From c09877afedbfd50d2c7ab5d9fa0a66750a3b2f17 Mon Sep 17 00:00:00 2001 From: "ray.zh" Date: Fri, 20 Dec 2024 17:00:47 +0800 Subject: [PATCH] =?UTF-8?q?Create=202024-12-20-c#=20Win32APi=20SendMessage?= =?UTF-8?q?=20=E5=8F=91=E9=80=81=E5=AD=97=E7=AC=A6=E4=B8=B2=E5=88=B0?= =?UTF-8?q?=E5=85=B6=E4=BB=96=E5=BA=94=E7=94=A8=E8=BE=93=E5=85=A5=E6=A1=86?= =?UTF-8?q?.md?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- ...50\350\276\223\345\205\245\346\241\206.md" | 239 ++++++++++++++++++ 1 file changed, 239 insertions(+) create mode 100644 "_posts/2024-12-20-c# Win32APi SendMessage \345\217\221\351\200\201\345\255\227\347\254\246\344\270\262\345\210\260\345\205\266\344\273\226\345\272\224\347\224\250\350\276\223\345\205\245\346\241\206.md" diff --git "a/_posts/2024-12-20-c# Win32APi SendMessage \345\217\221\351\200\201\345\255\227\347\254\246\344\270\262\345\210\260\345\205\266\344\273\226\345\272\224\347\224\250\350\276\223\345\205\245\346\241\206.md" "b/_posts/2024-12-20-c# Win32APi SendMessage \345\217\221\351\200\201\345\255\227\347\254\246\344\270\262\345\210\260\345\205\266\344\273\226\345\272\224\347\224\250\350\276\223\345\205\245\346\241\206.md" new file mode 100644 index 0000000..3daf33e --- /dev/null +++ "b/_posts/2024-12-20-c# Win32APi SendMessage \345\217\221\351\200\201\345\255\227\347\254\246\344\270\262\345\210\260\345\205\266\344\273\226\345\272\224\347\224\250\350\276\223\345\205\245\346\241\206.md" @@ -0,0 +1,239 @@ +--- +layout: post +title: "c# Win32APi SendMessage 发送字符串到其他应用输入框" +date: 2024-12-20 10:29:20 +0800 +categories: + - c# + - win32api +tags: + - SendMessage + - SendTextMessage +--- + +主要是留作记录，今天突然有操作windows窗体程序的需求。 需要自动化输入和点击，方便应用操作。 + +这里记录了如何查找并发送文本到其他应用输入框, 这里重点查看onclick事件中的逻辑。 + +首先找到应用窗口，然后遍历并保存所有子窗口。最后调用函数发送即可。 实测密码框也可以发送成功。 + + +```c# +using System.Diagnostics; +using System.Runtime.InteropServices; +using System.Text; +using static System.Net.Mime.MediaTypeNames; + +namespace testdemo +{ + public partial class Form1 : Form + { + public Form1() + { + InitializeComponent(); + } + private List hwnds = new List(); + + private void button1_Click(object sender, EventArgs e) + { + + const uint WM_KEYDOWN = 0x100; + + int hwnd1 = 0; + int hwndbtn = 0; + int hwndtxt = 0; + int hwnm1 = 0; + int hwnm2 = 0; + // 查找窗口 + hwnd1 = FindWindow("WindowsForms10.Window.8.app.0.19fd5c7_r3_ad1", "Form1aaaee"); + //hwnd1 = FindWindow("WindowsForms10.Window.8.app.0.1e09f85_r7_ad1", "AreaCity Geo格式转换工具 Ver:1.3.240505"); + Console.WriteLine("============"); + + //遍历所有子窗口并保存 + EnumWindowProc childProc = new EnumWindowProc(enumWindowProca); + EnumChildWindows(hwnd1, childProc, IntPtr.Zero); + + // 发送字符串到指定输入框消息 + SendTextMessage(hwnds[0], WM_SETTEXT, 0, UnicodeEncoding.Unicode.GetBytes("ha啊我")); + + + + } + private bool enumWindowProca(IntPtr hwnd, IntPtr lParam) { + StringBuilder s = new StringBuilder(); + GetClassName(hwnd, s, 100); + Console.WriteLine(s.ToString()) ; + Debug.WriteLine(s.ToString()); + if (s.ToString().Equals("WindowsForms10.Edit.app.0.19fd5c7_r3_ad1")) { + hwnds.Add(hwnd); + } + + return true; + } + [DllImport("user32")] + private static extern int GetWindowText(IntPtr hWnd, StringBuilder lptrString, int nMaxCount); + [DllImport("user32")] + private static extern int GetClassName(IntPtr hWnd, StringBuilder lptrString, int nMaxCount); + + private delegate bool EnumWindowProc(IntPtr hwnd, IntPtr lParam); + + [DllImport("user32")] + [return: MarshalAs(UnmanagedType.Bool)] + private static extern bool EnumChildWindows(int window, EnumWindowProc callback, IntPtr lParam); + + + + [DllImport("user32.dll", EntryPoint = "SendMessage", CharSet = CharSet.Auto)] + private static extern int SendTextMessage(IntPtr hWnd, uint Msg, int wParam, byte[] lParam); + + + // int hwnd; //窗口句柄 + // int process;//进程句柄 + private const uint LVM_FIRST = 0x1000; + private const uint LVM_SETSELECTEDCOLUMN = LVM_FIRST + 140; + + private const uint LVM_GETHEADER = LVM_FIRST + 31; + private const uint LVM_SETSELECTIONMARK = LVM_FIRST + 67; + private const uint LVM_SETITEMSTATE = LVM_FIRST + 43; + + + private const uint LVM_GETITEMCOUNT = LVM_FIRST + 4;//获取列表行数 + private const uint LVM_GETITEMTEXT = LVM_FIRST + 45;//获取列表内的内容 + private const uint LVM_GETITEMW = LVM_FIRST + 75; + + private const uint HDM_GETITEMCOUNT = 0x1200;//获取列表列数 + + private const uint PROCESS_VM_OPERATION = 0x0008;//允许函数VirtualProtectEx使用此句柄修改进程的虚拟内存 + private const uint PROCESS_VM_READ = 0x0010;//允许函数访问权限 + private const uint PROCESS_VM_WRITE = 0x0020;//允许函数写入权限 + + private const uint MEM_COMMIT = 0x1000;//为特定的页面区域分配内存中或磁盘的页面文件中的物理存储 + private const uint MEM_RELEASE = 0x8000; + private const uint MEM_RESERVE = 0x2000;//保留进程的虚拟地址空间,而不分配任何物理存储 + + private const uint PAGE_READWRITE = 4; + + private int LVIF_TEXT = 0x0001; + private int LVIF_STATE = 0x0008; + + + [DllImport("user32.dll")]//查找窗口 + private static extern int FindWindow( + string strClassName, //窗口类名 + string strWindowName //窗口标题 + ); + + [DllImport("user32.dll")]//在窗口列表中寻找与指定条件相符的第一个子窗口 + private static extern int FindWindowEx( + int hwndParent, // handle to parent window +　　 int hwndChildAfter, // handle to child window + string className, //窗口类名 + string windowName // 窗口标题 + ); + + + [DllImport("user32.dll")]//在窗口列表中寻找与指定条件相符的第一个子窗口 + private static extern int FindWindowExW( + int hwndParent, // handle to parent window +　　 int hwndChildAfter, // handle to child window + string className, //窗口类名 + string windowName // 窗口标题 + ); + [DllImport("user32.DLL", EntryPoint = "SendMessage", SetLastError = true)] + private static extern int SendMessage0(int hWnd, uint Msg, int wParam, StringBuilder lParam); + + [DllImport("user32.DLL", SetLastError = true, CharSet = CharSet.Unicode)] + private static extern int SendMessage(int hWnd, uint Msg, int wParam, IntPtr lParam); + + [DllImport("user32.dll", EntryPoint = "SendMessage", CharSet = CharSet.Auto)] + private static extern int SendMessageFindItem(int hWnd, uint Msg, int wParam, ref tagLVFINDINFOA lParam); + + [DllImport("user32.DLL")] + private static extern int SendMessageKey(int hWnd, uint Msg, IntPtr wParam, IntPtr lParam); + + private struct tagPoint //结构体 + { + public uint x; + public uint y; + + } + + + /// + /// LVITEM结构体,是列表视图控件的一个重要的数据结构 + /// 占空间：4(int)x7=28个byte + /// + private struct tagLVFINDINFOA //结构体 + { + public uint flag; + public IntPtr psz; + + } + + [DllImport("user32.dll")]//找出某个窗口的创建者(线程或进程),返回创建者的标志符 + private static extern int GetWindowThreadProcessId(int hwnd, out int processId); + [DllImport("kernel32.dll")]//打开一个已存在的进程对象,并返回进程的句柄 + private static extern int OpenProcess(uint dwDesiredAccess, bool bInheritHandle, int processId); + [DllImport("kernel32.dll")]//为指定的进程分配内存地址:成功则返回分配内存的首地址 + private static extern IntPtr VirtualAllocEx(int hProcess, IntPtr lpAddress, uint dwSize, uint flAllocationType, uint flProtect); + [DllImport("kernel32.dll")]//从指定内存中读取字节集数据 + private static extern bool ReadProcessMemory( + int hProcess, //被读取者的进程句柄 + IntPtr lpBaseAddress,//开始读取的内存地址 + IntPtr lpBuffer, //数据存储变量 + int nSize, //要写入多少字节 + ref uint vNumberOfBytesRead//读取长度 + ); + [DllImport("kernel32.dll")]//将数据写入内存中 + private static extern bool WriteProcessMemory( + int hProcess,//由OpenProcess返回的进程句柄 + IntPtr lpBaseAddress, //要写的内存首地址,再写入之前,此函数将先检查目标地址是否可用,并能容纳待写入的数据 + IntPtr lpBuffer, //指向要写的数据的指针 + int nSize, //要写入的字节数 + ref uint vNumberOfBytesRead + ); + [DllImport("kernel32.dll")] + private static extern bool CloseHandle(int handle); + [DllImport("kernel32.dll")]//在其它进程中释放申请的虚拟内存空间 + private static extern bool VirtualFreeEx( + int hProcess,//目标进程的句柄,该句柄必须拥有PROCESS_VM_OPERATION的权限 + IntPtr lpAddress,//指向要释放的虚拟内存空间首地址的指针 + uint dwSize, + uint dwFreeType//释放类型 + ); + + + + /// + /// LVITEM结构体,是列表视图控件的一个重要的数据结构 + /// 占空间：4(int)x7=28个byte + /// + private struct LVITEM //结构体 + { + public int mask;//说明此结构中哪些成员是有效的 + public int iItem;//项目的索引值(可以视为行号)从0开始 + public int iSubItem; //子项的索引值(可以视为列号)从0开始 + public int state;//子项的状态 + public int stateMask; //状态有效的屏蔽位 + public int pszText; //主项或子项的名称 + public int cchTextMax;//pszText所指向的缓冲区大小 + } + + + + + public struct COPYDATASTRUCT + { + public IntPtr dwData; //可以是任意值 + public int cbData; //指定lpData内存区域的字节数 + [MarshalAs(UnmanagedType.LPStr)] + public string lpData; //发送给目录窗口所在进程的数据 + } + + const uint WM_SETTEXT = 0x000C; + + const int BM_CLICK = 0xF5; + } + + +} +```