/// <summary> /// Set up all the Wintab and Wintab extension properties. /// </summary> /// <returns></returns> private bool InitWintab() { bool status = false; try { mLogContext = CWintabInfo.GetDefaultDigitizingContext(ECTXOptionValues.CXO_MESSAGES); if (mLogContext == null) { return(false); //throw new Exception("Oops - FAILED GetDefaultDigitizingContext"); } // Control system cursor. mLogContext.Options |= (UInt32)ECTXOptionValues.CXO_SYSTEM; // Verify which extensions are available for targeting. // Once we know what the tablet supports, we can set up the data packet // definition to be sent events from those control types. // All tablets should have at least expresskeys. mExpKeysMask = CWintabExtensions.GetWTExtensionMask(EWTXExtensionTag.WTX_EXPKEYS2); if (mExpKeysMask > 0) { mLogContext.PktData |= (WTPKT)mExpKeysMask; } else { Debug.WriteLine("InitWintab: WTX_EXPKEYS2 mask not found!"); throw new Exception("Oops - FAILED GetWTExtensionMask for WTX_EXPKEYS2"); } // It's not an error if either / both of these are zero. It simply means // that those control types are not supported. mTouchRingMask = CWintabExtensions.GetWTExtensionMask(EWTXExtensionTag.WTX_TOUCHRING); if (mTouchRingMask > 0) { mLogContext.PktData |= (WTPKT)mTouchRingMask; } mTouchStripMask = CWintabExtensions.GetWTExtensionMask(EWTXExtensionTag.WTX_TOUCHSTRIP); if (mTouchStripMask > 0) { mLogContext.PktData |= (WTPKT)mTouchStripMask; } status = mLogContext.Open(); if (!status) { //throw new Exception("Oops - failed logContext.Open()"); return(false); } // Query for tablet list mTabletList = CWintabInfo.GetFoundDevicesIndexList(); if (mTabletList.Count == 0) { MessageBox.Show("There are no attached tablets."); } // Create a data object and set its WT_PACKET handler. m_wtData = new CWintabData(mLogContext); m_wtData.SetWTPacketEventHandler(MyWTPacketEventHandler); foreach (var tabletIdx in mTabletList) { SetupControlsForTablet(tabletIdx); } } catch (Exception ex) { MessageBox.Show("FormExtTestApp: InitWintab: " + ex.ToString()); } return(true); }