IRealTimeStylus::AddStylusAsyncPlugin method (rtscom.h)

Adds an IStylusAsyncPlugin to the asynchronous plug-in collection at the specified index.

Syntax

HRESULT AddStylusAsyncPlugin(
  [in] ULONG              iIndex,
  [in] IStylusAsyncPlugin *piPlugin
);

Parameters

[in] iIndex

Specifies the index of the plug-in in the asynchronous plug-in collection.

[in] piPlugin

The plug-in to add to.

Return value

For a description of the return values, see RealTimeStylus Classes and Interfaces.

Remarks

You cannot add asynchronous plug-ins if RealTimeStylus Class object has a child RealTimeStylus Class object.

Examples

The following C++ code example adds an instance of an IStylusAsyncPlugin to a RealTimeStylus object. The example code uses the QueryInterface method on a GestureRecognizer plug-in, g_pGestureHandler, to get the IStylusAsyncPlugin interface, then calls IRealTimeStylus::AddStylusAsyncPlugin Method.

HRESULT CCOMRTSDlg::InitGestureHandler()
{
	// Create an IGestureHandler object
	HRESULT hr = CoCreateInstance(CLSID_GestureHandler, NULL, CLSCTX_INPROC, IID_IGestureHandler, (VOID **)&g_pGestureHandler);

	if (SUCCEEDED(hr))
	{
		// Get a pointer to the IStylusAsyncPlugin interface
		IStylusAsyncPlugin* pAsyncPlugin;
		hr = g_pGestureHandler->QueryInterface(IID_IStylusAsyncPlugin, reinterpret_cast<void**>(&pAsyncPlugin));
		
		if (SUCCEEDED(hr))
		{
			// Get the current count of plugins so we can
			// add this one to the end of the collection
			ULONG nAsyncPluginCount;
			hr = g_pRealTimeStylus->GetStylusAsyncPluginCount(&nAsyncPluginCount);

			if (SUCCEEDED(hr))
			{
				// Add the plugin to the StylusAsyncPlugin collection
				hr = g_pRealTimeStylus->AddStylusAsyncPlugin(nAsyncPluginCount, pAsyncPlugin);

				if (SUCCEEDED(hr))
				{
					// Pass the Gesture Handler a pointer to the 
					// status window so it can update the status
					hr = g_pGestureHandler->SetStatusWindow(&m_staticGestureStatus);
				}
			}
		}
	}
	return hr;
}

Requirements

See also

IRealTimeStylus

IStylusAsyncPlugin

IStylusSyncPlugin

RealTimeStylus Class