1.3 KiB
1.3 KiB
ResetLastError
Sets the value of the predefined variable _LastError into zero.
void ResetLastError();
Return Value
No return value.
Note
It should be noted that the GetLastError() function doesn't zero the _LastError variable. Usually the ResetLastError() function is called before calling a function, after which an error appearance is checked.
Example:
//+------------------------------------------------------------------+
//| Script program start function |
//+------------------------------------------------------------------+
void OnStart()
{
//--- reset the last error code before calling the function,
//--- otherwise, GetLastError() may return the previous error code
long lres=SymbolInfoInteger("123456",SYMBOL_DIGITS);
PrintFormat("lres=%d error=%d",lres,GetLastError());
lres=SymbolInfoInteger(_Symbol,SYMBOL_DIGITS);
PrintFormat("lres=%d error=%d",lres,GetLastError());
ResetLastError();
lres=SymbolInfoInteger(_Symbol,SYMBOL_DIGITS);
PrintFormat("lres=%d error=%d",lres,GetLastError());
}