Universal thunk

<programming, operating system> A software mechanism allowing a Windows 3.1 application to call a 32-bit {dynamically linked library} (DLL) under Win32s.

The Windows 3.1 application which wants to call an entry in a 32-bit DLL instead calls a corresponding entry in a 16-bit DLL.

The programmer must also include code to detect whether the 32-bit DLL is loaded.

A 32-bit EXE loads the 32-bit DLL.

See also Generic Thunk, Flat Thunk.

["Calling a Win32 DLL from a Windows 3.1 Application", Win32 SDK Knowledge Base, Article ID Q97785].

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universal quantifier
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flat thunk
generic thunk
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Universal Time Coordinated
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