LoadVar

Env::LoadVar

uint32_t LoadVar(const void* pKey , uint32_t nKey , void* pVal , uint32_t nVal , uint8_t nType);

Loads the value of the contract variable denoted by {nType, [pKey, nKey]} into buffer pointed to by pVal.

Parameters

• pKey : pointer to the key. Key could be any kind of data
• nKey : the size of the key
• pVal : pointer to the value buffer
• nVal : the size of the buffer
• nType : can be anything. Means - the contract can read the auxiliary variables (such as total locked funds) that BVM uses for it.

Return value

• the actual (non-truncated) value size or 0 if such a variable doesn't exist.

Notes

• If the value is larger than nVal - it's truncated.

Example