HelloNppPlugin-Archive/HelloNppPluginDockWindow/Main.cs

using Kbg.NppPluginNET.PluginInfrastructure;
using System;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using HelloNppPluginDockWindow;

// ReSharper disable once CheckNamespace
public class Main
{
    public const string PluginName = nameof(HelloNppPluginDockWindow);

    public static void CommandMenuInit()
    {
        PluginBase.SetCommand(0, "Show hello form", ShowHi);
        PluginBase.SetCommand(0, "Show hello form (dockable)", ShowHiDockable);
    }

    public static void SetToolBarIcon()
    {
    }

    public static void PluginCleanUp()
    {
    }

    public static void OnNotification(ScNotification notification)
    {
    }

    private static void ShowHi()
    {
        var sayHiForm = new SayHiForm { StartPosition = FormStartPosition.CenterParent };
        sayHiForm.Show(new Win32Window(PluginBase.nppData._nppHandle));
    }

    private static void ShowHiDockable()
    {
        var sayHiForm = new SayHiForm();
        sayHiForm.Text += " (dockable)";
        sayHiForm.label1.Text += " (dockable)";

        // dlgID: the dlgDlg should be the index of funcItem where the current function pointer is in
        //     this case is 15.. so the initial value of funcItem[15]._cmdID - not the updated internal one !
        // uMask: define the default docking behaviour

        var nppTbData = new NppTbData
        {
            pszModuleName = PluginName,
            hClient = sayHiForm.Handle,
            pszName = sayHiForm.Text,
            hIconTab = (uint)sayHiForm.Icon.Handle,
            uMask = NppTbMsg.DWS_DF_CONT_RIGHT | NppTbMsg.DWS_ICONTAB | NppTbMsg.DWS_ICONBAR,
            //dlgID = 15,
        };

        var ptrNppTbData = Marshal.AllocHGlobal(Marshal.SizeOf(nppTbData));
        Marshal.StructureToPtr(nppTbData, ptrNppTbData, false);
        Win32.SendMessage(PluginBase.nppData._nppHandle, (uint)NppMsg.NPPM_DMMREGASDCKDLG, IntPtr.Zero, ptrNppTbData);
    }
}