[SOLVED] How to remove the title bar of a game ?

[wixette]

@Igor_Fedorovskiy

HI, who know how do this from MacOS?

For macOS, create a dynamic library project in XCode. Put the following Objective-C code into the project:

TitlebarLib.h

#import <Foundation/Foundation.h>
#import <AppKit/AppKit.h>

#if __cplusplus
extern "C" {
#endif

int ShowTitleBar();

int HideTitleBar();

#if __cplusplus
}
#endif

TitlebarLib.m

#import "TitlebarLib.h"

int ShowTitleBar() {
    NSWindow* win = [NSApplication.sharedApplication mainWindow];
    win.titleVisibility = NSWindowTitleVisible;
    win.titlebarAppearsTransparent = false;
    win.movableByWindowBackground = false;
    win.styleMask &= ~NSWindowStyleMaskFullSizeContentView;
    return 0;
}

int HideTitleBar() {
    NSWindow* win = [NSApplication.sharedApplication mainWindow];
    win.titleVisibility = NSWindowTitleHidden;
    win.titlebarAppearsTransparent = true;
    win.movableByWindowBackground = true;
    win.styleMask |= NSWindowStyleMaskFullSizeContentView;
    return 0;
}

Build the XCode project. Put the output file libTitlebarLib.dylib into the Plugins dir of the Unity project. Use the following code to import the two native functions:

using System.Runtime.InteropServices;
using UnityEngine;

public class GameManager : MonoBehaviour {
  [DllImport("libTitlebarLib")]
  public extern static int ShowTitleBar();

  [DllImport("libTitlebarLib")]
  public extern static int HideTitleBar();

  public void OnShowTitleBar() {
    int ret = ShowTitleBar();
    Debug.Log($"ShowTitleBar = {ret}");
  }

  public void OnHideTitleBar() {
    int ret = HideTitleBar();
    Debug.Log($"HideTitleBar = {ret}");
  }
}