C#里获取系统托盘信息

最近做的一个项目需要取得系统托盘的信息，在网上找了一些资料，不过大部分都是C++类的，没有一些完整的实现，所以自己按照那些说的思路在C#里进行摸索，最后总处是达到了目的，以下首先看一下，我取得的信息：

获取托盘信息

下面我就把相关的C#的代码贴在下面，以方便有需要的朋友

首先是在这过程中需要用到的一些API函数及声明Win32.cs：

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Runtime.InteropServices; namespace ListTrayBarInfo { public class Win32 { public const int MEM_RELEASE = 0x8000; public const int MEM_COMMIT = 0x1000; public const int PAGE_READWRITE = 0x04; public const int WM_USER = 0x0400; public const int TB_GETBUTTON = (WM_USER + 23); public const int TB_BUTTONCOUNT = (WM_USER + 24); public const int TB_HIDEBUTTON = (WM_USER + 4); public const int STILL_ACTIVE = 0x0103; [StructLayout(LayoutKind.Sequential)] public class TRAYDATA { public IntPtr hwnd; public uint uID; public uint uCallbackMessage; public int Reserved0; public int Reserved1; public IntPtr hIcon; //托盘图标的句柄 } [StructLayout(LayoutKind.Sequential, Pack = 1)] public class TBBUTTON { public int iBitmap; public int idCommand; public byte fsState; public byte fsStyle; public byte bReserved0; public byte bReserved1; public int dwData; public int iString; } [Flags] public enum ProcessAccessFlags : uint { All = 0x001F0FFF, Terminate = 0x00000001, CreateThread = 0x00000002, VMOperation = 0x00000008, VMRead = 0x00000010, VMWrite = 0x00000020, DupHandle = 0x00000040, SetInformation = 0x00000200, QueryInformation = 0x00000400, Synchronize = 0x00100000 } [DllImport("kernel32.dll", SetLastError = true, ExactSpelling = true)] public static extern int VirtualAllocEx(IntPtr hProcess, int lpAddress, int dwSize, int flAllocationType, int flProtect); [DllImport("kernel32.dll", SetLastError = true, ExactSpelling = true)] public static extern bool VirtualFreeEx(IntPtr hProcess, int lpAddress, int dwSize, uint dwFreeType); [DllImport("kernel32.dll", SetLastError = true)] public static extern bool CloseHandle(IntPtr hHandle); [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = false)] public static extern int SendMessage(IntPtr hWnd, Int32 Msg, Int32 wParam, Int32 lParam); [DllImport("kernel32.dll", SetLastError = true, PreserveSig = true)] public static extern int ReadProcessMemory(IntPtr hProcess, int lpBaseAddress, IntPtr lpBuffer, int nSize, out int lpNumberOfBytesRead); [DllImport("kernel32.dll", SetLastError = true, PreserveSig = true)] public static extern int ReadProcessMemory(IntPtr hProcess, int lpBaseAddress, byte[] lpBuffer, int nSize, out int lpNumberOfBytesRead); [DllImport("user32.dll", SetLastError = true)] public static extern IntPtr FindWindow(string lpClassName, string lpWindowName); [DllImport("user32.dll", SetLastError = true)] public static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow); [DllImport("user32.dll")] public static extern IntPtr GetWindowThreadProcessId(IntPtr hWnd, ref int ProcessId); [DllImport("kernel32.dll", SetLastError = true)] public static extern IntPtr OpenProcess(UInt32 dwDesiredAccess, Int32 bInheritHandle, UInt32 dwProcessId); [DllImport("psapi.dll", SetLastError = true)] public static extern int GetProcessImageFileName(IntPtr hProcess, StringBuilder lpImageFileName, int nSize); [DllImport("kernel32.dll", SetLastError = true)] public static extern int QueryDosDevice(string lpDeviceName, StringBuilder lpTargetPath, int ucchMax); [DllImport("kernel32.dll", SetLastError = true)] public static extern bool GetExitCodeProcess(IntPtr hProcess, ref int lpExitCode); } }

下面就是实现托盘信息读取的类SysTrayWnd.cs：

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Runtime.InteropServices; namespace ListTrayBarInfo { public class SysTrayWnd { public struct TrayItemData { public int dwProcessID; public byte fsState; public byte fsStyle; public IntPtr hIcon; public IntPtr hProcess; public IntPtr hWnd; public int idBitmap; public int idCommand; public string lpProcImagePath; public string lpTrayToolTip; } public static IntPtr GetTrayWnd() { IntPtr handle = Win32.FindWindow("Shell_TrayWnd", null); handle = Win32.FindWindowEx(handle, IntPtr.Zero, "TrayNotifyWnd", null); handle = Win32.FindWindowEx(handle, IntPtr.Zero, "SysPager", null); handle = Win32.FindWindowEx(handle, IntPtr.Zero, "ToolbarWindow32", null); return handle; } public static TrayItemData[] GetTrayWndDetail() { SortedList<string, TrayItemData> stlTrayItems = new SortedList<string, TrayItemData>(); try { Win32.TBBUTTON tbButtonInfo = new Win32.TBBUTTON(); IntPtr hTrayWnd = IntPtr.Zero; IntPtr hTrayProcess = IntPtr.Zero; int iTrayProcessID = 0; int iAllocBaseAddress = 0; int iRet = 0; int iTrayItemCount = 0; hTrayWnd = GetTrayWnd(); Win32.GetWindowThreadProcessId(hTrayWnd, ref iTrayProcessID); hTrayProcess =Win32.OpenProcess( (uint)Win32.ProcessAccessFlags.All | (uint)Win32.ProcessAccessFlags.VMOperation | (uint)Win32.ProcessAccessFlags.VMRead | (uint)Win32.ProcessAccessFlags.VMWrite, 0, (uint)iTrayProcessID); iAllocBaseAddress = Win32.VirtualAllocEx(hTrayProcess, 0, Marshal.SizeOf(tbButtonInfo), Win32.MEM_COMMIT, Win32.PAGE_READWRITE); iTrayItemCount = Win32.SendMessage(hTrayWnd, Win32.TB_BUTTONCOUNT, 0, 0); for (int i = 0; i < iTrayItemCount; i++) { try { TrayItemData trayItem = new TrayItemData(); Win32.TRAYDATA trayData = new Win32.TRAYDATA(); int iOut = 0; int dwProcessID = 0; IntPtr hRelProcess = IntPtr.Zero; string strTrayToolTip = string.Empty; iRet = Win32.SendMessage(hTrayWnd, Win32.TB_GETBUTTON, i, iAllocBaseAddress); IntPtr hButtonInfo = Marshal.AllocHGlobal(Marshal.SizeOf(tbButtonInfo)); IntPtr hTrayData = Marshal.AllocHGlobal(Marshal.SizeOf(trayData)); iRet = Win32.ReadProcessMemory(hTrayProcess, iAllocBaseAddress, hButtonInfo, Marshal.SizeOf(tbButtonInfo), out iOut); Marshal.PtrToStructure(hButtonInfo, tbButtonInfo); iRet = Win32.ReadProcessMemory(hTrayProcess, tbButtonInfo.dwData, hTrayData, Marshal.SizeOf(trayData), out iOut); Marshal.PtrToStructure(hTrayData, trayData); byte[] bytTextData = new byte[1024]; iRet = Win32.ReadProcessMemory(hTrayProcess, tbButtonInfo.iString, bytTextData, 1024, out iOut); strTrayToolTip = Encoding.Unicode.GetString(bytTextData); if (!string.IsNullOrEmpty(strTrayToolTip)) { int iNullIndex = strTrayToolTip.IndexOf('\0'); strTrayToolTip = strTrayToolTip.Substring(0, iNullIndex); } Win32.GetWindowThreadProcessId(trayData.hwnd, ref dwProcessID); hRelProcess = Win32.OpenProcess((uint)Win32.ProcessAccessFlags.QueryInformation, 0, (uint)dwProcessID); StringBuilder sbProcImagePath = new StringBuilder(256); if (hRelProcess != IntPtr.Zero) { Win32.GetProcessImageFileName(hRelProcess, sbProcImagePath, sbProcImagePath.Capacity); } string strImageFilePath = string.Empty; if (sbProcImagePath.Length > 0) { int iDeviceIndex = sbProcImagePath.ToString().IndexOf("\\", "\\Device\\HarddiskVolume".Length); string strDevicePath = sbProcImagePath.ToString().Substring(0, iDeviceIndex); int iStartDisk = (int)'A'; while (iStartDisk <= (int)'Z') { StringBuilder sbWindowImagePath = new StringBuilder(256); iRet = Win32.QueryDosDevice(((char)iStartDisk).ToString() + ":", sbWindowImagePath, sbWindowImagePath.Capacity); if (iRet != 0) { if (sbWindowImagePath.ToString() == strDevicePath) { strImageFilePath = ((char)iStartDisk).ToString() + ":" + sbProcImagePath.ToString().Replace(strDevicePath, ""); break; } } iStartDisk++; } } trayItem.dwProcessID = dwProcessID; trayItem.fsState = tbButtonInfo.fsState; trayItem.fsStyle = tbButtonInfo.fsStyle; trayItem.hIcon = trayData.hIcon; trayItem.hProcess = hRelProcess; trayItem.hWnd = trayData.hwnd; trayItem.idBitmap = tbButtonInfo.iBitmap; trayItem.idCommand = tbButtonInfo.idCommand; trayItem.lpProcImagePath = strImageFilePath; trayItem.lpTrayToolTip = strTrayToolTip; stlTrayItems[string.Format("{0:d8}", tbButtonInfo.idCommand)] = trayItem; } catch { continue; } } Win32.VirtualFreeEx(hTrayProcess, iAllocBaseAddress, Marshal.SizeOf(tbButtonInfo), Win32.MEM_RELEASE); Win32.CloseHandle(hTrayProcess); TrayItemData[] trayItems = new TrayItemData[stlTrayItems.Count]; stlTrayItems.Values.CopyTo(trayItems, 0); return trayItems; } catch (SEHException ex) { throw ex; } catch (Exception ex) { throw ex; } } public static void RefreshTrayWnd() { TrayItemData[] trayItems = GetTrayWndDetail(); IntPtr hTrayWnd=GetTrayWnd(); for (int i = trayItems.Length - 1; i >= 0; i--) { int iProcessExitCode = 0; Win32.GetExitCodeProcess(trayItems[i].hProcess, ref iProcessExitCode); if (iProcessExitCode != Win32.STILL_ACTIVE) { //通过隐藏图标来达到刷新的动作 int iRet = Win32.SendMessage(hTrayWnd, Win32.TB_HIDEBUTTON, trayItems[i].idCommand, 0); } } } } }

下面是读取和调用的方式：

private void btnGetTrayDetail_Click(object sender, EventArgs e) { SysTrayWnd.TrayItemData[] trayItems = SysTrayWnd.GetTrayWndDetail(); this.dataGridView1.Rows.Add(trayItems.Length); int iRowIndex=0; foreach (SysTrayWnd.TrayItemData trayItem in trayItems) { //窗口句柄 this.dataGridView1.Rows[iRowIndex].Cells[this.colTrayItemWinHandle.Name].Value = trayItem.hWnd.ToString("X").ToUpper(); this.dataGridView1.Rows[iRowIndex].Cells[this.colTrayItemWinHandle.Name].ToolTipText = trayItem.hWnd.ToString(); //进程句柄 this.dataGridView1.Rows[iRowIndex].Cells[this.colTrayItemProcHandle.Name].Value = trayItem.hProcess.ToString("X").ToUpper(); this.dataGridView1.Rows[iRowIndex].Cells[this.colTrayItemProcHandle.Name].ToolTipText = trayItem.hProcess.ToString(); //进程ID this.dataGridView1.Rows[iRowIndex].Cells[this.colTrayItemPID.Name].Value = trayItem.dwProcessID.ToString(); this.dataGridView1.Rows[iRowIndex].Cells[this.colTrayItemPID.Name].ToolTipText = trayItem.dwProcessID.ToString(); //进程映象路径 this.dataGridView1.Rows[iRowIndex].Cells[this.colTrayItemProcImagePath.Name].Value = trayItem.lpProcImagePath; this.dataGridView1.Rows[iRowIndex].Cells[this.colTrayItemProcImagePath.Name].ToolTipText = trayItem.lpProcImagePath; //托盘图标提示内容 this.dataGridView1.Rows[iRowIndex].Cells[this.colTrayItemIconTipText.Name].Value = trayItem.lpTrayToolTip; this.dataGridView1.Rows[iRowIndex].Cells[this.colTrayItemIconTipText.Name].ToolTipText = trayItem.lpTrayToolTip; //托盘图标句柄 this.dataGridView1.Rows[iRowIndex].Cells[this.colTrayItemIconHandle.Name].Value = trayItem.hIcon.ToString("X").ToUpper(); this.dataGridView1.Rows[iRowIndex].Cells[this.colTrayItemIconHandle.Name].ToolTipText = trayItem.hIcon.ToString(); //托盘图标 this.dataGridView1.Rows[iRowIndex].Cells[this.colTrayItemIcon.Name].Value =Icon.FromHandle(trayItem.hIcon); this.dataGridView1.Rows[iRowIndex].Cells[this.colTrayItemIconHandle.Name].ToolTipText = trayItem.hIcon.ToString(); iRowIndex++; } }