WPF System.EntryPointNotFoundException: Unable to find an entry point named 'TaskDialogIndirect' in DLL 'comctl32.dll'
Calls to comctl32.dll succeed in .NET Framework 4.8, but fail in .NET 5 and in .NET Core 3.1 with System.EntryPointNotFoundException
[DllImport("comctl32.dll", PreserveSig = false)] private static extern void TaskDialogIndirect([In] ref TaskDialogConfig pTaskConfig, out int pnButton, out int pnRadioButton, [MarshalAs(UnmanagedType.Bool)] out bool pfVerificationFlagChecked);
The workaround is for the application host to add an app.manifest file declaring the dependency on comctl32.dll.
app.manifest
<?xml version="1.0" encoding="utf-8"?> <assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1"> <!-- Enable themes for Windows common controls and dialogs (Windows XP and later) --> <dependency> <dependentAssembly> <assemblyIdentity type="win32" name="Microsoft.Windows.Common-Controls" version="6.0.0.0" processorArchitecture="*" publicKeyToken="6595b64144ccf1df" language="*" /> </dependentAssembly> </dependency> </assembly>WpfApp.csproj
<Project Sdk="Microsoft.NET.Sdk"> <PropertyGroup> <OutputType>WinExe</OutputType> <UseWPF>true</UseWPF> <ApplicationManifest>app.manifest</ApplicationManifest> <!-- ... --> </PropertyGroup> </Project>