pointes in VB

[liangchenen]

how to make a pointer in VB.

Also, how do you pass by reference in VB?

[wtd]

VB6 or VB.NET?

For VB.NET, to pass by reference, you'd have something like:

code:

Sub Foo(ByRef a As Integer)    ' ... End Sub

Pointers you don't really have.

[Monstrosity_]

liangchenen wrote:

how to make a pointer in VB.

Also, how do you pass by reference in VB?

In VB6 (not sure about .NET) there are three undocumented functions

VarPtr: Gives the memory address of a variable
StrPtr: Gives the memory address of the contents of a string
ObjPtr: Gives the memory address of the object

[liangchenen]

what if I have something like this:

code:

void add( int a [500]. int b[500]) {  int x;  for (x=0;x<500;x++)  {   a[x] += b[x];  } } int main() {   int num1[500];  int num2[500];  add (num1,num2);  return 0; }

This is code in C++, in the function, I pass the pointer of the array num1[500] and num2[500] into the function, so, when I add a[500] and b[500], I am actually manipulate arrays num1 and num2.

Can you show me how it is done in VB6.?
thx a lot

[wtd]

Google is your friend, as is MSDN.

[Monstrosity_]

liangchenen wrote:

I pass the pointer of the array num1[500] and num2[500] into the function, so, when I add a[500] and b[500], I am actually manipulate arrays num1 and num2.

Can you show me how it is done in VB6.?
thx a lot

In this case you dont need to worry about pointers, just as wtd had mentioned earlier, look up how to pass by refrence instead of by value.