__cdecl and __declspec calling conventions confusion

Question

I am writing a DLL for a third party application. The main software engineer mentions that the application uses the __cdecl (/Gd) calling convention. That I need to make sure that I use that.

Additionally, the third party has provided to me a C++ DLL skeleton which exports the functions as follows:

#ifdef _EXPORTING
  #define DECLSPEC    __declspec(dllexport)
#else
   #define DECLSPEC    __declspec(dllimport)
#endif

#ifdef __cplusplus
   extern "C" {  
#endif

DECLSPEC int ICD_Create(char* id);
....
....

I am kind of confused. Why the functions are being exported using __declspec convention instead of __cdedl?? does __declspec support _cdecl?

Thanks.

cdecl and declspec calling conventions confusion

2 Answers