Compiler Warning (level 1 and level 4) C4949

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pragmas 'managed' and 'unmanaged' are meaningful only when compiled with '/clr[:option]'

The compiler ignores the managed and unmanaged pragmas if the source code is not compiled with /clr. This warning is informational.

The following sample generates C4949:

// C4949.cpp
// compile with: /LD /W1
#pragma managed   // C4949

When #pragma unmanaged is used without /clr, C4949 is a level 4 warning.

The following sample generates C4949:

// C4949b.cpp
// compile with: /LD /W4
#pragma unmanaged   // C4949