如何在程序中操作另外的程序？

谢谢，执行没有问题，但向b中的textbox输入信息确实最大的问题！在我发贴前就已经能够启动B了！

B 是你写的程序吗？是 .Net的吗?

TO:bugfree(八个飞飞之五角大楼)
B程序是我们自己写的程序，是C#的.
谢谢关注！

//用SendMessage with WM_COPYDATA
//---------------------
// SendMsg.cs
// By BugFree
//---------------------
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Runtime.InteropServices;namespace WinFormSendMsg
{
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.Button button1;
private System.ComponentModel.Container components = null;
const int WM_COPYDATA = 0x004A;
public Form1()
{
InitializeComponent();
} protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
} #region Windows Form Designer generated code
/// <summary>
/// Éè¼ÆÆ÷Ö§³ÖËùÐèµÄ·½·¨ - ²»ÒªÊ¹ÓÃ´úÂë±à¼Æ÷ÐÞ¸Ä
/// ´Ë·½·¨µÄÄÚÈÝ¡£
/// </summary>
private void InitializeComponent()
{
this.textBox1 = new System.Windows.Forms.TextBox();
this.button1 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(184, 24);
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(128, 21);
this.textBox1.TabIndex = 0;
this.textBox1.Text = "textBox1";
//
// button1
//
this.button1.Location = new System.Drawing.Point(344, 16);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(112, 32);
this.button1.TabIndex = 1;
this.button1.Text = "button1";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(536, 142);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
  this.button1,
  this.textBox1});
this.Name = "Form1";
this.Text = "·¢ËÍ·½";
this.ResumeLayout(false); }
#endregion /// <summary>
/// Ó¦ÓÃ³ÌÐòµÄÖ÷Èë¿Úµã¡£
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
} [DllImport("User32.dll",EntryPoint="SendMessage")]
private static extern int SendMessage(
int hWnd, // handle to destination window
int Msg, // message
int wParam, // first message parameter
ref COPYDATASTRUCT lParam // second message parameter
);
[DllImport("User32.dll",EntryPoint="FindWindow")]
private static extern int FindWindow(string lpClassName,string
lpWindowName);
private void button1_Click(object sender, System.EventArgs e)
{
//·¢ËÍÏûÏ¢
int WINDOW_HANDLER = FindWindow(null,@"½ÓÊÕ·½"); if(WINDOW_HANDLER == 0)
{
//
}
else
{
byte[] sarr = System.Text.Encoding.Default.GetBytes(this.textBox1.Text);
int len = sarr.Length; COPYDATASTRUCT cds;
cds.dwData = (IntPtr) 100;
cds.lpData = this.textBox1.Text;
cds.cbData = len + 1;
SendMessage(WINDOW_HANDLER, WM_COPYDATA, 0, ref cds);

} }
}
[StructLayout(LayoutKind.Sequential)]
public struct COPYDATASTRUCT
{
public IntPtr dwData;
public int cbData;
[MarshalAs(UnmanagedType.LPStr)] public string lpData;
}
}//------------------------
// GetMsg.cs
//-------------------------using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Runtime.InteropServices;namespace WindowsFormGetMsg
{

public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.TextBox textBox1;
private System.ComponentModel.Container components = null;
const int WM_COPYDATA = 0x004A; public Form1()
{
InitializeComponent();
} protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
} #region Windows Form Designer generated code
/// <summary>
/// Éè¼ÆÆ÷Ö§³ÖËùÐèµÄ·½·¨ - ²»ÒªÊ¹ÓÃ´úÂë±à¼Æ÷ÐÞ¸Ä
/// ´Ë·½·¨µÄÄÚÈÝ¡£
/// </summary>
private void InitializeComponent()
{
this.textBox1 = new System.Windows.Forms.TextBox();
this.SuspendLayout();
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(176, 32);
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(160, 21);
this.textBox1.TabIndex = 0;
this.textBox1.Text = "textBox1";
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(432, 266);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
  this.textBox1});
this.Name = "Form1";
this.Text = "½ÓÊÕ·½";
this.ResumeLayout(false); }
#endregion /// <summary>
/// Ó¦ÓÃ³ÌÐòµÄÖ÷Èë¿Úµã¡£
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
} protected override void DefWndProc(ref System.Windows.Forms.Message m)
{
switch(m.Msg)
{
//½ÓÊÕ×Ô¶¨ÒåÏûÏ¢ USER£¬²¢ÏÔÊ¾Æä²ÎÊý
case WM_COPYDATA:
COPYDATASTRUCT mystr = new COPYDATASTRUCT();
¡¡¡¡¡¡ Type mytype = mystr.GetType();¡¡¡¡¡¡ mystr =(COPYDATASTRUCT)m.GetLParam(mytype);
this.textBox1.Text  =mystr.lpData; break;
default:
base.DefWndProc(ref m);
break; } } }
[StructLayout(LayoutKind.Sequential)]
public struct COPYDATASTRUCT
{
public IntPtr dwData;
public int cbData;
[MarshalAs(UnmanagedType.LPStr)] public string lpData;
}
}//具体的东西，参考MSDN, keyword : sendmessage, WM_COPYDATA

调试易

如何在程序中操作另外的程序？

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