private int AddSysexBuffer()
{
int result = -1;
int shdr = Marshal.SizeOf(typeof(MidiHeader));
IntPtr nhdr = Marshal.AllocHGlobal(shdr);
header = new MidiHeader();
header.bufferLength = header.bytesRecorded = 128;
header.bytesRecorded = 0;
header.data = Marshal.AllocHGlobal(128);
header.flags = 0;
Marshal.StructureToPtr(header, nhdr, false);
result = WinMM.midiInPrepareHeader(inHandle, nhdr, shdr);
if (result != 0)
{
throw new Exception("Cannot prepare IN header");
}
result = WinMM.midiInAddBuffer(inHandle, nhdr, shdr);
if (result != 0)
{
throw new Exception("Cannot add IN buffer");
}
return(result);
}
