C#利用WindowsApi获取外部程序中的ListView控件中的数据

C#利用WindowsApi获取外部程序中的ListView控件中的
数据
此文章，主要实现了C#利用Windows Api 获取外部程序中的ListView控件中的数据，也算是C# 使用API的一个高级一些的例子吧。

下面列出API相关的声明部分：
/// <summary>
/// 作者：三角猫
/// 网址： /
/// 声明：转载请务必保留原作者信息
/// </summary>
const uint LVM_FIRST = 0x1000;
const uint HDM_FIRST = 0x1200;
const uint LVM_GETITEMCOUNT = LVM_FIRST + 4;
const uint LVM_GETITEMW = LVM_FIRST + 75;
const uint LVM_GETHEADER = LVM_FIRST + 31;
const uint HDM_GETITEMCOUNT = HDM_FIRST + 0;
[DllImport("user32.DLL")]
static extern int SendMessage(IntPtr hWnd, uint Msg, int wParam, int lParam);
[DllImport("user32.DLL")]
static extern IntPtr FindWindow(string lpszClass, string lpszWindow);
[DllImport("user32.DLL")]
static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);
[DllImport("user32.dll")]
static extern uint GetWindowThreadProcessId(IntPtr hWnd, out uint dwProcessId);
const uint PROCESS_VM_OPERATION = 0x0008;
const uint PROCESS_VM_READ = 0x0010;
const uint PROCESS_VM_WRITE = 0x0020;
[DllImport("kernel32.dll")]
static extern IntPtr OpenProcess(uint dwDesiredAccess, bool bInheritHandle, uint dwProcessId);
const uint MEM_COMMIT = 0x1000;
const uint MEM_RELEASE = 0x8000;
const uint MEM_RESERVE = 0x2000;
const uint PAGE_READWRITE = 4;
[DllImport("kernel32.dll")]
static extern IntPtr VirtualAllocEx(IntPtr hProcess, IntPtr lpAddress, uint dwSize, uint flAllocationType, uint flProtect);
[DllImport("kernel32.dll")]
static extern bool VirtualFreeEx(IntPtr hProcess, IntPtr
lpAddress, uint dwSize, uint dwFreeType);
[DllImport("kernel32.dll")]
static extern bool CloseHandle(IntPtr handle);
[DllImport("kernel32.dll")]
static extern bool WriteProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress, IntPtr lpBuffer, int nSize, ref uint vNumberOfBytesRead);
[DllImport("kernel32.dll")]
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;
public int cchTextMax;
public int iImage;
public IntPtr lParam;
public int iIndent;
public int iGroupId;
public int cColumns;
public IntPtr puColumns;
}
int LVIF_TEXT = 0x0001;
几个操作LISTVIEW的自定义函数
/// <summary>
/// 获取 ListView 的行数
/// </summary>
/// <param name="hwnd"></param>
/// <returns></returns>
int ListView_GetItemCount(IntPtr hwnd)
{
return SendMessage(hwnd, LVM_GETITEMCOUNT, 0, 0);
}
/// <summary>
/// 获取 ListView 的标题栏句柄
/// </summary>
/// <param name="hwnd"></param>
/// <returns>
</returns>
private IntPtr ListView_GetHeader(IntPtr hwnd)
{
return (IntPtr)SendMessage(hwnd, LVM_GETHEADER, 0, 0); }
/// <summary>
/// 获取 ListView 的标题栏的列数
/// </summary>
/// <param name="header"></param>
/// <returns></returns>
private int Header_GetItemCount(IntPtr header)
{
return SendMessage(header, HDM_GETITEMCOUNT, 0, 0);
}
/// <summary>
/// 获取 ListView 的列数
/// </summary>
/// <param name="listViewHandle"></param>
/// <returns></returns>
int ListViewColumnCount(IntPtr listViewHandle)
{
return
Header_GetItemCount(ListView_GetHeader(listViewHandle));
}
C# api读取 MFC程序 listView中的内容
已经可以返回listView的行数和列数，但如何获取其中的内容呢
/// <summary>
/// 获取ListView 的行数
/// </summary>
/// <param name="hwnd"></param>
/// <returns></returns>
private int ListView_GetItemCount(IntPtr hwnd)
{
return SendMessage(hwnd, LVM_GETITEMCOUNT, 0, 0); }
/// <summary>
/// 获取ListView 的标题栏句柄
/// </summary>
/// <param name="hwnd"></param>
/// <returns></returns>
private IntPtr ListView_GetHeader(IntPtr hwnd)
{
return (IntPtr)SendMessage(hwnd, LVM_GETHEADER, 0, 0); }
/// <summary>
/// 获取ListView 的标题栏的列数
/// </summary>
/// <param name="header"></param>
/// <returns></returns>
private int Header_GetItemCount(IntPtr header)
{
return SendMessage(header, HDM_GETITEMCOUNT, 0, 0); }
/// <summary>
/// 获取ListView 的列数
/// </summary>
/// <param name="listViewHandle"></param>
/// <returns></returns>
private int ListViewColumnCount(IntPtr listViewHandle)
{
return
Header_GetItemCount(ListView_GetHeader(listViewHandle));
}
private void button1_Click(object sender, EventArgs e)
{
string lpszParentWindow = "testMFC"; //任务管理器中窗口标题
string lpszClass = "SysListView32"; //需要查找的子窗口的类名，也就是输入框
IntPtr ParenthWnd = new IntPtr(0);
IntPtr ListViewhWnd = new IntPtr(0);
IntPtr ProcessWnd = new IntPtr(0);
uint ProcessID;
//查到窗体，得到整个窗体
ParenthWnd = FindWindow(null, lpszParentWindow);
//判断这个窗体是否有效
if (!ParenthWnd.Equals(IntPtr.Zero))
{
ListViewhWnd = FindWindowEx(ParenthWnd, ListViewhWnd, lpszClass, "");
if (!ListViewhWnd.Equals(IntPtr.Zero))
{
StringBuilder sb = new StringBuilder(512);
int lineCount = ListView_GetItemCount(ListViewhWnd);
int columnCount = ListViewColumnCount(ListViewhWnd); }
}
}。