為什么我遇到異常使用SendMessage時找不到入口點？

Question

我正在嘗試向記事本窗口發送一些文本。

在form1的頂部：

const int WM_SETTEXT = 0X000C;

//include FindWindowEx
[DllImport("user32.dll")]
public static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);

//include SendMessage
[DllImport("user32.dll")]
public static extern int SendMessages(IntPtr hWnd, int uMsg, int wParam, string lParam);

然后在構造函數中：

//getting notepad's process | at least one instance of notepad must be running
Process notepadProccess = Process.GetProcessesByName("notepad")[0];

//getting notepad's textbox handle from the main window's handle
//the textbox is called 'Edit'
IntPtr notepadTextbox = FindWindowEx(notepadProccess.MainWindowHandle, IntPtr.Zero, "Edit", null);
//sending the message to the textbox
SendMessages(notepadTextbox, WM_SETTEXT, 0, "This is the new Text!!!");

唯一的例外是：

SendMessages(notepadTextbox, WM_SETTEXT, 0, "This is the new Text!!!");

exe中發生類型為'System.EntryPointNotFoundException'的未處理異常

附加信息：在DLL“ user32.dll”中找不到名為“ SendMessages”的入口點。

完整的異常消息：

System.EntryPointNotFoundException was unhandled
  HResult=-2146233053
  Message=Unable to find an entry point named 'SendMessages' in DLL 'user32.dll'.
  Source=Grads_Scripts
  TypeName=""
  StackTrace:
       at Grads_Scripts.Form1.SendMessages(IntPtr hWnd, Int32 uMsg, Int32 wParam, String lParam)
       at Grads_Scripts.Form1..ctor() in D:\C-Sharp\Form1.cs:line 142
       at Grads_Scripts.Program.Main() in D:\C-Sharp\Program.cs:line 19
       at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException: 

Answer 1

由於錯誤試圖告訴您，因此不存在此類功能。

您的意思是SendMessage 。