////////////////////////////////////////////////////////////////////////////
/// <summary>
/// Removes device of the specified ID.
/// </summary>
/// <param name="deviceID_I">Touch device identifier</param>
public void RemoveDevice(Int32 deviceID_I)
{
IntPtr devBuf = IntPtr.Zero;
try
{
if (mDeviceCapsMap.ContainsKey(deviceID_I))
{
mDeviceCapsMap.Remove(deviceID_I);
// Make sure we're in sync with system's view of #attached devices.
devBuf = CMemUtils.AllocUnmanagedBuf(mDeviceIDArray);
Marshal.StructureToPtr(mDeviceIDArray, devBuf, false);
mNumDevices = CWacomMTInterface.WacomMTGetAttachedDeviceIDs(devBuf, mMaxNumTouchDevices * sizeof(Int32));
if (mNumDevices > 0)
{
mDeviceIDArray = (WacomMTDeviceIDArray)Marshal.PtrToStructure(devBuf, typeof(WacomMTDeviceIDArray));
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
finally
{
CMemUtils.FreeUnmanagedBuf(ref devBuf);
}
}
/// <summary>
/// Find capabilities for all attached touch devices.
/// If successful, this will populate mDeviceCapsMap.
/// </summary>
/// <returns> true if all device capabilities updated</returns>
private bool UpdateDeviceCaps()
{
IntPtr devBuf = IntPtr.Zero;
try
{
if (mNumDevices > 0)
{
for (int idx = 0; idx < mNumDevices; idx++)
{
Int32 devID = mDeviceIDArray.data[idx];
WacomMTCapability devCaps = new WacomMTCapability();
devBuf = CMemUtils.AllocUnmanagedBuf(devCaps);
Marshal.StructureToPtr(devCaps, devBuf, false);
if (WacomMTError.WMTErrorSuccess == CWacomMTInterface.WacomMTGetDeviceCapabilities(devID, devBuf))
{
devCaps = (WacomMTCapability)Marshal.PtrToStructure(devBuf, typeof(WacomMTCapability));
mDeviceCapsMap[devID] = devCaps;
DumpDeviceCaps(devID);
CMemUtils.FreeUnmanagedBuf(ref devBuf);;
}
else
{
throw new Exception("Oops - failed WacomMTGetDeviceCapabilities");
}
}
return(true);
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
if (devBuf != IntPtr.Zero)
{
CMemUtils.FreeUnmanagedBuf(ref devBuf);
}
}
return(false);
}
////////////////////////////////////////////////////////////////////////////
/// <summary>
/// Adds touch device with the specified device capability to the current
/// list of attached devices.
/// </summary>
/// <param name="deviceCapability_I"></param>
public void AddDevice(WacomMTCapability deviceCapability_I)
{
IntPtr devBuf = IntPtr.Zero;
try
{
Int32 deviceID = deviceCapability_I.DeviceID;
// Only add device if not already added.
if (!mDeviceCapsMap.ContainsKey(deviceID))
{
mDeviceCapsMap[deviceID] = deviceCapability_I;
// Make sure we're in sync with system's view of #attached devices.
devBuf = CMemUtils.AllocUnmanagedBuf(mDeviceIDArray);
Marshal.StructureToPtr(mDeviceIDArray, devBuf, false);
if (mNumDevices > WacomMTConstants.MAX_NUMBER_TOUCH_DEVICES)
{
throw new Exception("Too many touch devices attached");
}
mNumDevices = CWacomMTInterface.WacomMTGetAttachedDeviceIDs(devBuf, mMaxNumTouchDevices * sizeof(Int32));
if (mNumDevices > 0)
{
mDeviceIDArray = (WacomMTDeviceIDArray)Marshal.PtrToStructure(devBuf, typeof(WacomMTDeviceIDArray));
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
finally
{
CMemUtils.FreeUnmanagedBuf(ref devBuf);
}
}
////////////////////////////////////////////////////////////////////////////
/// <summary>
/// Initialize MTAPI, find/cache connected devices
/// and their capabilities.
/// </summary>
public void Init()
{
IntPtr devBuf = IntPtr.Zero;
try
{
WacomMTError res = WacomMTError.WMTErrorSuccess;
// ----------------------------------------------------------------
// Initialize the MTAPI.
//
res = CWacomMTInterface.WacomMTInitialize(WacomMTConstants.WACOM_MULTI_TOUCH_API_VERSION);
if (WacomMTError.WMTErrorSuccess != res)
{
throw new Exception("Oops - failed WacomMTInitialize - is the tablet touch driver running?");
}
Trace.WriteLine("WacomMTDN: WacomMTInitialize successful.");
// ----------------------------------------------------------------
// Find all attached touch devices.
// If successful, this will populate mDeviceIDArray.data.
//
devBuf = CMemUtils.AllocUnmanagedBuf(mDeviceIDArray);
Marshal.StructureToPtr(mDeviceIDArray, devBuf, false);
if (mNumDevices > WacomMTConstants.MAX_NUMBER_TOUCH_DEVICES)
{
throw new Exception("Too many touch devices attached");
}
mNumDevices = CWacomMTInterface.WacomMTGetAttachedDeviceIDs(devBuf, mMaxNumTouchDevices * sizeof(Int32));
if (mNumDevices > 0)
{
mDeviceIDArray = (WacomMTDeviceIDArray)Marshal.PtrToStructure(devBuf, typeof(WacomMTDeviceIDArray));
DumpDeviceIDArray();
}
else
{
Trace.WriteLine("WacomMTDN: NO TOUCH DEVICES FOUND!");
}
CMemUtils.FreeUnmanagedBuf(ref devBuf);
// ----------------------------------------------------------------
// Find capabilities for all attached touch devices.
// If successful, this will populate mDeviceCapsMap.
//
if ((mNumDevices > 0) && !UpdateDeviceCaps())
{
throw new Exception("Oops - could not complete query for capabilities");
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
finally
{
if (devBuf != IntPtr.Zero)
{
CMemUtils.FreeUnmanagedBuf(ref devBuf);
}
}
}