如何从不同的程序中读取另一个窗口

我尝试使用findwindow和process但它不起作用，我怎样才能找到一个特定的按钮？

例如，我有按钮类AfxWnd90u和instance 21 。 我想检查这个按钮是否可见。 我尝试使用此代码，但我找不到按钮。 我想我对这个实例犯了一个错误。

之间我没有在这里使用findwindow ，因为我进行了一些实验。

 //////IMPORTANT///////////// System.Diagnostics.Process[] move = System.Diagnostics.Process.GetProcessesByName("PartyGaming"); ArrayList save = new ArrayList(); RECT rct = new RECT(); listBox1.Items.Add(move.Length); List process = new List(); // use only the process with the button AfxWnd90u21 for (int i = 0; i < move.Length;++i ) { IntPtr hCheck = FindWindowEx(move[i].MainWindowHandle, IntPtr.Zero, "AfxWnd90u21", null); //if button is visible if (hCheck != IntPtr.Zero) process.Add(move[i]); //////IMPORTANT///////////// } 

Answer 1

我相信FindWindow和SendMessage Windows API函数的组合将为您提供所需的function。 棘手的部分是发现窗口类名称，但像WinSpy ++这样的东西可以帮助你。

以下是如何使用API​​的示例。 打开Notepad.exe几次，键入一些文本，然后运行此示例。

 using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Runtime.InteropServices; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { List windows = new List(); //find the "first" window IntPtr hWnd = FindWindow("notepad", null); while (hWnd != IntPtr.Zero) { //find the control window that has the text IntPtr hEdit = FindWindowEx(hWnd, IntPtr.Zero, "edit", null); //initialize the buffer. using a StringBuilder here System.Text.StringBuilder sb = new System.Text.StringBuilder(255); // or length from call with GETTEXTLENGTH //get the text from the child control int RetVal = SendMessage(hEdit, WM_GETTEXT, sb.Capacity, sb); windows.Add(new WinText() { hWnd = hWnd, Text = sb.ToString() }); //find the next window hWnd = FindWindowEx(IntPtr.Zero, hWnd, "notepad", null); } //do something clever windows.OrderBy(x => x.Text).ToList().ForEach(y => Console.Write("{0} = {1}\n", y.hWnd, y.Text)); Console.Write("\n\nFound {0} window(s).", windows.Count); Console.ReadKey(); } private struct WinText { public IntPtr hWnd; public string Text; } const int WM_GETTEXT = 0x0D; const int WM_GETTEXTLENGTH = 0x0E; [DllImport("user32.dll", SetLastError = true)] public static extern IntPtr FindWindow(string lpClassName, string lpWindowName); [DllImport("user32.dll", SetLastError = true)] public static extern int SendMessage(IntPtr hWnd, int msg, int Param, System.Text.StringBuilder text); [DllImport("user32.dll", SetLastError = true)] public static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow); } }