LoadVarEx

Env::LoadVarEx

void LoadVarEx(void* pKey,
               uint32_t& nKey,
               uint32_t nKeyBufSize,
               void* pVal,
               uint32_t& nVal,
               uint8_t nType,
               uint8_t nSearchFlag)

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
• nKeyBufSize :
• 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.
• nSearchFlag :

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