WinForm the settings for the form maximization

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1. 窗体最大化时 非全屏 不会遮盖任务栏private void btnFormMax_Click(object sender, EventArgs e) {        if (this.WindowState == FormWindowState.Maximized)        {            this.WindowState = FormWindowState.Normal;        }      else        {            this.WindowState = FormWindowState.Maximized;        } } 此时this.FormBorderStyle. 默认为 Sizable2. 窗体最大化时 会全屏 及遮盖任务栏 private void btnFormMax_Click(object sender, EventArgs e) {       if (this.WindowState == FormWindowState.Maximized)       {                 this.WindowState = FormWindowState.Normal;       }       else       {          this.FormBorderStyle. = FormBorderStyle.None;          this.WindowState = FormWindowState.Maximized;       }    } 此时this.FormBorderStyle. 为 None 不会显示窗体标题栏等相关 3. 窗体最大化时 非全屏 不会遮盖任务栏 private void btnFormMax_Click(object sender, EventArgs e) {       if (this.WindowState == FormWindowState.Maximized)       {                 this.WindowState = FormWindowState.Normal;       }       else       {          this.FormBorderStyle. = FormBorderStyle.None;          this.MaximumSize = new Size(Screen.PrimaryScreen.WorkingArea.Width, Screen.PrimaryScreen.WorkingArea.Height);          this.WindowState = FormWindowState.Maximized;       }    }此时this.FormBorderStyle. 为 None 不会显示窗体标题栏等相关  窗体最大化的时候，如何指定窗体的位置、大小(C#)using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; namespace WindowsApplication1 { public partial class FormRegion : Form. { private const long WM_GETMINMAXINFO = 0x24; public struct POINTAPI { public int x; public int y; } public struct MINMAXINFO { public POINTAPI ptReserved; public POINTAPI ptMaxSize; public POINTAPI ptMaxPosition; public POINTAPI ptMinTrackSize; public POINTAPI ptMaxTrackSize; } public FormRegion() { InitializeComponent(); this.MaximumSize = new Size(Screen.PrimaryScreen.WorkingArea.Width, Screen.PrimaryScreen.WorkingArea.Height); } protected override void WndProc(ref System.Windows.Forms.Message m) { base.WndProc(ref m); if (m.Msg == WM_GETMINMAXINFO) { MINMAXINFO mmi = (MINMAXINFO)m.GetLParam(typeof(MINMAXINFO)); mmi.ptMinTrackSize.x = this.MinimumSize.Width; mmi.ptMinTrackSize.y = this.MinimumSize.Height; if (this.MaximumSize.Width != 0 || this.MaximumSize.Height != 0) { mmi.ptMaxTrackSize.x = this.MaximumSize.Width; mmi.ptMaxTrackSize.y = this.MaximumSize.Height; } mmi.ptMaxPosition.x = 1; mmi.ptMaxPosition.y = 1; System.Runtime.InteropServices.Marshal.StructureToPtr(mmi, m.LParam, true); } } } }  MessageBox.Show("当前窗体标题栏高度"+(this.Height - this.ClientRectangle.Height).ToString());//获得当前窗体标题栏高度 ClientRectangle//获取表示控件的工作区的矩形 MessageBox.Show(SystemInformation.PrimaryMonitorSize.ToString()); //获取主显示器屏幕的尺寸(像素) //获取主显示器当前当前视频模式的尺寸(以象素为单位) MessageBox.Show("菜单栏高度"+SystemInformation.MenuHeight.ToString()); //获取标准菜单栏的高度 MessageBox.Show("标题栏高度"+SystemInformation.CaptionHeight.ToString()); //获取标准标题栏的高度 MenuHeight//获取一个菜单行的高度(以象素为单位) CaptionHeight//获取窗口的标准标题栏区域的高度(以象素为单位)