private static IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
if (msg == (int)EWintabEventMessage.WT_PACKET)
{
packet = WintabManager.GetPacket(lParam, (uint)wParam.ToInt32());
usingPen = true;
uint button = packet.pkButtons & 0x00000001;
if (button == 1)
{
uint highWord = (packet.pkButtons & 0xFFFF0000) >> 16;
if ((highWord & 2) != 0)
{
ButtonPressed = true;
}
else if ((highWord & 1) != 0)
{
ButtonPressed = false;
}
}
}
return(IntPtr.Zero);
}
/// <summary>
/// パケットの取得
/// </summary>
/// <param name="hCtx"></param>
/// <param name="pktID"></param>
/// <returns></returns>
public static WintabPacket GetPacket(IntPtr hCtx, UInt32 pktID)
{
WintabPacket packet = new WintabPacket();
IntPtr pPacket = WintabMemoryUtility.AllocUnmanagedBuffer(packet);
try
{
bool result = WintabFunctions.WTPacket(hCtx, pktID, pPacket);
packet = WintabMemoryUtility.MarshalUnmanagedBuffer <WintabPacket>(
pPacket,
(uint)WintabMemoryUtility.SizeOf(typeof(WintabPacket)));
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("GetPacket : " + ex.Message);
throw ex;
}
finally
{
WintabMemoryUtility.FreeUnmanagedBuffer(pPacket);
}
return(packet);
}