bool UnsafeNativeMethods.IMsoComponentManager.FUpdateComponentRegistration(IntPtr dwComponentID, NativeMethods.MSOCRINFOSTRUCT info)
{
if (_original == null)
{
return(false);
}
// We assume that all winforms domains use the same registration.
return(_original.FUpdateComponentRegistration(_componentId, info));
}
bool UnsafeNativeMethods.IMsoComponentManager.FGetActiveComponent(int dwgac, UnsafeNativeMethods.IMsoComponent[] ppic, NativeMethods.MSOCRINFOSTRUCT info, int dwReserved)
{
if (_original == null)
{
return(false);
}
if (_original.FGetActiveComponent(dwgac, ppic, info, dwReserved))
{
// We got a component. See if it's our proxy, and if it is,
// return what we think is currently active. We need only
// check for "this", because we only have one of these
// doo jabbers per process.
if (ppic[0] == this)
{
if (dwgac == NativeMethods.MSOCM.msogacActive)
{
ppic[0] = _activeComponent;
}
else if (dwgac == NativeMethods.MSOCM.msogacTracking)
{
ppic[0] = _trackingComponent;
}
else if (dwgac == NativeMethods.MSOCM.msogacTrackingOrActive)
{
if (_trackingComponent != null)
{
ppic[0] = _trackingComponent;
}
}
}
return(ppic[0] != null);
}
else
{
return(false);
}
}
bool UnsafeNativeMethods.IMsoComponentManager.FRegisterComponent(UnsafeNativeMethods.IMsoComponent component, NativeMethods.MSOCRINFOSTRUCT pcrinfo, out IntPtr dwComponentID)
{
if (component == null)
{
throw new ArgumentNullException(nameof(component));
}
dwComponentID = (IntPtr)0;
if (_refCount == 0)
{
// Our first time hooking up to the real component manager
if (!_original.FRegisterComponent(this, pcrinfo, out _componentId))
{
return(false);
}
}
_refCount++;
if (_components == null)
{
_components = new Dictionary <int, UnsafeNativeMethods.IMsoComponent>();
}
_nextComponentId++;
if (_nextComponentId == int.MaxValue)
{
_nextComponentId = 1;
}
bool outofMemory = false;
//just in case we wrap, lets search for a free ID
while (_components.ContainsKey(_nextComponentId))
{
_nextComponentId++;
if (_nextComponentId == int.MaxValue)
{
if (outofMemory)
{
throw new InvalidOperationException(SR.ComponentManagerProxyOutOfMemory);
}
outofMemory = true;
_nextComponentId = 1;
}
}
_components.Add(_nextComponentId, component);
dwComponentID = (IntPtr)_nextComponentId;
return(true);
}
