unity3d发布EXE去掉边框

using UnityEngine;
using System.Collections;
using System.Runtime.InteropServices;
using System;

public class Test : MonoBehaviour
{ 
    /// <summary>
    /// 窗口宽度
    /// </summary>
    public int winWidth;
    /// <summary>
    /// 窗口高度
    /// </summary>
    public int winHeight;
    /// <summary>
    /// 窗口左上角x
    /// </summary>
    public int winPosX;
    /// <summary>
    /// 窗口左上角y
    /// </summary>
    public int winPosY;

    [DllImport("user32.dll")]
    static extern IntPtr SetWindowLong(IntPtr hwnd, int _nIndex, int dwNewLong);
    [DllImport("user32.dll")]
    static extern bool SetWindowPos(IntPtr hWnd, int hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags);
    [DllImport("user32.dll")]
    static extern IntPtr GetForegroundWindow();

    const uint SWP_SHOWWINDOW = 0x0040;
    const int GWL_STYLE = -16;
    const int WS_BORDER = 1;
    const int WS_POPUP = 0x800000;

    // Use this for initialization
    void Start()
    {
        winWidth = 610;
        winHeight = 350;
        //显示器支持的所有分辨率
        int i = Screen.resolutions.Length;

        int resWidth = Screen.resolutions[i - 1].width;
        int resHeight = Screen.resolutions[i - 1].height;

        winPosX = resWidth / 2 - winWidth / 2;
        winPosY = resHeight / 2 - winHeight / 2;

        SetWindowLong(GetForegroundWindow(), GWL_STYLE, WS_POPUP);
        bool result = SetWindowPos(GetForegroundWindow(), 0, winPosX, winPosY, winWidth, winHeight, SWP_SHOWWINDOW);

    }
}

GUI坐标偏差：

using UnityEngine;
using System.Collections;
using System.Runtime.InteropServices;
using System;

public class Test : MonoBehaviour
{
    /// <summary>
    /// 窗口宽度
    /// </summary>
    public int winWidth;
    /// <summary>
    /// 窗口高度
    /// </summary>
    public int winHeight;
    /// <summary>
    /// 窗口左上角x
    /// </summary>
    public int winPosX;
    /// <summary>
    /// 窗口左上角y
    /// </summary>
    public int winPosY;

    [DllImport("user32.dll")]
    static extern IntPtr SetWindowLong(IntPtr hwnd, int _nIndex, int dwNewLong);
    [DllImport("user32.dll")]
    static extern bool SetWindowPos(IntPtr hWnd, int hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags);
    [DllImport("user32.dll")]
    static extern IntPtr GetForegroundWindow();

    [DllImport("User32.dll", EntryPoint = "GetSystemMetrics")]
    public static extern IntPtr GetSystemMetrics(int nIndex);

    const int SM_CXSCREEN = 0x00000000;
    const int SM_CYSCREEN = 0x00000001;

    const uint SWP_SHOWWINDOW = 0x0040;
    const int GWL_STYLE = -16;
    const int WS_BORDER = 1;
    const int WS_POPUP = 0x800000;

    public GUIText t;

    // Use this for initialization
    void Start()
    {
        winWidth = 610;
        winHeight = 350;
        //当前屏幕分辨率
        int resWidth = (int)GetSystemMetrics(SM_CXSCREEN);
        int resHeight = (int)GetSystemMetrics(SM_CYSCREEN);

        winPosX = resWidth / 2 - winWidth / 2;
        winPosY = resHeight / 2 - winHeight / 2 -1;

        SetWindowLong(GetForegroundWindow(), GWL_STYLE, WS_POPUP);
        //测试发现左下角坐标为（0,1),修改如下
        bool result = SetWindowPos(GetForegroundWindow(), 0, winPosX, winPosY, winWidth, winHeight, SWP_SHOWWINDOW);
        //bool result = SetWindowPos(GetForegroundWindow(), 0, winPosX, winPosY, winWidth, winHeight, SWP_SHOWWINDOW);
        
    }

    void OnGUI()
    {
        if (Input.GetMouseButtonDown(0))
        {
            t.text = "X:"+Input.mousePosition.x + " Y:" + Input.mousePosition.y;
        }
    }
}