Problems with creating a parameter of Int** name found in C code

[jamie]

Trying to create a parameter of Pointer to a Pointer as a Parameter.

Code: Pascal  [Select][+][-]

1.  
2. Function Name( Var Item:PInteger); //?
3.  

And in code Land.


Name(@IntegerVariable);

Compiler does not allow that?

How to simulate a   Pointer to  pointer of Integer as a parameter ?

Jamie

[Thaddy]

Code: Pascal  [Select][+][-]

1. type
2.   PPInteger = ^PInteger;

Maybe it is already declared in the types unit. Freepascal also uses that type in some libraries.

[jamie]

Ok, I'll try that later, I need to step out and have them Reset my heart today, its running like a broken Ford!

CUL
Jamie

[Thaddy]

Take care, Jamie!

[H₂SO₄]

Trying to create a parameter of Pointer to a Pointer as a Parameter.

Code: Pascal  [Select][+][-]

1. Function Name( Var Item:PInteger); //?
2.  

Name(@IntegerVariable);

var  parameters require an lvalue (a variable, roughly speaking), so you can't just take the address at the call site - you'll have to store it somewhere:

Code: Pascal  [Select][+][-]

1. var
2.   Item: Integer;
3.   ItemPtr: PInteger;
4.  
5. ItemPtr := @Item;
6. Name(ItemPtr);

Ok, I'll try that later, I need to step out and have them Reset my heart today, its running like a broken Ford!

Hang in there!

[Remy Lebeau]

Code: Pascal  [Select][+][-]

1. Function Name( Var Item:PInteger); //?

And in code Land.

Code: Pascal  [Select][+][-]

1. Name(@IntegerVariable);

Compiler does not allow that?

"var PInteger" will work, you just need a variable to satisfy the var reference:

Code: Pascal  [Select][+][-]

1. var p: PInteger;
2. p := @IntegerVariable;
3. Name(p);

[jamie]

Ok, I settled for the PPinteger, that seems to work the closes to match the C code.

Thank You.

Jamie