Hi all,
        I need to assign different values to a static variable of a
class. The following code do not work:

Set.h
class CSet
{
    public:
                 ......
                static int count ;

    protected:
                ........

int CSet::count = 0; // Is this line neccessary??

CSetView.cpp

............

if ( type = = "DS")
CSet::count = 0;

.....

The error message i got was :
unresolved external symbol "public: static int  CSet::count"

can someone tell me how to write to a static member?? I try declaring a
static member function and do the assignment inside it....and the same
problem still arise....i also try using friend static function and it
still won't work. btw, i am using VC++ 6.0

pls e-mail me in addition to the newsgroup.
Thanks in advance....
leesze

--
********************************************************
*As Imagination Bodies Forth
*The Forms Of Things Unknown, The Poet's Pen
*Turns Them To Shapes, And Gives To Airy Nothing
*A Local Habitation And A Name
*
********************************************************

Basically, you have to put the instantiation in the cpp file and not the
header.  Here is an example of a static count variable that counts how
many instances are created of a class...

-Brian

teststatic.h
--------------------
class TestStatic {
public:
  TestStatic();
  ~TestStatic();

  static int count;

//int count=0;          // Cannot do this or you will get link errors

teststatic.cpp
--------------------
#include "TestStatic.h"

int TestStatic::count=0;// Here is where the static member goes

TestStatic::TestStatic() {
  count++;

TestStatic::~TestStatic() {
  count--;

main.cpp
--------------------
#include <stdio.h>
#include "TestStatic.h"

int main(int argc, char* argv[]) {
  TestStatic *ts = new TestStatic();
  printf("Count: %d\n",ts->count);

  TestStatic *TS = new TestStatic();
  printf("Count: %d\n",ts->count);
  printf("Count: %d\n",TS->count);

  delete ts;
  printf("Count: %d\n",TS->count);

  delete TS;

  return 0;

--
Brian Rectanus