去掉禁止系统菜单里的MOVE方法

1、用API去掉Move

[DllImport("user32.dll",EntryPoint="GetSystemMenu")] extern static System.IntPtr GetSystemMenu(System.IntPtr hWnd , System.IntPtr bRevert);

[DllImport("user32.dll",EntryPoint="RemoveMenu")] extern static int RemoveMenu (IntPtr hMenu, int nPos, int flags);

static int MF_BYPOSITION = 0x400; static int MF_REMOVE = 0x1000;

System.IntPtr hdl= GetSystemMenu(this.Handle,System.IntPtr.Zero); int nflag =MF_BYPOSITION | MF_REMOVE; int npos =1; RemoveMenu(hdl,npos,nflag);

2、去掉系统菜单(不推荐)

private const int WS_SYSMENU = 0x00080000;

protected override CreateParams CreateParams   {    get    {     CreateParams cp =  base.CreateParams;     cp.Style = cp.Style & ~WS_SYSMENU;     return cp;    } }

示范代码如下

using  System;  using  System.Windows.Forms;  using System.Runtime.InteropServices; public  class  Test  :  Form  { 

 [DllImport("user32.dll",EntryPoint="GetSystemMenu")]  extern static System.IntPtr GetSystemMenu(System.IntPtr hWnd , System.IntPtr bRevert);

 [DllImport("user32.dll",EntryPoint="RemoveMenu")]  extern static int RemoveMenu (IntPtr hMenu, int nPos, int flags);

 static int MF_BYPOSITION = 0x400;  static int MF_REMOVE = 0x1000;

   Test()     {         Text                        =  "不让拖动的标题栏";         FormBorderStyle  =  FormBorderStyle.FixedDialog;         MaximizeBox          =  false;         MinimizeBox          =  false; 

 //method 1  /*System.IntPtr hdl= GetSystemMenu(this.Handle,System.IntPtr.Zero);   int nflag =MF_BYPOSITION | MF_REMOVE;   int npos =1;   RemoveMenu(hdl,npos,nflag);  */   }     private const int WM_NCHITTEST = 0x84;   private const int HTCAPTION = 0x2;   private const int HTCLIENT = 0x1;

   protected  override  void  WndProc(ref  Message  m)     {         base.WndProc(ref  m);         if(m.Msg  ==   WM_NCHITTEST  &&  m.Result  ==  (IntPtr)HTCAPTION)       {             m.Result  =  (IntPtr) HTCLIENT;         }     }    //method 2  private const int WS_SYSMENU = 0x00080000;

 protected override CreateParams CreateParams    {     get     {   CreateParams cp =  base.CreateParams;   cp.Style = cp.Style & ~WS_SYSMENU;   return cp;     }  }

   static  void  Main()     {         Application.Run(new  Test());     }  }