Compiler Warning (level 1) C4920

enum enum member member=value already seen in enum enum as member=value

If a .tlb that you pass to #import has the same symbol defined in two or more enums, this warning indicates that subsequent identical symbols are ignored and will be commented out in the .tlh file.

Assuming a .tlb that contains:

library MyLib  
    typedef enum {  
        enumMember = 512  
    } AProblem;  

    typedef enum {  
        enumMember = 1024  
    } BProblem;  

the following samples generates C4920,

// C4920.cpp  
// compile with: /W1  
#import "t4920.tlb"   // C4920  

int main() {