private void LoadSources()
{
var sources = twain.GetSourceList();
try
{
string[] sourceStrings = new string[sources.Count];
for (int i = 0; i < sourceStrings.Length; i++)
{
if (i == twain.DefaultSourceIndex)
{
sourceStrings[i] = "Default:" + sources[i] + "\0";
}
else
{
sourceStrings[i] = sources[i] + "\0";
}
}
int bufferSize = GetBufferLength(sourceStrings);
IntPtr buffer = Marshal.AllocHGlobal(bufferSize);
try
{
int offset = 0;
Marshal.WriteInt32(buffer, sourceStrings.Length);
offset += 4;
Encoding unicode = Encoding.Unicode;
for (int i = 0; i < sourceStrings.Length; i++)
{
byte[] bytes = unicode.GetBytes(sourceStrings[i]);
Marshal.WriteInt32(buffer, offset, bytes.Length);
offset += 4;
Marshal.Copy(bytes, 0, new IntPtr(buffer.ToInt64() + (long)offset), bytes.Length);
offset += bytes.Length;
}
NativeStructs.COPYDATASTRUCT cds = new NativeStructs.COPYDATASTRUCT();
cds.cbData = bufferSize;
cds.lpData = buffer;
SafeNativeMethods.SendCopyData(ClientHWnd, NativeConstants.WM_COPYDATA, this.Handle, ref cds);
}
finally
{
Marshal.FreeHGlobal(buffer);
buffer = IntPtr.Zero;
}
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
internal static extern IntPtr SendCopyData([In()] IntPtr hWnd, [In()] uint Msg, [In()] IntPtr wParam, [In()] ref NativeStructs.COPYDATASTRUCT cds);