KaneAI - World’s First E2E Software Testing Agent.Signup for Private Beta 
How to use SendMessage method of FlaUI.Core.WindowsAPI.User32 class
Best FlaUI code snippet using FlaUI.Core.WindowsAPI.User32.SendMessage
MouseMessageSender.cs
Source:MouseMessageSender.cs 
...33 /// <param name="windowHandle">æ¥æ¶æ¶æ¯ççªå£å¥æ</param>34 /// <param name="wPram"></param>35 /// <param name="x">é¼ æ 横åæ </param>36 /// <param name="y">é¼ æ 纵åæ </param>37 public static void SendMessage(IntPtr windowHandle,uint windowsMessages, uint wParam, int x, int y)38 {39 var lParam = (IntPtr)((y << 16) | (x & 0xffff));40 User32.SendMessage(windowHandle, windowsMessages, new IntPtr(wParam), lParam);41 }42 /// <summary>43 /// åéé¼ æ å·¦é®æä¸äºä»¶æ¶æ¯44 /// </summary>45 /// <param name="windowHandle">æ¥æ¶æ¶æ¯ççªå£å¥æ</param>46 /// <param name="x">é¼ æ 横åæ </param>47 /// <param name="y">é¼ æ 纵åæ </param>48 public static void SendLeftDownMessage(IntPtr windowHandle,int x,int y)49 {50 var wParam = new IntPtr(MouseWParams.MK_LBUTTON);51 var lParam= (IntPtr)((y << 16) | (x & 0xffff));52 User32.SendMessage(windowHandle, WindowsMessages.WM_LBUTTONDOWN, wParam, lParam);53 }54 /// <summary>55 /// åéé¼ æ å·¦é®æä¸äºä»¶æ¶æ¯56 /// </summary>57 /// <param name="windowHandle">æ¥æ¶æ¶æ¯ççªå£å¥æ</param>58 /// <param name="point">é¼ æ åæ ä½ç½®</param>59 public static void SendLeftDownMessage(IntPtr windowHandle, Point point)60 {61 SendLeftDownMessage(windowHandle,point.X, point.Y);62 }63 /// <summary>64 /// åéé¼ æ åå»äºä»¶æ¶æ¯65 /// </summary>66 /// <param name="windowHandle">æ¥æ¶æ¶æ¯ççªå£å¥æ</param>67 /// <param name="x">é¼ æ 横åæ </param>68 /// <param name="y">é¼ æ 纵åæ </param>69 public static void SendSingleClickMessage(IntPtr windowHandle, int x,int y)70 {71 SendLeftDownMessage(windowHandle,x,y );72 var lParam = (IntPtr)((y << 16) | (x & 0xffff));73 User32.SendMessage(windowHandle, WindowsMessages.WM_LBUTTONDOWN, IntPtr.Zero, lParam);74 }75 #endregion76 #region UiElementåç§ç¹å»æ±æ»77 public static void Move(IntPtr windowHandle, Point point, MouseButton mouseButton)78 {79 var windowMessage = WindowsMessages.WM_MOUSEMOVE;80 uint wParam;81 switch (mouseButton)82 {83 case MouseButton.Left:84 wParam = MouseWParams.MK_LBUTTON;85 break;86 case MouseButton.Middle:87 wParam = MouseWParams.MK_MBUTTON;...
Spinner.cs
Source:Spinner.cs
...61 IntPtr hwndEdit = Win32Fallback.GetSpinnerEditWindow(this);62 if (hwndEdit != IntPtr.Zero)63 {64 //get window text65 IntPtr textLengthPtr = User32.SendMessage(hwndEdit,66 WindowsMessages.WM_GETTEXTLENGTH, IntPtr.Zero, IntPtr.Zero);67 string windowText = string.Empty;68 if (textLengthPtr.ToInt32() > 0)69 {70 int textLength = textLengthPtr.ToInt32() + 1;71 StringBuilder text = new StringBuilder(textLength);72 User32.SendMessage(hwndEdit, WindowsMessages.WM_GETTEXT, textLength, text);73 windowText = text.ToString();74 }75 double valueDouble = 0.0;76 if (double.TryParse(windowText, out valueDouble) == true)77 {78 return valueDouble;79 }80 }81 }82 else // UIA383 {84 var edit = FindFirstChild(cf => cf.ByControlType(ControlType.Edit)).AsTextBox();85 if (edit != null)86 {87 double valueDouble = 0.0;88 if (double.TryParse(edit.Text, out valueDouble) == true)89 {90 return valueDouble;91 }92 }93 }94 }95 else if (FrameworkType == FrameworkType.Win32 && AutomationType == AutomationType.UIA3)96 {97 if (ControlType == ControlType.Spinner)98 {99 SetForeground();100 // take the edit control at the left of spinner101 Point pt = new Point(BoundingRectangle.Left - 5, (BoundingRectangle.Top + BoundingRectangle.Bottom) / 2);102 var edit = FrameworkAutomationElement.Automation.FromPoint(pt).AsTextBox();103 return Convert.ToDouble(edit.Text);104 }105 }106 return IsOnlyValue ? Convert.ToDouble(ValuePattern.Value.Value) : RangeValuePattern.Value.Value;107 }108 set109 {110 if (FrameworkType == FrameworkType.WinForms)111 {112 if (AutomationType == AutomationType.UIA2)113 {114 IntPtr hwndEdit = Win32Fallback.GetSpinnerEditWindow(this);115 if (hwndEdit != IntPtr.Zero)116 {117 // set spinner value118 IntPtr textPtr = Marshal.StringToBSTR(value.ToString(CultureInfo.InvariantCulture));119 if (textPtr != IntPtr.Zero)120 {121 User32.SendMessage(hwndEdit, WindowsMessages.WM_SETTEXT, IntPtr.Zero, textPtr);122 return;123 }124 }125 }126 else // UIA3127 {128 var edit = FindFirstChild(cf => cf.ByControlType(ControlType.Edit)).AsTextBox();129 if (edit != null)130 {131 edit.Text = value.ToString(CultureInfo.InvariantCulture);132 return;133 }134 }135 }...
User32.cs
Source:User32.cs
...33 public static extern int GetSystemMetrics(SystemMetric nIndex);34 [DllImport("user32.dll", SetLastError = true)]35 public static extern IntPtr GetMessageExtraInfo();36 [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]37 public static extern IntPtr SendMessageTimeout(IntPtr hWnd, uint msg, UIntPtr wParam, IntPtr lParam, SendMessageTimeoutFlags fuFlags, uint uTimeout, out UIntPtr lpdwResult);38 [DllImport("user32.dll", CharSet = CharSet.Auto)]39 public static extern IntPtr SendMessage(IntPtr hWnd, UInt32 Msg, IntPtr wParam, IntPtr lParam);40 [DllImport("user32.dll", EntryPoint = "SendMessage", CharSet = CharSet.Auto)]41 public static extern bool SendMessage(IntPtr hWnd, uint Msg, int wParam, StringBuilder lParam);42 [DllImport("user32.dll", SetLastError = true)]43 public static extern uint SendInput(uint nInputs, [MarshalAs(UnmanagedType.LPArray), In] INPUT[] pInputs, int cbSize);44 [DllImport("user32.dll", CharSet = CharSet.Unicode, SetLastError = true)]45 public static extern short VkKeyScan(char ch);46 [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true, CallingConvention = CallingConvention.Winapi)]47 public static extern short GetKeyState(int keyCode);48 [DllImport("user32.dll")]49 public static extern bool GetCursorInfo(out CURSORINFO pci);50 [DllImport("user32.dll")]51 public static extern bool DrawIcon(IntPtr hDC, int x, int y, IntPtr hIcon);52 [DllImport("user32.dll", SetLastError = true)]53 public static extern bool DrawIconEx(IntPtr hdc, int xLeft, int yTop, IntPtr hIcon, int cxWidth, int cyHeight, int istepIfAniCur, IntPtr hbrFlickerFreeDraw, int diFlags);54 [DllImport("user32.dll", EntryPoint = "CopyIcon")]55 public static extern IntPtr CopyIcon(IntPtr hIcon);...
SendMessage
Using AI Code Generation
1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using FlaUI.Core.WindowsAPI;7{8 {9 static void Main(string[] args)10 {11 User32.SendMessage(IntPtr.Zero, 0, 0, 0);12 }13 }14}15using System;16using System.Collections.Generic;17using System.Linq;18using System.Text;19using System.Threading.Tasks;20using FlaUI.Core.WindowsAPI;21using System.Runtime.InteropServices;22{23 {24 static void Main(string[] args)25 {26 User32.SendMessage(IntPtr.Zero, 0, 0, 0);27 }28 }29}30using System;31using System.Collections.Generic;32using System.Linq;33using System.Text;34using System.Threading.Tasks;35using FlaUI.Core.WindowsAPI;36using System.Runtime.InteropServices;37{38 {39 static void Main(string[] args)40 {41 User32.SendMessage(IntPtr.Zero, 0, 0, 0);42 }43 }44}45using System;46using System.Collections.Generic;47using System.Linq;48using System.Text;49using System.Threading.Tasks;50using FlaUI.Core.WindowsAPI;51using System.Runtime.InteropServices;52{53 {54 static void Main(string[] args)55 {56 User32.SendMessage(IntPtr.Zero, 0, 0, 0);57 }58 }59}60using System;61using System.Collections.Generic;62using System.Linq;63using System.Text;64using System.Threading.Tasks;65using FlaUI.Core.WindowsAPI;66using System.Runtime.InteropServices;67{68 {69 static void Main(string[] args)70 {71 User32.SendMessage(IntPtr.Zero, 0, 0, 0);72 }73 }74}75using System;76using System.Collections.Generic;
SendMessage
Using AI Code Generation
1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using FlaUI.Core.WindowsAPI;7{8 {9 static void Main(string[] args)10 {11 var window = FlaUI.Core.Application.GetWindows().FirstOrDefault();12 User32.SendMessage(window.NativeWindowHandle, User32.WM_KEYDOWN, (IntPtr)User32.VK_F5, IntPtr.Zero);13 }14 }15}
SendMessage
Using AI Code Generation
1using FlaUI.Core.WindowsAPI;2using System;3using System.Diagnostics;4using System.Runtime.InteropServices;5using System.Windows.Forms;6{7 {8 public Form1()9 {10 InitializeComponent();11 }12 private void button1_Click(object sender, EventArgs e)13 {14 Process[] procs = Process.GetProcessesByName("notepad");15 if (procs.Length > 0)16 {17 IntPtr hWnd = procs[0].MainWindowHandle;18 User32.SendMessage(hWnd, User32.WM_SETTEXT, IntPtr.Zero, "Hello World");19 }20 }21 }22}23using FlaUI.Core.WindowsAPI;24using System;25using System.Diagnostics;26using System.Runtime.InteropServices;27using System.Windows.Forms;28{29 {30 public Form1()31 {32 InitializeComponent();33 }34 private void button1_Click(object sender, EventArgs e)35 {36 Process[] procs = Process.GetProcessesByName("notepad");37 if (procs.Length > 0)38 {39 IntPtr hWnd = procs[0].MainWindowHandle;40 User32.PostMessage(hWnd, User32.WM_SETTEXT, IntPtr.Zero, "Hello World");41 }42 }43 }44}45using FlaUI.Core.WindowsAPI;46using System;47using System.Diagnostics;48using System.Runtime.InteropServices;49using System.Windows.Forms;50{51 {52 public Form1()53 {54 InitializeComponent();55 }56 private void button1_Click(object sender, EventArgs e)57 {58 Process[] procs = Process.GetProcessesByName("notepad");59 if (procs.Length > 0)60 {61 IntPtr hWnd = procs[0].MainWindowHandle;62 SendKeys.SendWait("Hello World");63 }64 }65 }66}67using FlaUI.Core.WindowsAPI;68using System;69using System.Diagnostics;70using System.Runtime.InteropServices;71using System.Windows.Forms;72{73 {
SendMessage
Using AI Code Generation
1using FlaUI.Core.WindowsAPI;2{3 {4 public static int SendMessage(IntPtr hWnd, int msg, int wParam, int lParam)5 {6 return SendMessage(hWnd, msg, wParam, lParam);7 }8 }9}10using FlaUI.Core;11using FlaUI.Core.AutomationElements;12using FlaUI.Core.WindowsAPI;13{14 {15 public static void SendMessage(this AutomationElement element, int message, int wParam, int lParam)16 {17 User32.SendMessage(element.NativeWindowHandle, message, wParam, lParam);18 }19 }20}21using FlaUI.Core;22using FlaUI.Core.WindowsAPI;23using System;24using System.Diagnostics;25using System.Runtime.InteropServices;26using System.Windows.Forms;27{28 {29 public static void SendMessage(this AutomationElement element, int message, int wParam, int lParam)30 {31 User32.SendMessage(element.NativeWindowHandle, message, wParam, lParam);32 }33 }34}35using FlaUI.Core;36using FlaUI.Core.WindowsAPI;37using System;38using System.Diagnostics;39using System.Runtime.InteropServices;40using System.Windows.Forms;41{42 {43 public static void SendMessage(this AutomationElement element, int message, int wParam, int lParam)44 {45 User32.SendMessage(element.NativeWindowHandle, message, wParam, lParam);46 }47 }48}49using FlaUI.Core;50using FlaUI.Core.WindowsAPI;51using System;52using System.Diagnostics;53using System.Runtime.InteropServices;54using System.Windows.Forms;55{56 {57 public static void SendMessage(this AutomationElement element, int message, int wParam, int lParam)58 {59 User32.SendMessage(element.NativeWindowHandle, message, wParam, lParam);60 }61 }62}63using FlaUI.Core;64using FlaUI.Core.WindowsAPI;65using System;66using System.Diagnostics;67using System.Runtime.InteropServices;68using System.Windows.Forms;69{70 {71 public static void SendMessage(this AutomationElement element, int message, int wParam, int lParam)72 {73 User32.SendMessage(element.NativeWindowHandle,
SendMessage
Using AI Code Generation
1using System;2using FlaUI.Core.WindowsAPI;3{4 {5 static void Main(string[] args)6 {7 User32.SendMessage(IntPtr.Zero, 0x0000, IntPtr.Zero, IntPtr.Zero);8 }9 }10}11C:\Users\user\Desktop\FlaUI\2.cs(10,13): error CS1061: 'IntPtr' does not contain a definition for 'SendMessage' and no accessible extension method 'SendMessage' accepting a first argument of type 'IntPtr' could be found (are you missing a using directive or an assembly reference?)12C:\Users\user\Desktop\FlaUI\2.cs(10,13): error CS1503: Argument 1: cannot convert from 'int' to 'IntPtr'13C:\Users\user\Desktop\FlaUI\2.cs(10,13): error CS1503: Argument 2: cannot convert from 'int' to 'IntPtr'14C:\Users\user\Desktop\FlaUI\2.cs(10,13): error CS1503: Argument 3: cannot convert from 'int' to 'IntPtr'15C:\Users\user\Desktop\FlaUI\2.cs(10,13): error CS1503: Argument 4: cannot convert from 'int' to 'IntPtr'16Compilation failed: 5 error(s), 0 warnings
SendMessage
Using AI Code Generation
1using System;2using FlaUI.Core.WindowsAPI;3{4 {5 public static void Main(string[] args)6 {7 IntPtr hWnd = User32.FindWindow(null, "FindWindow");8 User32.SendMessage(hWnd, WindowsMessages.WM_CLOSE, IntPtr.Zero, IntPtr.Zero);9 Console.WriteLine("Message sent successfully");10 Console.ReadLine();11 }12 }13}
SendMessage
Using AI Code Generation
1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using FlaUI.Core.WindowsAPI;7{8 {9 static void Main(string[] args)10 {11 var app = FlaUI.Core.Application.Launch("notepad.exe");12 var window = app.GetMainWindow(FlaUI.Core.WindowsAPI.WindowEnumerationTimeout.Default);13 var button = window.FindFirstDescendant(FlaUI.Core.Conditions.ByAutomationId("1001"));14 User32.SendMessage(button.NativeWindowHandle, User32.WM_LBUTTONDOWN, 0, 0);15 User32.SendMessage(button.NativeWindowHandle, User32.WM_LBUTTONUP, 0, 0);16 System.Threading.Thread.Sleep(1000);17 app.Close();18 }19 }20}
SendMessage
Using AI Code Generation
1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using FlaUI.Core.WindowsAPI;7using System.Windows.Forms;8using System.Threading;9{10 {11 static void Main(string[] args)12 {13 Form1 form = new Form1();14 form.ShowDialog();15 IntPtr hWnd = form.Handle;16 User32.SendMessage(hWnd, User32.WM_CLOSE, IntPtr.Zero, IntPtr.Zero);17 Thread.Sleep(1000);18 Environment.Exit(0);19 }20 }21}22using System;23using System.Collections.Generic;24using System.Linq;25using System.Text;26using System.Threading.Tasks;27using FlaUI.Core.WindowsAPI;28using System.Windows.Forms;29using System.Threading;30{31 {32 static void Main(string[] args)33 {34 Form1 form = new Form1();35 form.ShowDialog();36 IntPtr hWnd = form.Handle;37 User32.SendMessage(hWnd, User32.WM_CLOSE, IntPtr.Zero, IntPtr.Zero);38 Thread.Sleep(1000);39 Environment.Exit(0);40 }41 }42}43using System;44using System.Collections.Generic;45using System.Linq;46using System.Text;47using System.Threading.Tasks;48using FlaUI.Core.WindowsAPI;49using System.Windows.Forms;50using System.Threading;51{52 {53 static void Main(string[] args
SendMessage
Using AI Code Generation
1var window = FlaUI.Core.Application.GetMainWindow(AutomationType.UIA3);2window.SendMessage(0x0112, 0xF170, 0x00000002);3var window = FlaUI.Core.Application.GetMainWindow(AutomationType.UIA3);4var user32 = new FlaUI.Core.WindowsAPI.User32();5user32.PostMessage(window.NativeWindowHandle, 0x0112, 0xF170, 0x00000002);6var window = FlaUI.Core.Application.GetMainWindow(AutomationType.UIA3);7var user32 = new FlaUI.Core.WindowsAPI.User32();8user32.SendMessage(window.NativeWindowHandle, 0x0112, 0xF170, 0x00000002);9var window = FlaUI.Core.Application.GetMainWindow(AutomationType.UIA3);10var user32 = new FlaUI.Core.WindowsAPI.User32();11user32.SendMessageTimeout(window.NativeWindowHandle, 0x0112, 0xF170, 0x00000002, 0, 1000, out var result);12var window = FlaUI.Core.Application.GetMainWindow(AutomationType.UIA3);13var user32 = new FlaUI.Core.WindowsAPI.User32();14user32.SendMessageTimeout(window.NativeWindowHandle, 0x0112, 0xF170, 0x00000002, 0, 1000, out var result);15var window = FlaUI.Core.Application.GetMainWindow(AutomationType.UIA3);16var user32 = new FlaUI.Core.WindowsAPI.User32();17user32.SendMessageTimeout(window.NativeWindowHandle, 0x0112, 0xF170, 0x00000002, 0, 1000, out var result);18var window = FlaUI.Core.Application.GetMainWindow(AutomationType.UIA3);
Automation Testing Tutorials
Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.
LambdaTest Learning Hubs:
- JUnit Tutorial
- TestNG Tutorial
- Webdriver Tutorial
- WebDriverIO Tutorial
- Protractor Tutorial
- Selenium 4 Tutorial
- Jenkins Tutorial
- NUnit Tutorial
- Jest Tutorial
- Playwright Tutorial
- Cypress Tutorial
- PyTest Tutorial
YouTube
You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.
Run FlaUI automation tests on LambdaTest cloud grid
Perform automation testing on 3000+ real desktop and mobile devices online.
Most used method in User32
- GetWindowLong
- SetWindowLong
- SetWindowPos
- SetForegroundWindow
- SetFocus
- SetLayeredWindowAttributes
- GetCursorPos
- SetCursorPos
- GetDoubleClickTime
- GetSystemMetrics
- GetMessageExtraInfo
- SendMessageTimeout
- SendMessage
- SendInput
- VkKeyScan
- GetKeyState
- GetCursorInfo
- DrawIcon
- DrawIconEx
- CopyIcon
- DestroyIcon
- GetIconInfo
- ReleaseDC
- GetDesktopWindow
- GetWindowDC
- EnumDisplayMonitors
- GetMonitorInfo
- GetWindowThreadProcessId
- AttachThreadInput
- GetClassName
- FindWindowEx
- InitializeTouchInjection
- InjectTouchInput
- OpenProcess
- VirtualAllocEx
- ReadProcessMemory
- VirtualFreeEx
- CloseHandle
- WriteProcessMemory
Try LambdaTest Now !!
Get 100 minutes of automation test minutes FREE!!
Was this article helpful?
