window api遍历窗口及窗口下面的控件

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.Runtime.InteropServices; namespace WindowsFormsApplication2 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } [DllImport("user32.dll", CharSet = CharSet.Auto)] private static extern int GetWindowText(HandleRef hWnd, StringBuilder lpString, int nMaxCount); [DllImport("user32.dll", CharSet = CharSet.Auto)] private static extern int GetWindowTextLength(HandleRef hWnd); [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)] private static extern bool EnumWindows(EnumThreadWindowsCallback callback, IntPtr extraData); [DllImport("user32.dll", ExactSpelling = true)] private static extern bool EnumChildWindows(HandleRef hwndParent, EnumChildrenCallback lpEnumFunc, HandleRef lParam); private delegate bool EnumThreadWindowsCallback(IntPtr hWnd, IntPtr lParam); private delegate bool EnumChildrenCallback(IntPtr hwnd, IntPtr lParam); private bool EnumWindowsCallback(IntPtr handle, IntPtr extraParameter) { int num1 = GetWindowTextLength(new HandleRef(this, handle)) * 2; StringBuilder builder1 = new StringBuilder(num1); GetWindowText(new HandleRef(this, handle), builder1, builder1.Capacity); System.Console.WriteLine(string.Format("Wnd:{0} Title: {1}", handle, builder1.ToString())); Application.DoEvents(); listBox1.Items.Add(string.Format("Wnd:{0} Title: {1}", handle, builder1.ToString())); EnumChildWindows(new HandleRef(this, handle), new EnumChildrenCallback(EnumChildWindowsCallback), new HandleRef(null, IntPtr.Zero)); return true; } private bool EnumChildWindowsCallback(IntPtr handle, IntPtr lparam) { int num1 = GetWindowTextLength(new HandleRef(this, handle)) * 2; StringBuilder builder1 = new StringBuilder(num1); GetWindowText(new HandleRef(this, handle), builder1, builder1.Capacity); System.Console.WriteLine(string.Format("/tSubWnd:{0} Title: {1}", handle, builder1.ToString())); listBox1.Items.Add(string.Format("SubWnd:{0} Title: {1}", handle, builder1.ToString())); return true; } private void button1_Click_1(object sender, EventArgs e) { EnumThreadWindowsCallback callback1 = new EnumThreadWindowsCallback(this.EnumWindowsCallback); EnumWindows(callback1, IntPtr.Zero); } } }

在窗体上放置一个button和listBox1控件

 

EnumWindows 枚举顶级窗口，使用 EnumChildWindows 枚举子窗口，或者使用 EnumThreadWindows 枚举与某个线程关联的所有非子窗口是首选方法

 

如果是遍历某个窗口的所有控件则可以用FindWindow找到该窗口句柄,然后用EnumChildWindows 遍历它的所有控件,但是我发现有些

c#的第三方控件没有办法遍历出来,不知道是什么原因.

 

[DllImport("User32.dll",EntryPoint="FindWindow")] 
private static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

IntPtr handle = FindWindow(null, "手动匹配");
if (IsWindow(handle) > 0)
{
      bool a  = SetForegroundWindow(handle);    //使窗口获得焦点
      ShowWindow(handle,WS_SHOWMAXIMIZED); //最大化该窗口

}

 

private const int WS_SHOWNORMAL = 1;
private const int WS_SHOWMINIMIZED = 2;
private const int WS_SHOWMAXIMIZED = 3;