_OK);
}
HRESULT Ole32.IOleControlSite.GetExtendedControl(out object ppDisp)
{
Debug.WriteLineIf(AxHTraceSwitch.TraceVerbose, "in GetExtendedControl " + host.ToString());
ppDisp = host.GetParentContainer().GetProxyForControl(host);
if (ppDisp == null)
{
return(HRESULT.E_NOTIMPL);
}
return(HRESULT.S_OK);
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
internal void OnUIActivate(AxHost site) {
// The ShDocVw control repeatedly calls OnUIActivate() with the same
// site. This causes the assert below to fire.
//
if (siteUIActive == site)
return;
if (siteUIActive != null && siteUIActive != site) {
AxHost tempSite = siteUIActive;
bool ownDisposing = tempSite.GetAxState(AxHost.ownDisposing);
try {
tempSite.SetAxState(AxHost.ownDisposing, true);
tempSite.GetInPlaceObject().UIDeactivate();
}
finally {
tempSite.SetAxState(AxHost.ownDisposing, ownDisposing);
}
}
site.AddSelectionHandler();
Debug.Assert(siteUIActive == null, "Object did not call OnUIDeactivate");
Debug.WriteLineIf(AxHTraceSwitch.TraceVerbose, "active Object is now "+site.ToString());
siteUIActive = site;
ContainerControl f = site.ContainingControl;
Debug.Assert(f != null, "a control has to be on a ContainerControl...");
if (f != null) {
f.ActiveControl = site;
}
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
internal void ControlCreated(AxHost invoker) {
Debug.WriteLineIf(AxHTraceSwitch.TraceVerbose, "in controlCreated for "+invoker.ToString()+" fAC: "+formAlreadyCreated.ToString());
if (formAlreadyCreated) {
if (invoker.IsUserMode() && invoker.AwaitingDefreezing()) {
invoker.Freeze(false);
}
}
else {
// the form will be created in the future
parent.CreateAxContainer();
}
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
// FxCop: Currently not used
private void OnNewActiveControlInternal(AxHost value) {
Debug.WriteLineIf(AxHTraceSwitch.TraceVerbose, "New active control. siteUIActive is" +siteUIActive.ToString()+" Control is "+value.ToString());
if (siteUIActive != null && siteUIActive != value) {
Debug.Fail("we should not have an ui active site on this container!"+parent.ToString());
siteUIActive.UiDeactivate();
}
#if DEBUG
if (siteUIActive != null && siteUIActive != value) Debug.WriteLineIf(AxHTraceSwitch.TraceVerbose, "Why is "+siteUIActive.ToString()+" still active?");
if (!value.CanUIActivate) Debug.WriteLineIf(AxHTraceSwitch.TraceVerbose, "why can't "+value.ToString()+" be uiactivated?");
#endif
if (siteUIActive == null && value.CanUIActivate) {
// we need to uiactivate it ourselves...
try {
((AxHost)value).UiActivate();
}
catch (Exception e) {
Debug.Fail(e.ToString());
}
}
#if DEBUG
if (siteUIActive != parent.ActiveControl && value.CanUIActivate) {
Debug.WriteLineIf(AxHTraceSwitch.TraceVerbose, "form's active control is "+parent.ActiveControl.ToString());
Debug.WriteLineIf(AxHTraceSwitch.TraceVerbose, "could not reconcile active controls... bad things loom on the horizon...");
}
#endif
if (siteUIActive == null) {
// so now the form thinks that value is the active control but it's not ui active...
// this can often lead to bad things unless we are carefull...
siteActive = value;
// basically, when siteActive goes inplacedeactivate, we need to treat it the same as a
// siteuiactive going uiactivedeactivate...
}
}
