static bool TryOpenByOtherInstance(string[] args)
{
var files = args.Where(arg => !arg.StartsWith("-")).ToArray();
if (files.IsEmpty())
{
return(false);
}
var name = Process.GetCurrentProcess().ProcessName;
var otherInstances = Process.GetProcessesByName(name)
.Where(inst => inst != Process.GetCurrentProcess() && inst.MainWindowHandle != IntPtr.Zero)
.ToArray();
if (!otherInstances.IsNullOrEmpty())
{
var inst = otherInstances.First();
var data = Encoding.UTF8.GetBytes(files.JoinString(";"));
var buffer = OSHelper.IntPtrAlloc(data);
var cds = new COPYDATASTRUCT();
cds.dwData = new IntPtr(OPEN_FILES_MESSAGE);
cds.cbData = data.Length;
cds.lpData = buffer;
var cbs_buffer = OSHelper.IntPtrAlloc(cds);
IntPtr result = User32.SendMessage(inst.MainWindowHandle, WinMessages.WM_COPYDATA, IntPtr.Zero, cbs_buffer);
OSHelper.IntPtrFree(cbs_buffer);
OSHelper.IntPtrFree(buffer);
return(result != IntPtr.Zero);
}
return(false);
}
