一、格式化磁盘
[DllImport("shell32.dll")]
private static extern int SHFormatDrive(IntPtr hWnd, int drive, long fmtID, int Options); public const long SHFMT_ID_DEFAULT = 0xFFFF; private void button1_Click( object sender, EventArgs e) { try { // 调用API函数SHFormatDrive执行格式化磁盘操作 SHFormatDrive( this.Handle, comboBox1.SelectedIndex, SHFMT_ID_DEFAULT, 0); MessageBox.Show( " 格式化完成 ", " 信息 ", MessageBoxButtons.OK, MessageBoxIcon.Information); } catch { MessageBox.Show( " 格式化失败 ", " 信息 ", MessageBoxButtons.OK, MessageBoxIcon.Information); } }
二、设置打印机：ManagementObjectSearcher query = new ManagementObjectSearcher("SELECT * FROM Win32_Printer");//查找打印设备
ManagementObjectCollection queryCollection = query.Get(); // 获取查找到的打印设备 foreach (ManagementObject mo in queryCollection) // 遍历查找到的打印设备 { if ( string.Compare(mo[ " Name "].ToString(), " PrinterName ", true) == 0) // 判断默认的打印设备是否为PrinterName { mo.InvokeMethod( " SetDefaultPrinter ", null); // 设置默认打印设备 break; } }
三、设置桌面背景：string P_str_Path = textBox1.Text;//记录图片路径
RegistryKey myRKey = Registry.CurrentUser; // 获取册注表中的基表 myRKey = myRKey.OpenSubKey( " Control Panel\\Desktop ", true); // 检索指定的子项 // 通过调用RegistryKey对象的SetValue方法设置桌面背景 myRKey.SetValue( " WallPaper ", P_str_Path); myRKey.SetValue( " TitleWallPaper ", " 2 "); myRKey.Close(); // 关闭注册表 MessageBox.Show( " 桌面背景已经更改，请重新启动计算机！ ", " 信息 ", MessageBoxButtons.OK, MessageBoxIcon.Information);
四、修改计算机名：[DllImport("kernel32.dll")]
private static extern int SetComputerName( string ipComputerName); // 重写API函数 private void Frm_Main_Load( object sender, EventArgs e) { Computer computer = new Computer(); // 创建计算机对象 textBox1.Text = computer.Name; // 显示计算机名称 } private void button1_Click( object sender, EventArgs e) { if (textBox2.Text == "") // 判断计算机名称是否为空 { MessageBox.Show( " 计算机名称不能为空！ "); } else { SetComputerName(textBox2.Text); // 修改计算机名称 MessageBox.Show( " 计算机名称修改成功，请重新启动计算机使之生效！ "); } }
五、安装键盘钩子： private IntPtr pKeyboardHook = IntPtr.Zero;//键盘钩子句柄
public delegate int HookProc( int nCode, Int32 wParam, IntPtr lParam); // 钩子委托声明 // 键盘钩子委托实例不能省略变量 private HookProc KeyboardHookProcedure; // 底层键盘钩子 public const int idHook = 13; // 安装钩子 [DllImport( " user32.dll ", CallingConvention = CallingConvention.StdCall)] public static extern IntPtr SetWindowsHookEx( int idHook, HookProc lpfn, IntPtr pInstance, int threadId); // 卸载钩子 [DllImport( " user32.dll ", CallingConvention = CallingConvention.StdCall)] public static extern bool UnhookWindowsHookEx(IntPtr pHookHandle); // 键盘钩子处理函数 private int KeyboardHookProc( int nCode, Int32 wParam, IntPtr lParam) { KeyMSG m = (KeyMSG)Marshal.PtrToStructure(lParam, typeof(KeyMSG)); if (pKeyboardHook != IntPtr.Zero) { switch (((Keys)m.vkCode)) { case Keys.LWin: case Keys.RWin: case Keys.Delete: case Keys.Alt: case Keys.Escape: case Keys.F4: case Keys.Control: case Keys.Tab: return 1; } } return 0; } // 安装钩子 public bool InsertHook() { IntPtr pIn = (IntPtr) 4194304; if ( this.pKeyboardHook == IntPtr.Zero) // 如果没安装钩子 { this.KeyboardHookProcedure = new HookProc(KeyboardHookProc); // 安装钩子 this.pKeyboardHook = SetWindowsHookEx(idHook, KeyboardHookProcedure, pIn, 0); if ( this.pKeyboardHook == IntPtr.Zero) // 如果安装钩子失败 { this.UnInsertHook(); // 卸载钩子 return false; // 返回false } } return true; } // 卸载钩子 public bool UnInsertHook() { bool result = true; if ( this.pKeyboardHook != IntPtr.Zero) // 如果存在键盘钩子 { result = (UnhookWindowsHookEx( this.pKeyboardHook) && result); // 卸载钩子 this.pKeyboardHook = IntPtr.Zero; } return result; } [StructLayout(LayoutKind.Sequential)] public struct KeyMSG { public int vkCode; public int scanCode; public int flags; public int time; public int dwExtraInfo; }
六、获取内存使用情况： Microsoft.VisualBasic.Devices.Computer myInfo = new Microsoft.VisualBasic.Devices.Computer();
// 获取物理内存总量 pbMemorySum.Maximum = Convert.ToInt32(myInfo.Info.TotalPhysicalMemory/ 1024/ 1024); pbMemorySum.Value = Convert.ToInt32(myInfo.Info.TotalPhysicalMemory / 1024 / 1024); lblSum.Text = (myInfo.Info.TotalPhysicalMemory / 1024).ToString(); // 获取可用物理内存总量 pbMemoryUse.Maximum = Convert.ToInt32(myInfo.Info.TotalPhysicalMemory / 1024 / 1024); pbMemoryUse.Value = Convert.ToInt32(myInfo.Info.AvailablePhysicalMemory / 1024 / 1024); lblMuse.Text = (myInfo.Info.AvailablePhysicalMemory / 1024).ToString(); // 获取虚拟内存总量 pbVmemorysum.Maximum = Convert.ToInt32(myInfo.Info.TotalVirtualMemory / 1024 / 1024); pbVmemorysum.Value = Convert.ToInt32(myInfo.Info.TotalVirtualMemory / 1024 / 1024); lblVinfo.Text = (myInfo.Info.TotalVirtualMemory / 1024).ToString(); // 获取可用虚拟内存总量 pbVmemoryuse.Maximum = Convert.ToInt32(myInfo.Info.TotalVirtualMemory / 1024 / 1024); pbVmemoryuse.Value = Convert.ToInt32(myInfo.Info.AvailableVirtualMemory/ 1024 / 1024);
lblVuse.Text = (myInfo.Info.AvailableVirtualMemory / 1024).ToString();