Compiler Warning (level 1) C4272
Collapse the table of content
Expand the table of content
Important This document may not represent best practices for current development, links to downloads and other resources may no longer be valid. Current recommended version can be found here. ArchiveDisclaimer

Compiler Warning (level 1) C4272

Error Message

'function' : is marked __declspec(dllimport); must specify native calling convention when importing a function.

It is an error to export a function marked with the __clrcall calling convention, and the compiler issues this warning if you attempt to import a function marked __clrcall.

The following sample generates C4272:

// C4272.cpp
// compile with: /c /W1 /clr
__declspec(dllimport) void __clrcall Test();   // C4272
__declspec(dllimport) void Test2();   // OK
© 2015 Microsoft