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ImageSearch UDF v3.5 - AutoIt Wrapper for ImageSearchDLL Advanced image search library for AutoIt with cache system and SIMD optimization. Overview ImageSearchDLL UDF is a high-performance image search library for AutoIt that enables you to find images on screen or within other images. Built with C++14 and optimized with SIMD instructions (AVX512/AVX2/SSE2), it provides fast and accurate image matching capabilities. Features High Performance: SIMD optimization (AVX512/AVX2/SSE2) for fast searching Multi-Monitor Support: Full support for multi-monitor setups with negative coordinates DPI Awareness: Thread-local DPI awareness without affecting AutoIt GUI Cache System: Persistent cache for 30-50% speed boost on repeated searches Image Scaling: Search for images at different scales (0.1x to 5.0x) Screen Capture: Direct screen capture with DPI-aware coordinates Mouse Automation: Precise mouse movement and clicking with multi-monitor support Requirements AutoIt: Version 3.3.16.1 or higher Windows: XP SP3 to Windows 11 Architecture: x86 or x64 (automatic detection) DLL: ImageSearchDLL v3.5 (included) Installation Download the UDF package Place ImageSearchDLL_UDF.au3 in your script directory Ensure the appropriate DLL is in the same directory: ImageSearchDLL_x64.dll for 64-bit AutoIt ImageSearchDLL_x86.dll for 32-bit AutoIt Not required in embedded version! (But need to install Visual C++ Redistributable 2015-2022) Include the UDF in your script: #include "ImageSearchDLL_UDF.au3" Quick Start Basic Image Search #include "ImageSearchDLL_UDF.au3" ; Search for a button on screen Local $aResult = _ImageSearch("button.png") If $aResult[0] > 0 Then ConsoleWrite("Found at: " & $aResult[1][0] & ", " & $aResult[1][1] & @CRLF) MouseClick("left", $aResult[1][0], $aResult[1][1]) Else ConsoleWrite("Image not found" & @CRLF) EndIf Wait for Image and Click ; Wait up to 5 seconds for button to appear, then click it If _ImageSearch_WaitClick(5000, "button.png") Then MsgBox(0, "Success", "Button clicked!") Else MsgBox(0, "Failed", "Button not found within 5 seconds") EndIf Screen Capture ; Capture a region and save as PNG _ImageSearch_ScreenCapture_SaveImage(@ScriptDir & "\screenshot.png", 100, 100, 600, 400) ; Capture full screen _ImageSearch_ScreenCapture_SaveImage(@ScriptDir & "\fullscreen.png") API Reference Startup & Configuration _ImageSearch_Startup() Initializes the ImageSearch library by loading the appropriate DLL. Returns: Success: 1 (DLL loaded successfully) Failure: 0 and sets @error Remarks: Must be called before using any search functions Automatically called on script start DLL v3.5+ uses thread-local DPI awareness and won't affect AutoIt GUI _ImageSearch_Shutdown() Closes the DLL and cleans up resources. _ImageSearch_SetDllPath($sPath) Sets a custom DLL path (must be called before _ImageSearch_Startup). Parameters: $sPath - Full path to the DLL file Returns: Success: 1 Failure: 0 (file not found) Core Search Functions _ImageSearch($sImagePath [, $iLeft, $iTop, $iRight, $iBottom [, $iScreen [, $iTolerance [, $iResults [, $iCenterPOS [, $fMinScale [, $fMaxScale [, $fScaleStep [, $iReturnDebug [, $iUseCache]]]]]]]]) Searches for an image within a specified screen area. Parameters: $sImagePath - Image file path(s), multiple separated by "|" $iLeft, $iTop, $iRight, $iBottom - Search region (0 = entire screen) $iScreen - Monitor index (-1 = virtual screen, 0 = primary, 1+ = specific monitor) $iTolerance - Color tolerance 0-255 (default: 10) $iResults - Max results 1-1024 (default: 1) $iCenterPOS - Return center (1) or top-left (0) coordinates (default: 1) $fMinScale, $fMaxScale - Scale range 0.1-5.0 (default: 1.0) $fScaleStep - Scale step (default: 0.1) $iReturnDebug - Debug mode (default: 0) $iUseCache - Enable cache (default: 1) Returns: Success: Array of found positions [count][X, Y, Width, Height] Failure: Empty array with @error set Example: ; Search for multiple images with scaling Local $aResult = _ImageSearch("icon1.png|icon2.png", 0, 0, 800, 600, -1, 10, 5, 1, 0.8, 1.2, 0.1) If $aResult[0] > 0 Then For $i = 1 To $aResult[0] ConsoleWrite("Match " & $i & " at: " & $aResult[$i][0] & ", " & $aResult[$i][1] & @CRLF) Next EndIf _ImageSearch_InImage($sSourceImage, $sTargetImage [, $iTolerance [, $iResults [, $iCenterPOS [, $fMinScale [, $fMaxScale [, $fScaleStep [, $iReturnDebug [, $iUseCache]]]]]]]]) Searches for a target image within a source image (file-to-file search). Parameters: $sSourceImage - Path to source image file $sTargetImage - Path to target image file(s), multiple separated by "|" Other parameters same as _ImageSearch Returns: Same as _ImageSearch Remarks: Useful for pre-processing images or testing without screen capture Example: $aResult = _ImageSearch_InImage("screenshot.png", "button.png", 20) _ImageSearch_hBitmap($hBitmapSource, $hBitmapTarget [, $iTolerance [, $iLeft [, $iTop [, $iRight [, $iBottom [, $iResults [, $iCenterPOS [, $fMinScale [, $fMaxScale [, $fScaleStep [, $iReturnDebug [, $iUseCache]]]]]]]]]]]]) Searches for a target bitmap within a source bitmap (memory-to-memory search). Parameters: $hBitmapSource - Handle to source bitmap (HBITMAP) $hBitmapTarget - Handle to target bitmap (HBITMAP) Other parameters same as _ImageSearch Returns: Same as _ImageSearch Remarks: Fastest method for repeated searches (no disk I/O) Bitmaps must be created with GDI/GDI+ functions Screen Capture Functions _ImageSearch_CaptureScreen([$iLeft, $iTop, $iRight, $iBottom [, $iScreen]]) Capture screen region and return as HBITMAP handle. Parameters: $iLeft, $iTop, $iRight, $iBottom - Capture region (default: 0 = full screen) $iScreen - Monitor index (default: -1 = virtual screen) Returns: Success: HBITMAP handle (must DeleteObject when done) Failure: 0 and sets @error Example: $hBitmap = _ImageSearch_CaptureScreen(0, 0, 800, 600) ; ... use $hBitmap ... _WinAPI_DeleteObject($hBitmap) _ImageSearch_ScreenCapture_SaveImage($sImageFile [, $iLeft [, $iTop [, $iRight [, $iBottom [, $iScreen]]]]]) Captures a screen region and saves it directly to an image file in one call. Parameters: $sImageFile - Output file path (extension determines format: .bmp, .png, .jpg/.jpeg) $iLeft, $iTop, $iRight, $iBottom - Capture region (default: 0 = full screen) $iScreen - Monitor index (default: 0 = primary screen) Returns: Success: True (1) Failure: False (0) and sets @error Remarks: Automatically detects format from file extension ~2x faster than separate capture + save operations JPEG quality is fixed at 100% (highest quality) Uses DPI-aware capture (accurate on all DPI scales) Example: ; Capture full primary screen to PNG _ImageSearch_ScreenCapture_SaveImage(@ScriptDir & "\screenshot.png") ; Capture region on monitor 2 to JPEG _ImageSearch_ScreenCapture_SaveImage(@ScriptDir & "\region.jpg", 100, 100, 600, 400, 2) _ImageSearch_hBitmapLoad($sImageFile [, $iAlpha [, $iRed [, $iGreen [, $iBlue]]]]) Load image file and convert to HBITMAP handle. Parameters: $sImageFile - Path to image file $iAlpha, $iRed, $iGreen, $iBlue - Background color components 0-255 (default: 0 = transparent) Returns: Success: HBITMAP handle (must DeleteObject when done) Failure: 0 and sets @error Example: $hBitmap = _ImageSearch_hBitmapLoad("image.png", 255, 255, 255, 255) ; White background ; ... use $hBitmap ... _WinAPI_DeleteObject($hBitmap) Mouse Functions _ImageSearch_MouseMove($iX, $iY [, $iSpeed [, $iScreen]]) Moves mouse cursor to coordinates (supports negative coordinates on multi-monitor). Parameters: $iX, $iY - Target coordinates (-1 = keep current position) $iSpeed - Speed 0-100 (0=instant, default: 0) $iScreen - Monitor index (default: -1 = virtual screen) Returns: 1 on success, 0 on failure _ImageSearch_MouseClick([$sButton [, $iX [, $iY [, $iClicks [, $iSpeed [, $iScreen]]]]]]) Clicks mouse at coordinates (screen or current position). Parameters: $sButton - Button: "left", "right", "middle" (default: "left") $iX, $iY - Coordinates (-1 = current position) $iClicks - Number of clicks (default: 1) $iSpeed - Speed 0-100 (0=instant, default: 0) $iScreen - Monitor index (default: -1 = virtual screen) Returns: 1 on success, 0 on failure _ImageSearch_MouseClickWin($sTitle, $sText, $iX, $iY [, $sButton [, $iClicks [, $iSpeed]]]) Clicks mouse in a window. Parameters: $sTitle - Window title/class/handle $sText - Window text $iX, $iY - Relative coordinates in window $sButton - Button (default: "left") $iClicks - Number of clicks (default: 1) $iSpeed - Speed 0-100 (default: 0) Returns: 1 on success, 0 on failure Wait & Click Functions _ImageSearch_Wait($iTimeout, $sImagePath [, $iLeft [, $iTop [, $iRight [, $iBottom [, $iScreen [, $iTolerance [, $iResults [, $iCenterPOS [, $fMinScale [, $fMaxScale [, $fScaleStep [, $iReturnDebug [, $iUseCache [, $iMaxAttempts]]]]]]]]]]]]]) Waits for an image to appear on screen with timeout and optional max attempts limit. Parameters: $iTimeout - Timeout in milliseconds (0 = wait forever) $sImagePath - Image file path(s), multiple separated by "|" $iMaxAttempts - Max number of search attempts (0 = unlimited, default: 0) Other parameters same as _ImageSearch Returns: Success: 2D Array (same as _ImageSearch) Timeout: Empty array with [0][0] = 0 Example: ; Wait 5 seconds for button (unlimited attempts) $aResult = _ImageSearch_Wait(5000, "button.png") If $aResult[0] > 0 Then MouseClick("left", $aResult[1][0], $aResult[1][1]) Else MsgBox(0, "Timeout", "Button not found") EndIf _ImageSearch_WaitClick($iTimeout, $sImagePath [, $sButton [, $iClicks [, $iLeft [, $iTop [, $iRight [, $iBottom [, $iScreen [, $iTolerance [, $iResults [, $iCenterPOS [, $fMinScale [, $fMaxScale [, $fScaleStep [, $iReturnDebug [, $iUseCache]]]]]]]]]]]]]) Waits for an image and clicks it when found. Parameters: $iTimeout - Timeout in milliseconds (0 = wait forever) $sImagePath - Image file path(s) $sButton - Mouse button: "left", "right", "middle" (default: "left") $iClicks - Number of clicks (default: 1) Other parameters same as _ImageSearch Returns: Success: 1 (image found and clicked) Timeout: 0 (image not found) Monitor Functions _ImageSearch_Monitor_GetList() Gets a list of all connected display monitors and their properties. Returns: Success: The number of monitors found. @extended contains a detailed log. Failure: 0 and sets @error Remarks: Populates the global $g_aMonitorList Called automatically by _ImageSearch_Startup _ImageSearch_Monitor_ToVirtual($iMonitor, $iX, $iY) Converts local monitor coordinates to virtual screen coordinates. Parameters: $iMonitor - The 1-based index of the monitor $iX, $iY - Coordinates relative to the monitor's top-left corner Returns: Success: A 2-element array [$vX, $vY] containing virtual screen coordinates Failure: 0 and sets @error _ImageSearch_Monitor_FromVirtual($iMonitor, $iX, $iY) Converts virtual screen coordinates to local monitor coordinates. Parameters: $iMonitor - The 1-based index of the monitor $iX, $iY - Virtual screen coordinates Returns: Success: A 2-element array [$lX, $lY] containing local monitor coordinates Failure: 0 and sets @error _ImageSearch_Monitor_Current() Detects which monitor contains the current mouse cursor position. Returns: Success: Monitor index (1-based) where the cursor is located Failure: 0 and sets @error _ImageSearch_Monitor_GetAtPosition([$iX [, $iY]]) Returns detailed information string about the monitor at specified position. Parameters: $iX, $iY - Coordinates (default: -1 = use mouse cursor position) Returns: Success: String describing the monitor (e.g., "Monitor 2: 1920x1080 (Primary)") Failure: Error message string Window Coordinate Functions _ImageSearch_Window_ToScreen($hWnd, $iX, $iY [, $bClientArea]) Converts window-relative coordinates to screen (virtual desktop) coordinates. Parameters: $hWnd - Window handle or title $iX, $iY - Coordinates relative to window $bClientArea - True = relative to client area, False = relative to window (default: True) Returns: Success: A 2-element array [$screenX, $screenY] containing screen coordinates Failure: 0 and sets @error _ImageSearch_Window_FromScreen($hWnd, $iScreenX, $iScreenY [, $bClientArea]) Converts screen (virtual desktop) coordinates to window-relative coordinates. Parameters: $hWnd - Window handle or title $iScreenX, $iScreenY - Screen coordinates $bClientArea - True = relative to client area, False = relative to window (default: True) Returns: Success: A 2-element array [$winX, $winY] containing window-relative coordinates Failure: 0 and sets @error Cache & Info Functions _ImageSearch_WarmUpCache($sImagePaths [, $bEnableCache]) Pre-loads images into cache for faster subsequent searches. Parameters: $sImagePaths - Pipe-separated list of images to preload $bEnableCache - Enable persistent cache (default: True) Returns: Success: Number of images cached Failure: 0 Example: _ImageSearch_WarmUpCache("btn1.png|btn2.png|icon.png") _ImageSearch_ClearCache() Clears the internal bitmap and location cache. Remarks: Useful for freeing memory or forcing re-scan after image updates Clears both in-memory cache and persistent disk cache _ImageSearch_GetDllInfo([$bForceRefresh]) Gets comprehensive DLL information in INI format. Parameters: $bForceRefresh - Force refresh of cached info (default: True) Returns: Multi-line string in INI format with sections: [DLL] - DLL name, version, architecture, author [OS] - OS name, version, build, platform [CPU] - Threads, SSE2, AVX2, AVX512 support [SCREEN] - Virtual screen, scale, monitors with individual resolutions [CACHE] - Location cache, bitmap cache, pool size _ImageSearch_GetInfo() Gets formatted DLL and system information for display. Returns: Formatted string with DLL info, cache status, and screen information _ImageSearch_GetDllValue($sSection, $sKey) Quick accessor to read any value from cached DLL Info. Parameters: $sSection - Section name (DLL, OS, CPU, SCREEN, CACHE) $sKey - Key name Returns: Value string or "" if not found Example: $sVersion = _ImageSearch_GetDllValue("DLL", "Version") $sOSName = _ImageSearch_GetDllValue("OS", "Name") $iThreads = _ImageSearch_GetDllValue("CPU", "Threads") _ImageSearch_GetLastResult() Gets the raw DLL return string from the last search. Returns: Raw result string (e.g., "{2}[100|200|32|32,150|250|32|32]") Remarks: Useful for debugging or custom parsing _ImageSearch_GetScale([$iScreen]) Gets the DPI scale factor for a specific monitor as a decimal number. Parameters: $iScreen - Monitor index (0 = Primary, 1+ = specific monitor number) Returns: Scale factor as number (e.g., 1.0, 1.25, 1.5) or 0 if not found Example: $fScale = _ImageSearch_GetScale(0) ; Get primary monitor scale (e.g., 1.25) $fScale = _ImageSearch_GetScale(2) ; Get monitor 2 scale Examples Advanced Search with Multiple Images and Scaling #include "ImageSearchDLL_UDF.au3" ; Search for multiple UI elements with different scales Local $sImages = "button_ok.png|button_cancel.png|icon_settings.png" Local $aResult = _ImageSearch($sImages, 0, 0, 1920, 1080, -1, 15, 10, 1, 0.8, 1.3, 0.1, 0, 1) If $aResult[0] > 0 Then ConsoleWrite("Found " & $aResult[0] & " matches:" & @CRLF) For $i = 1 To $aResult[0] ConsoleWrite(" Match " & $i & ": X=" & $aResult[$i][0] & ", Y=" & $aResult[$i][1] & ", W=" & $aResult[$i][2] & ", H=" & $aResult[$i][3] & @CRLF) Next Else ConsoleWrite("No matches found" & @CRLF) EndIf Multi-Monitor Screen Capture #include "ImageSearchDLL_UDF.au3" ; Get monitor information _ImageSearch_Monitor_GetList() ConsoleWrite("Detected " & $g_aMonitorList[0][0] & " monitors" & @CRLF) ; Capture each monitor separately For $i = 1 To $g_aMonitorList[0][0] Local $sFile = @ScriptDir & "\monitor_" & $i & ".png" _ImageSearch_ScreenCapture_SaveImage($sFile, 0, 0, 0, 0, $i) ConsoleWrite("Captured monitor " & $i & " to: " & $sFile & @CRLF) Next ; Capture entire virtual desktop _ImageSearch_ScreenCapture_SaveImage(@ScriptDir & "\virtual_desktop.png", 0, 0, 0, 0, -1) Automated UI Testing #include "ImageSearchDLL_UDF.au3" ; Pre-load images for better performance _ImageSearch_WarmUpCache("login_button.png|username_field.png|password_field.png") ; Wait for login screen and interact If _ImageSearch_WaitClick(10000, "login_button.png") Then ConsoleWrite("Login button clicked" & @CRLF) ; Find username field and click Local $aUsername = _ImageSearch_Wait(5000, "username_field.png") If $aUsername[0] > 0 Then MouseClick("left", $aUsername[1][0], $aUsername[1][1]) Send("myusername") ; Find password field and click Local $aPassword = _ImageSearch_Wait(5000, "password_field.png") If $aPassword[0] > 0 Then MouseClick("left", $aPassword[1][0], $aPassword[1][1]) Send("mypassword") Send("{ENTER}") EndIf EndIf Else MsgBox(0, "Error", "Login screen not found within 10 seconds") EndIf Error Codes Code Constant Description -1 $IMGSE_INVALID_PATH Invalid file path -2 $IMGSE_FAILED_TO_LOAD_IMAGE Failed to load image -3 $IMGSE_FAILED_TO_GET_SCREEN_DC Failed to get screen device context -4 $IMGSE_INVALID_SEARCH_REGION Invalid search region -5 $IMGSE_INVALID_PARAMETERS Invalid parameters -6 $IMGSE_INVALID_SOURCE_BITMAP Invalid source bitmap -7 $IMGSE_INVALID_TARGET_BITMAP Invalid target bitmap -9 $IMGSE_RESULT_TOO_LARGE Result too large -10 $IMGSE_INVALID_MONITOR Invalid monitor Performance Tips Use Cache: Enable cache for repeated searches to get 30-50% speed boost Pre-load Images: Use _ImageSearch_WarmUpCache() during initialization Limit Search Area: Specify search regions instead of full screen when possible Optimize Tolerance: Use appropriate tolerance values (5-15 for most cases) Use Appropriate Scale Range: Limit scale range to what you actually need Monitor Selection: Use specific monitor index for faster searches on multi-monitor setups Image Format: BMP files load faster than PNG/JPG but are larger Memory Management: Always call _WinAPI_DeleteObject() for HBITMAP handles Changelog Version 3.5 Added thread-local DPI awareness (no GUI resize issues) Enhanced multi-monitor support with individual monitor scales Improved cache system with persistent disk cache Added _ImageSearch_ScreenCapture_SaveImage() for direct file saving Performance optimizations with SIMD instructions Better error handling and debugging information License This project is licensed under the MIT License - see the LICENSE file for details. Author Dao Van Trong - TRONG.PRO Thank you for using ImageSearch UDF! 🚀 ☕ Support My Work Enjoy my work? Buy me a 🍻 or tip via ❤️ PayPal Happy Automating! 🚀 ___________________________