用API函数操作其他程序的listview
请问怎样用API函数操作其他窗体的listview例如获得任务管理器中,进程liseview的第一行第一列的值 --------------------编程问答-------------------- 有没高手帮忙解答啊~~~~ --------------------编程问答-------------------- 不是吧.一个人都没有
--------------------编程问答-------------------- google "SendMessage" and "LB_GETTOPINDEX" --------------------编程问答-------------------- 参考如下代码：
using System.Runtime.InteropServices;
public const uint LVM_FIRST = 0x1000;
public const uint LVM_GETITEMCOUNT = LVM_FIRST + 4;
public const uint LVM_GETITEMW = LVM_FIRST + 75;
[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 WriteProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress,
IntPtr lpBuffer, int nSize, ref uint vNumberOfBytesRead);
[DllImport("kernel32.dll")]
public static extern bool ReadProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress,
IntPtr lpBuffer, int nSize, ref uint vNumberOfBytesRead);
public struct LVITEM
{
public int mask;
public int iItem;
public int iSubItem;
public int state;
public int stateMask;
public IntPtr pszText; string
public int cchTextMax;
public int iImage;
public IntPtr lParam;
public int iIndent;
public int iGroupId;
public int cColumns;
public IntPtr puColumns;
}
public int LVIF_TEXT = 0x0001;
public int ListView_GetItemCount(IntPtr AHandle)
{
return SendMessage(AHandle, LVM_GETITEMCOUNT, 0, 0);
}
private void button1_Click(object sender, EventArgs e)
{
IntPtr vHandle = FindWindow("#32770", "Windows 任务管理器");
vHandle = FindWindowEx(vHandle, IntPtr.Zero, "#32770", null);
vHandle = FindWindowEx(vHandle, IntPtr.Zero, "SysListView32", null);
if (vHandle == IntPtr.Zero) return;
int vItemCount = ListView_GetItemCount(vHandle);
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, 4096,
MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
try
{
for (int i = 0; i < vItemCount; i++)
{
byte[] vBuffer = new byte[256];
LVITEM[] vItem = new LVITEM[1];
vItem[0].mask = LVIF_TEXT;
vItem[0].iItem = i;
vItem[0].iSubItem = 0;
vItem[0].cchTextMax = vBuffer.Length;
vItem[0].pszText = (IntPtr)((int)vPointer + Marshal.SizeOf(typeof(LVITEM)));
uint vNumberOfBytesRead = 0;
WriteProcessMemory(vProcess, vPointer,
Marshal.UnsafeAddrOfPinnedArrayElement(vItem, 0),
Marshal.SizeOf(typeof(LVITEM)), ref vNumberOfBytesRead);
SendMessage(vHandle, LVM_GETITEMW, i, vPointer.ToInt32());
ReadProcessMemory(vProcess,
(IntPtr)((int)vPointer + Marshal.SizeOf(typeof(LVITEM))),
Marshal.UnsafeAddrOfPinnedArrayElement(vBuffer, 0),
vBuffer.Length, ref vNumberOfBytesRead);
string vText = Marshal.PtrToStringUni(
Marshal.UnsafeAddrOfPinnedArrayElement(vBuffer, 0));
Console.WriteLine(vText);
}
}
finally
{
VirtualFreeEx(vProcess, vPointer, 0, MEM_RELEASE);
CloseHandle(vProcess);
}
}
补充：.NET技术 , C#
