Variables and pointers

[Adaz]

Hi,

How can I use variables by pointers and by value?

If I have 2 variables, "A" and "B",
then in a CallDll() I want to send "A" by value, and "B" by pointer, how can I do that?

thanks

[kevin]

 You can't send a pointer to variable, it's not supported.   But since the pointer is just an 32bit address, you can store the required data in a bank and pass in that address variable (that points to the the bank) into the function.

PlayBASIC Code: [Select]

 // bank to store/passed pointers 
  MyBank         =NewBank(100)
  BankAddress   =GetBankPtr(MyBank)

// program stuff  
  A=45
  B=50


// Dump the B value in to the bank
  PokeInt BankAddress,B
  
  
 // Call Dll
  result= CallDll(1,"SomeFunction",A,BankAddress) 


 etc

[Adaz]

Great, thank you!