获取任务栏上程序运行个数

Question

例如:打开一个Excel程序,新建了很多的文档,Book1,Book2,Book3,Book4....
在任务栏上也会显示出Book1,Book2,Book3,Book4....
我怎么能获取有多少个Book文档存在任务栏上呢?

Answer 1

参考如下代码
using System.Runtime.InteropServices;[DllImport("user32.DLL")]
public static extern int SendMessage(IntPtr hWnd, uint Msg, int wParam, int lParam);
[DllImport("user32.DLL")]
public static extern IntPtr FindWindow(string lpszClass, string lpszWindow);
[DllImport("user32.DLL")]
public static extern IntPtr FindWindowEx(IntPtr hwndParent,
    IntPtr hwndChildAfter, string lpszClass, string lpszWindow);
[DllImport("user32.dll")]
public static extern uint GetWindowThreadProcessId(IntPtr hWnd,
    out uint dwProcessId);public const uint PROCESS_VM_OPERATION = 0x0008;
public const uint PROCESS_VM_READ = 0x0010;
public const uint PROCESS_VM_WRITE = 0x0020;[DllImport("kernel32.dll")]
public static extern IntPtr OpenProcess(uint dwDesiredAccess,
    bool bInheritHandle, uint dwProcessId);
public const uint MEM_COMMIT = 0x1000;
public const uint MEM_RELEASE = 0x8000;public const uint MEM_RESERVE = 0x2000;
public const uint PAGE_READWRITE = 4;[DllImport("kernel32.dll")]
public static extern IntPtr VirtualAllocEx(IntPtr hProcess, IntPtr lpAddress,
    uint dwSize, uint flAllocationType, uint flProtect);[DllImport("kernel32.dll")]
public static extern bool VirtualFreeEx(IntPtr hProcess, IntPtr lpAddress,
   uint dwSize, uint dwFreeType);[DllImport("kernel32.dll")]
public static extern bool CloseHandle(IntPtr handle);[DllImport("kernel32.dll")]
public static extern bool ReadProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress,
   IntPtr lpBuffer, int nSize, ref uint vNumberOfBytesRead);public const int WM_USER = 0x0400;
public const int TB_BUTTONCOUNT = WM_USER + 24;
public const int TB_GETBUTTONTEXTW = WM_USER + 75;private void button1_Click(object sender, EventArgs e)
{
    IntPtr vHandle = FindWindow("Shell_TrayWnd", null);
    vHandle = FindWindowEx(vHandle, IntPtr.Zero, "ReBarWindow32", null);
    vHandle = FindWindowEx(vHandle, IntPtr.Zero, "MSTaskSwWClass", null);
    vHandle = FindWindowEx(vHandle, IntPtr.Zero, "ToolbarWindow32", null);
    int vCount = SendMessage(vHandle, TB_BUTTONCOUNT, 0, 0);
    uint vProcessId;
    GetWindowThreadProcessId(vHandle, out vProcessId);
    IntPtr vProcess = OpenProcess(PROCESS_VM_OPERATION | PROCESS_VM_READ |
        PROCESS_VM_WRITE, false, vProcessId);
    IntPtr vPointer = VirtualAllocEx(vProcess, IntPtr.Zero, 0x1000,
        MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
    char[] vBuffer = new char[256];
    uint vNumberOfBytesRead = 0;
    try
    {
        for (int i = 0; i < vCount; i++)
        {
            SendMessage(vHandle, TB_GETBUTTONTEXTW, i, vPointer.ToInt32());
            ReadProcessMemory(vProcess, vPointer, 
                Marshal.UnsafeAddrOfPinnedArrayElement(vBuffer, 0),
                vBuffer.Length * sizeof(char), ref vNumberOfBytesRead);
            int l = 0;
            for (int j = 0; j < vBuffer.Length; j++)
            {
                if (vBuffer[j] == (char)0)
                {
                    l = j;
                    break;
                }
            }
            Console.WriteLine(new string(vBuffer, 0, l));
        }
    }
    finally
    {
        VirtualFreeEx(vProcess, vPointer, 0, MEM_RELEASE);
        CloseHandle(vProcess);
    }
}