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kamyker/HideTitleMenuBar.cs

Created December 23, 2022 23:54
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  1. kamyker created this gist Dec 23, 2022.
    68 changes: 68 additions & 0 deletions HideTitleMenuBar.cs
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    Original file line number Diff line number Diff line change
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    #if UNITY_EDITOR
    using System;
    using System.Runtime.InteropServices;
    using System.Text;
    using UnityEditor;
    using UnityEngine;

    public static class HideTitleMenuBar
    {
    [DllImport("user32.dll")]
    static extern IntPtr GetActiveWindow();

    [DllImport("user32.dll")]
    static extern IntPtr GetMenu(IntPtr hwnd);

    [DllImport("user32.dll")]
    static extern IntPtr SetMenu(IntPtr hwnd, IntPtr hMenu);

    [DllImport("user32.dll", CharSet=CharSet.Unicode, SetLastError=true)]
    static extern int GetWindowText(IntPtr hWnd, StringBuilder lpString, int nMaxCount);

    [DllImport("user32.dll")]
    static extern int GetWindowTextLength(IntPtr hWnd);

    [DllImport("user32.dll")]
    private static extern IntPtr GetWindowLongPtr(IntPtr hWnd, int nIndex);

    [DllImport("user32.dll")]
    private static extern IntPtr SetWindowLongPtr(IntPtr hWnd, int nIndex, IntPtr dwNewLong);

    const string idLastMenuPtr = "ks_toggleTitleBar_lastMenuPtr";
    const long titlebarStyle = 0x00C00000;

    [MenuItem("Tools/Kamyker/Toggle title bar _1")]
    static void ToggleTitleBar()
    {
    var unity = GetActiveWindow();
    if(unity == IntPtr.Zero)
    return;

    int titleLength = GetWindowTextLength(unity);
    var title = new StringBuilder(titleLength);
    GetWindowText(unity, title, titleLength);

    if(!title.ToString().Contains("unity", StringComparison.InvariantCultureIgnoreCase))
    {
    Debug.LogError($"Can't hide title bar of {title.ToString()}, change 'unity' in the code if it's translated differently");
    return;
    }

    var menu = GetMenu(unity);
    var style = GetWindowLongPtr(unity, -16);

    if(menu != IntPtr.Zero)
    {
    PlayerPrefs.SetString(idLastMenuPtr, menu.ToString());
    SetWindowLongPtr(unity, -16, new IntPtr(style.ToInt64() - titlebarStyle));
    SetMenu(unity, IntPtr.Zero);
    }
    else
    {
    var lastMenuPtr = long.Parse(PlayerPrefs.GetString(idLastMenuPtr));
    SetWindowLongPtr(unity, -16, new IntPtr(style.ToInt64() + titlebarStyle));
    SetMenu(unity, new IntPtr(lastMenuPtr));
    }
    }
    }
    #endif