/// <summary>
/// Returns a 3-element array describing the tablet's rotation range and resolution capabilities
/// </summary>
/// <returns></returns>
public static WintabAxisArray GetDeviceRotation(out bool rotationSupported_O)
{
WintabAxisArray axisArray = new WintabAxisArray();
rotationSupported_O = false;
IntPtr buf = CMemUtils.AllocUnmanagedBuf(axisArray);
try
{
int size = (int)CWintabFuncs.WTInfoA(
(uint)EWTICategoryIndex.WTI_DEVICES,
(uint)EWTIDevicesIndex.DVC_ROTATION, buf);
// If size == 0, then returns a zeroed struct.
axisArray = CMemUtils.MarshalUnmanagedBuf <WintabAxisArray>(buf, size);
rotationSupported_O = (axisArray.array[0].axResolution != 0 && axisArray.array[1].axResolution != 0);
}
catch (Exception ex)
{
MessageBox.Show("FAILED GetDeviceRotation: " + ex.ToString());
}
CMemUtils.FreeUnmanagedBuf(buf);
return(axisArray);
}
/// <summary>
/// Returns a list of indecies of previous or currently attached devices.
/// It is up to the caller to use the list to determine which devices are
/// actually physically device by responding to data events for those devices.
/// Devices that are not physically attached will, of course, never send
/// a data event.
/// </summary>
/// <returns></returns>
public static List <Byte> GetFoundDevicesIndexList()
{
List <Byte> list = new List <Byte>();
try
{
WintabLogContext ctx = new WintabLogContext();
IntPtr buf = CMemUtils.AllocUnmanagedBuf(ctx);
for (Int32 idx = 0; idx < MAX_NUM_ATTACHED_TABLETS; idx++)
{
int size = (int)CWintabFuncs.WTInfoA(
(UInt32)(EWTICategoryIndex.WTI_DDCTXS + idx), 0, buf);
if (size == 0)
{
break;
}
else
{
list.Add((Byte)idx);
}
}
CMemUtils.FreeUnmanagedBuf(buf);
}
catch (Exception ex)
{
MessageBox.Show("FAILED GetNumberOfConfiguredDevices: " + ex.ToString());
}
return(list);
}
/// <summary>
/// Return the extension mask for the given tag.
/// </summary>
/// <param name="tag_I">type of extension being searched for</param>
/// <returns>0xFFFFFFFF on error</returns>
public static UInt32 GetWTExtensionMask(EWTXExtensionTag tag_I)
{
UInt32 extMask = 0;
IntPtr buf = CMemUtils.AllocUnmanagedBuf(extMask);
try
{
UInt32 extIndex = FindWTExtensionIndex(tag_I);
// Supported if extIndex != -1
if (extIndex != 0xFFFFFFFF)
{
int size = (int)CWintabFuncs.WTInfoA(
(uint)EWTICategoryIndex.WTI_EXTENSIONS + (uint)extIndex,
(uint)EWTIExtensionIndex.EXT_MASK, buf);
extMask = (UInt32)CMemUtils.MarshalUnmanagedBuf <UInt32>(buf, size);
}
}
catch (Exception ex)
{
MessageBox.Show("FAILED GetWTExtensionMask: " + ex.ToString());
}
CMemUtils.FreeUnmanagedBuf(buf);
return(extMask);
}
/// <summary>
/// Returns extension index tag for given tag, if possible.
/// </summary>
/// <param name="tag_I">type of extension being searched for</param>
/// <returns>0xFFFFFFFF on error</returns>
public static UInt32 FindWTExtensionIndex(EWTXExtensionTag tag_I)
{
UInt32 thisTag = 0;
UInt32 extIndex = 0xFFFFFFFF;
IntPtr buf = CMemUtils.AllocUnmanagedBuf(thisTag);
for (Int32 loopIdx = 0, size = -1; size != 0; loopIdx++)
{
size = (int)CWintabFuncs.WTInfoA(
(uint)EWTICategoryIndex.WTI_EXTENSIONS + (UInt32)loopIdx,
(uint)EWTIExtensionIndex.EXT_TAG, buf);
if (size > 0)
{
thisTag = CMemUtils.MarshalUnmanagedBuf <UInt32>(buf, size);
if ((EWTXExtensionTag)thisTag == tag_I)
{
extIndex = (UInt32)loopIdx;
break;
}
}
}
CMemUtils.FreeUnmanagedBuf(buf);
return(extIndex);
}
/// <summary>
/// Return max normal pressure supported by tablet.
/// </summary>
/// <param name="getNormalPressure_I">TRUE=> normal pressure;
/// FALSE=> tangential pressure (not supported on all tablets)</param>
/// <returns>maximum pressure value or zero on error</returns>
public static Int32 GetMaxPressure(bool getNormalPressure_I = true)
{
WintabAxis pressureAxis = new WintabAxis();
IntPtr buf = CMemUtils.AllocUnmanagedBuf(pressureAxis);
EWTIDevicesIndex devIdx = (getNormalPressure_I ?
EWTIDevicesIndex.DVC_NPRESSURE : EWTIDevicesIndex.DVC_TPRESSURE);
try
{
int size = (int)CWintabFuncs.WTInfoA(
(uint)EWTICategoryIndex.WTI_DEVICES,
(uint)devIdx, buf);
pressureAxis = CMemUtils.MarshalUnmanagedBuf <WintabAxis>(buf, size);
}
catch (Exception ex)
{
MessageBox.Show("FAILED GetMaxPressure: " + ex.ToString());
}
CMemUtils.FreeUnmanagedBuf(buf);
return(pressureAxis.axMax);
}
/// <summary>
/// Returns a string containing the name of the selected stylus.
/// </summary>
/// <param name="index_I">indicates stylus type</param>
/// <returns></returns>
public static string GetStylusName(EWTICursorNameIndex index_I)
{
string stylusName = null;
IntPtr buf = CMemUtils.AllocUnmanagedBuf(MAX_STRING_SIZE);
try
{
int size = (int)CWintabFuncs.WTInfoA(
(uint)index_I,
(uint)EWTICursorsIndex.CSR_NAME, buf);
if (size < 1)
{
throw new Exception("GetStylusName returned empty string.");
}
// Strip off final null character before marshalling.
stylusName = CMemUtils.MarshalUnmanagedString(buf, size - 1);
}
catch (Exception ex)
{
MessageBox.Show("FAILED GetDeviceInfo: " + ex.ToString());
}
CMemUtils.FreeUnmanagedBuf(buf);
return(stylusName);
}
/// <summary>
/// Returns one packet of Wintab data from the packet queue.
/// </summary>
/// <param name="hCtx_I">Wintab context to be used when asking for the data</param>
/// <param name="pktID_I">Identifier for the tablet event packet to return.</param>
/// <returns>Returns a data packet with non-null context if successful.</returns>
public WintabPacket GetDataPacket(HCTX hCtx_I, UInt32 pktID_I)
{
IntPtr buf = CMemUtils.AllocUnmanagedBuf(Marshal.SizeOf(typeof(WintabPacket)));
WintabPacket packet = new WintabPacket();
if (pktID_I == 0)
{
throw new Exception("GetDataPacket - invalid pktID");
}
CheckForValidHCTX("GetDataPacket");
if (CWintabFuncs.WTPacket(hCtx_I, pktID_I, buf))
{
packet = (WintabPacket)Marshal.PtrToStructure(buf, typeof(WintabPacket));
}
else
{
//
// If fails, make sure context is zero.
//
packet.pkContext = HCTX.Zero;
}
CMemUtils.FreeUnmanagedBuf(buf);
return(packet);
}
/// <summary>
/// Returns a string containing device name.
/// </summary>
/// <returns></returns>
public static String GetDeviceInfo()
{
string devInfo = null;
IntPtr buf = CMemUtils.AllocUnmanagedBuf(MAX_STRING_SIZE);
try
{
int size = (int)CWintabFuncs.WTInfoA(
(uint)EWTICategoryIndex.WTI_DEVICES,
(uint)EWTIDevicesIndex.DVC_NAME, buf);
if (size < 1)
{
throw new Exception("GetDeviceInfo returned empty string.");
}
// Strip off final null character before marshalling.
devInfo = CMemUtils.MarshalUnmanagedString(buf, size - 1);
}
catch (Exception ex)
{
MessageBox.Show("FAILED GetDeviceInfo: " + ex.ToString());
}
CMemUtils.FreeUnmanagedBuf(buf);
return(devInfo);
}
/// <summary>
/// Returns one packet of Wintab data from the packet queue.
/// </summary>
/// <param name="hCtx_I">Wintab context to be used when asking for the data</param>
/// <param name="pktID_I">Identifier for the tablet event packet to return.</param>
/// <returns>Returns a data packet with non-null context if successful.</returns>
public WintabPacket GetDataPacket(UInt32 hCtx_I, UInt32 pktID_I)
{
IntPtr buf = CMemUtils.AllocUnmanagedBuf(Marshal.SizeOf(typeof(WintabPacket)));
WintabPacket packet = new WintabPacket();
if (pktID_I == 0)
{
throw new Exception("GetDataPacket - invalid pktID");
}
CheckForValidHCTX("GetDataPacket");
if (CWintabFuncs.WTPacket(hCtx_I, pktID_I, buf))
{
packet = (WintabPacket)Marshal.PtrToStructure(buf, typeof(WintabPacket));
}
else
{
//
// If fails, make sure context is zero.
//
packet.pkContext = 0;
}
/**
* PERFORMANCE FIX: without this line, the memory consume of .NET apps increase
* exponentially when the PEN is used for long time (or worse when the pen is leaved alone on the tablet screen)
* causing the app to crash now or later...
* Author: Alessandro del Gobbo ([email protected])
*/
CMemUtils.FreeUnmanagedBuf(buf);
return(packet);
}
/// <summary>
/// Returns a string containing the name of the selected stylus.
/// </summary>
/// <param name="index_I">indicates stylus type</param>
/// <returns></returns>
public static string GetStylusName(EWTICursorNameIndex index_I)
{
string stylusName = null;
IntPtr buf = CMemUtils.AllocUnmanagedBuf(MAX_STRING_SIZE);
try
{
int size = (int)CWintabFuncs.WTInfo(
(uint)index_I,
(uint)EWTICursorsIndex.CSR_NAME, buf);
if (size < 1)
{
throw new Exception("GetStylusName returned empty string.");
}
// Strip off final null character before marshalling.
stylusName = CMemUtils.MarshalUnmanagedString(buf, size - 2);
}
finally
{
CMemUtils.FreeUnmanagedBuf(buf);
}
return(stylusName);
}
/// <summary>
/// Return the number of tablets that have at some time been attached.
/// A record of these devices is in the tablet settings. Since there
/// is no direct query for this value, we have to enumerate all of
/// the tablet settings.
/// </summary>
/// <returns>tablet count</returns>
public static UInt32 GetNumberOfConfiguredDevices()
{
UInt32 numConfiguredTablets = 0;
try
{
WintabLogContext ctx = new WintabLogContext();
IntPtr buf = CMemUtils.AllocUnmanagedBuf(ctx);
for (Int32 idx = 0; idx < MAX_NUM_ATTACHED_TABLETS; idx++)
{
int size = (int)CWintabFuncs.WTInfoA(
(UInt32)(EWTICategoryIndex.WTI_DDCTXS + idx), 0, buf);
if (size == 0)
{
break;
}
else
{
numConfiguredTablets++;
}
}
CMemUtils.FreeUnmanagedBuf(buf);
}
catch (Exception ex)
{
MessageBox.Show("FAILED GetNumberOfConfiguredDevices: " + ex.ToString());
}
return(numConfiguredTablets);
}
/// <summary>
/// Return the extension mask for the given tag.
/// </summary>
/// <param name="tag_I">type of extension being searched for</param>
/// <returns>0xFFFFFFFF on error</returns>
public static UInt32 GetWTExtensionMask(EWTXExtensionTag tag_I)
{
UInt32 extMask = 0;
IntPtr buf = CMemUtils.AllocUnmanagedBuf(extMask);
try
{
UInt32 extIndex = FindWTExtensionIndex(tag_I);
// Supported if extIndex != -1
if (extIndex != 0xFFFFFFFF)
{
int size = (int)CWintabFuncs.WTInfo(
(uint)EWTICategoryIndex.WTI_EXTENSIONS + (uint)extIndex,
(uint)EWTIExtensionIndex.EXT_MASK, buf);
extMask = (UInt32)CMemUtils.MarshalUnmanagedBuf <UInt32>(buf, size);
}
}
finally
{
CMemUtils.FreeUnmanagedBuf(buf);
}
return(extMask);
}
/// <summary>
/// Get packet queue size for this data object's context.
/// </summary>
/// <returns>Returns a packet queue size in #packets or 0 if fails</returns>
public UInt32 GetPacketQueueSize()
{
UInt32 numPkts = 0;
CheckForValidHCTX("GetPacketQueueSize");
numPkts = CWintabFuncs.WTQueueSizeGet(m_context.HCtx);
return(numPkts);
}
/// <summary>
/// Set packet queue size for this data object's context.
/// </summary>
/// <param name="numPkts_I">desired #packets in queue</param>
/// <returns>Returns true if operation successful</returns>
public bool SetPacketQueueSize(UInt32 numPkts_I)
{
bool status = false;
CheckForValidHCTX("SetPacketQueueSize");
status = CWintabFuncs.WTQueueSizeSet(m_context.HCtx, numPkts_I);
return(status);
}
/// <summary>
/// Returns TRUE if Wintab service is running and responsive.
/// </summary>
/// <returns></returns>
public static bool IsWintabAvailable()
{
IntPtr buf = IntPtr.Zero;
bool status = false;
status = (CWintabFuncs.WTInfo(0, 0, buf) > 0);
return(status);
}
/// <summary>
/// Sets an extension control property image (if supported by tablet).
/// </summary>
/// <param name="context_I">wintab context</param>
/// <param name="extTagIndex_I">which extension tag we're setting</param>
/// <param name="tabletIndex_I">index of the tablet being set</param>
/// <param name="controlIndex_I">the index of the control being set</param>
/// <param name="functionIndex_I">the index of the control function being set</param>
/// <param name="propertyID_I">ID of the property being set</param>
/// <param name="value_I">value of the property being set (a string)</param>
/// <returns>true if successful</returns>
public static bool ControlPropertySetImage(
HCTX context_I,
byte extTagIndex_I,
byte tabletIndex_I,
byte controlIndex_I,
byte functionIndex_I,
ushort propertyID_I,
String imageFilePath_I
)
{
bool retStatus = false;
WTExtensionImageProperty extProperty = new WTExtensionImageProperty();
IntPtr buf = CMemUtils.AllocUnmanagedBuf(extProperty);
try
{
byte[] imageBytes = null;
System.Drawing.Image newImage = Image.FromFile(imageFilePath_I);
if (newImage == null)
{
MessageBox.Show("Oops - couldn't find/read image: " + imageFilePath_I);
return(false);
}
using (MemoryStream ms = new MemoryStream())
{
newImage.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
imageBytes = ms.ToArray();
}
extProperty.extBase.version = 0;
extProperty.extBase.tabletIndex = tabletIndex_I;
extProperty.extBase.controlIndex = controlIndex_I;
extProperty.extBase.functionIndex = functionIndex_I;
extProperty.extBase.propertyID = propertyID_I;
extProperty.extBase.reserved = 0;
extProperty.extBase.dataSize = (uint)imageBytes.Length;
extProperty.data = new byte[WTExtensionsGlobal.WTExtensionPropertyImageMaxDataBytes];
// Send image as an array of bytes.
System.Buffer.BlockCopy(imageBytes, 0, extProperty.data, 0, (int)extProperty.extBase.dataSize);
Marshal.StructureToPtr(extProperty, buf, false);
retStatus = CWintabFuncs.WTExtSet((UInt32)context_I, (UInt32)extTagIndex_I, buf);
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
CMemUtils.FreeUnmanagedBuf(buf);
return(retStatus);
}
/// <summary>
/// Open a Wintab context that will send packet events to a message window.
/// </summary>
/// <returns>Returns true if successful.</returns>
public bool Open()
{
// Get the handle of the anonymous MessageEvents window. This is a
// static (global) object, so there's only one of these at a time.
HWND hwnd = MessageEvents.WindowHandle;
m_hCTX = CWintabFuncs.WTOpen(hwnd, ref m_logContext, true);
return(m_hCTX.IsValid);
}
/// <summary>
/// Removes all pending data packets from the context's queue.
/// </summary>
public void FlushDataPackets(uint numPacketsToFlush_I)
{
try
{
CheckForValidHCTX("FlushDataPackets");
CWintabFuncs.WTPacketsGet(m_context.HCtx, numPacketsToFlush_I, IntPtr.Zero);
}
catch (Exception ex)
{
MessageBox.Show("FAILED GetPacketDataRange: " + ex.ToString());
}
}
public void BringToFront()
{
try
{
CheckForValidHCTX("BringToFront");
CWintabFuncs.WTOverlap(m_context.HCtx, true);
}
catch (Exception ex)
{
MessageBox.Show("FAILED BringToFront: " + ex.ToString());
}
}
/// <summary>
/// Enable/disable this Wintab context.
/// </summary>
/// <param name="enable_I">true = enable</param>
/// <returns>Returns true if completed successfully</returns>
public bool Enable(bool enable_I)
{
bool status = false;
if (!m_hCTX.IsValid)
{
throw new Exception("EnableContext: invalid context");
}
status = CWintabFuncs.WTEnable(m_hCTX, enable_I);
return(status);
}
/// <summary>
/// Sends a tablet context to the top or bottom of the order of overlapping tablet contexts
/// </summary>
/// <param name="toTop_I">true = send tablet to top of order</param>
/// <returns>Returns true if successsful</returns>
public bool SetOverlapOrder(bool toTop_I)
{
bool status = false;
if (!m_hCTX.IsValid)
{
throw new Exception("EnableContext: invalid context");
}
status = CWintabFuncs.WTOverlap(m_hCTX, toTop_I);
return(status);
}
/// <summary>
/// Open a Wintab context to the specified hwnd.
/// </summary>
/// <param name="hwnd_I">parent window for the context</param>
/// <param name="enable_I">true to enable, false to disable</param>
/// <returns>Returns non-zero context handle if successful.</returns>
public HCTX Open(HWND hwnd_I, bool enable_I)
{
try
{
m_hCTX = CWintabFuncs.WTOpenA(hwnd_I, ref m_logContext, enable_I);
}
catch (Exception ex)
{
MessageBox.Show("FAILED OpenContext: " + ex.ToString());
}
return(m_hCTX);
}
/// <summary>
/// Close the context for this object.
/// </summary>
/// <returns>true if context successfully closed</returns>
public bool Close()
{
bool status = false;
if (!m_hCTX.IsValid)
{
throw new Exception("CloseContext: invalid context");
}
status = CWintabFuncs.WTClose(m_hCTX);
m_hCTX = HCTX.Zero;
m_logContext = new WintabLogContext();
return(status);
}
/// <summary>
/// Get packet queue size for this data object's context.
/// </summary>
/// <returns>Returns a packet queue size in #packets or 0 if fails</returns>
public UInt32 GetPacketQueueSize()
{
UInt32 numPkts = 0;
try
{
CheckForValidHCTX("GetPacketQueueSize");
numPkts = CWintabFuncs.WTQueueSizeGet(m_context.HCtx);
}
catch (Exception ex)
{
MessageBox.Show("FAILED GetPacketQueueSize: " + ex.ToString());
}
return(numPkts);
}
/// <summary>
/// Set packet queue size for this data object's context.
/// </summary>
/// <param name="numPkts_I">desired #packets in queue</param>
/// <returns>Returns true if operation successful</returns>
public bool SetPacketQueueSize(UInt32 numPkts_I)
{
bool status = false;
try
{
CheckForValidHCTX("SetPacketQueueSize");
status = CWintabFuncs.WTQueueSizeSet(m_context.HCtx, numPkts_I);
}
catch (Exception ex)
{
MessageBox.Show("FAILED SetPacketQueueSize: " + ex.ToString());
}
return(status);
}
/// <summary>
/// Returns TRUE if Wintab service is running and responsive.
/// </summary>
/// <returns></returns>
public static bool IsWintabAvailable()
{
IntPtr buf = IntPtr.Zero;
bool status = false;
try
{
status = (CWintabFuncs.WTInfoA(0, 0, buf) > 0);
}
catch (Exception ex)
{
MessageBox.Show("FAILED IsWintabAvailable: " + ex.ToString());
}
return(status);
}
/// <summary>
/// Open a Wintab context that will send packet events to a message window.
/// </summary>
/// <returns>Returns true if successful.</returns>
public bool Open()
{
// Get the handle of the anonymous MessageEvents window. This is a
// static (global) object, so there's only one of these at a time.
HWND hwnd = MessageEvents.WindowHandle;
try
{
m_hCTX = CWintabFuncs.WTOpenA(hwnd, ref m_logContext, true);
}
catch (Exception ex)
{
MessageBox.Show("FAILED OpenContext: " + ex.ToString());
}
return(m_hCTX > 0);
}
/// <summary>
/// Helper function to get digitizing or system default context.
/// </summary>
/// <param name="contextType_I">Use WTI_DEFCONTEXT for digital context or WTI_DEFSYSCTX for system context</param>
/// <returns>Returns the default context or null on error.</returns>
private static CWintabContext GetDefaultContext(EWTICategoryIndex contextIndex_I)
{
CWintabContext context = new CWintabContext();
IntPtr buf = CMemUtils.AllocUnmanagedBuf(context.LogContext);
try
{
int size = (int)CWintabFuncs.WTInfo((uint)contextIndex_I, 0, buf);
context.LogContext = CMemUtils.MarshalUnmanagedBuf <WintabLogContext>(buf, size);
}
finally
{
CMemUtils.FreeUnmanagedBuf(buf);
}
return(context);
}
/// <summary>
/// Get a property value from an extension.
/// </summary>
/// <param name="context_I">Wintab context</param>
/// <param name="extTagIndex_I">extension index tag</param>
/// <param name="tabletIndex_I">tablet index</param>
/// <param name="controlIndex_I">control index on the tablet</param>
/// <param name="functionIndex_I">function index on the control</param>
/// <param name="propertyID_I">ID of the property requested</param>
/// <param name="result_O">value of the property requested</param>
/// <returns>true if property obtained</returns>
public static bool ControlPropertyGet(
HCTX context_I,
byte extTagIndex_I,
byte tabletIndex_I,
byte controlIndex_I,
byte functionIndex_I,
ushort propertyID_I,
ref UInt32 result_O
)
{
bool retStatus = false;
WTExtensionProperty extProperty = new WTExtensionProperty();
IntPtr buf = CMemUtils.AllocUnmanagedBuf(extProperty);
extProperty.extBase.version = 0;
extProperty.extBase.tabletIndex = tabletIndex_I;
extProperty.extBase.controlIndex = controlIndex_I;
extProperty.extBase.functionIndex = functionIndex_I;
extProperty.extBase.propertyID = propertyID_I;
extProperty.extBase.reserved = 0;
extProperty.extBase.dataSize = (uint)System.Runtime.InteropServices.Marshal.SizeOf(result_O);
Marshal.StructureToPtr(extProperty, buf, false);
try
{
bool status = CWintabFuncs.WTExtGet((UInt32)context_I, (UInt32)extTagIndex_I, buf);
if (status)
{
WTExtensionProperty retProp = (WTExtensionProperty)Marshal.PtrToStructure(buf, typeof(WTExtensionProperty));
result_O = retProp.data[0];
retStatus = true;
}
}
catch (Exception ex)
{
MessageBox.Show("FAILED ControlPropertyGet: " + ex.ToString());
}
CMemUtils.FreeUnmanagedBuf(buf);
return(retStatus);
}
/// <summary>
/// Sets an extension control property string.
/// </summary>
/// <param name="context_I">wintab context</param>
/// <param name="extTagIndex_I">which extension tag we're setting</param>
/// <param name="tabletIndex_I">index of the tablet being set</param>
/// <param name="controlIndex_I">the index of the control being set</param>
/// <param name="functionIndex_I">the index of the control function being set</param>
/// <param name="propertyID_I">ID of the property being set</param>
/// <param name="value_I">value of the property being set (a string)</param>
/// <returns>true if successful</returns>
public static bool ControlPropertySet(
HCTX context_I,
byte extTagIndex_I,
byte tabletIndex_I,
byte controlIndex_I,
byte functionIndex_I,
ushort propertyID_I,
String value_I
)
{
bool retStatus = false;
WTExtensionProperty extProperty = new WTExtensionProperty();
IntPtr buf = CMemUtils.AllocUnmanagedBuf(extProperty);
try
{
// Convert unicode string value_I to UTF8-encoded bytes
byte[] utf8Bytes = System.Text.Encoding.Convert(Encoding.Unicode, Encoding.UTF8, Encoding.Unicode.GetBytes(value_I));
extProperty.extBase.version = 0;
extProperty.extBase.tabletIndex = tabletIndex_I;
extProperty.extBase.controlIndex = controlIndex_I;
extProperty.extBase.functionIndex = functionIndex_I;
extProperty.extBase.propertyID = propertyID_I;
extProperty.extBase.reserved = 0;
extProperty.extBase.dataSize = (uint)utf8Bytes.Length;
extProperty.data = new byte[WTExtensionsGlobal.WTExtensionPropertyMaxDataBytes];
// Send input value as an array of UTF8-encoded bytes.
System.Buffer.BlockCopy(utf8Bytes, 0, extProperty.data, 0, (int)extProperty.extBase.dataSize);
Marshal.StructureToPtr(extProperty, buf, false);
retStatus = CWintabFuncs.WTExtSet((UInt32)context_I, (UInt32)extTagIndex_I, buf);
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
CMemUtils.FreeUnmanagedBuf(buf);
return(retStatus);
}