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It turns out that WinGetTitle was also the source of the brief white flicker on the title bar. After switching to a class name based filtering, the flicker is gone and everything is even faster.

new findings: Detect if WebView2 is installed on clients machine (VB.NET)

Win10 - Win11 I like the Win10 better.

Get the binary type for exe / dll file. ;Coded by UEZ build 2024-04-08 #AutoIt3Wrapper_UseX64 = y #include <WinAPIFiles.au3> #include <WinAPIProc.au3> Global $sFile = FileOpenDialog("Select a DLL file", "", "File (*.dll;*.exe)", $FD_FILEMUSTEXIST) If @error Then Exit MsgBox($MB_ICONINFORMATION, "File Binary Type", StringRegExpReplace($sFile, ".+\\(.+)", "$1") & " = " & _WinAPI_GetBinaryType2($sFile)) ; #FUNCTION# ==================================================================================================================== ; Author.........: UEZ ; Modified.......: ; =============================================================================================================================== Func _WinAPI_GetBinaryType2($sFile) Local Const $hFile = _WinAPI_CreateFile($sFile, 2, 2) If Not $hFile Or @error Then Return SetError(1, 0, 0) Local Const $hMapping = _WinAPI_CreateFileMapping($hFile, 0, Null, $PAGE_READONLY, Null) If Not $hMapping Then _WinAPI_CloseHandle($hFile) Return SetError(2, 0, 0) EndIf Local Const $pAddress = _WinAPI_MapViewOfFile($hMapping, 0, 0, $FILE_MAP_READ) If Not $pAddress Or @error Then __ReturnGBT2($hMapping, $hFile, 3) Local $aHeader = DllCall("Dbghelp.dll", "ptr", "ImageNtHeader", "ptr", $pAddress) If @error Or IsArray($aHeader) = 0 Then Return __ReturnGBT2($hMapping, $hFile, 4) Local $tIMAGE_NT_HEADERS = DllStructCreate("dword Signature;ptr FileHeader;ptr OptionalHeader;", $aHeader[0]) If @error Or Not IsDllStruct($tIMAGE_NT_HEADERS) Then Return __ReturnGBT2($hMapping, $hFile, 5) Local $tIMAGE_FILE_HEADER = DllStructCreate("word Machine;word NumberOfSections;dword TimeDateStamp;dword PointerToSymbolTable;dword NumberOfSymbols;word SizeOfOptionalHeader;word Characteristics;", DllStructGetPtr($tIMAGE_NT_HEADERS) + 4) If @error Or Not IsDllStruct($tIMAGE_FILE_HEADER) Then Return __ReturnGBT2($hMapping, $hFile, 6) __ReturnGBT2($hMapping, $hFile, 0) Switch $tIMAGE_FILE_HEADER.Machine Case 0x014c Return "x86" Case 0x0200 Return "Intel Itanium" Case 0x8664 Return "x64" Case Else Return "Error" EndSwitch EndFunc ;==>_WinAPI_GetBinaryType2 Func __ReturnGBT2($hMapping, $hFile, $iError) _WinAPI_CloseHandle($hMapping) _WinAPI_CloseHandle($hFile) If $iError Then Return SetError($iError, 0, 0) EndFunc ;==>__ReturnGBT2