Static class member Linker Errors

[hyling.s1]

Hi I'm getting "unresolved external symbol" linker errors from VC++
2003 when I use a static instance of a class for example

class myClass
{
protected:
static class2 mInstance; /* fails with "unresolved external symbol" */
static int mVar; /* works fine if I init it in the .cpp with: int
myClass:mVar = 0; */
}

What am I doing wrong?

Thanks
Hua-Ying

 

[Frederick Gotham]

posted:

Hi I'm getting "unresolved external symbol" linker errors from VC++
2003 when I use a static instance of a class for example

class myClass
{
protected:
static class2 mInstance; /* fails with "unresolved external symbol" */
static int mVar; /* works fine if I init it in the .cpp with: int
myClass:mVar = 0; */
}

class myClass {
protected:

class2 static mInstance; /* Just a declaration */
};

class2 myClass::mInstance( /* Arguments */ ); /* Definition */

 

[Victor Bazarov]

Hi I'm getting "unresolved external symbol" linker errors from VC++
2003 when I use a static instance of a class for example

class myClass
{
protected:
static class2 mInstance; /* fails with "unresolved external symbol" */
static int mVar; /* works fine if I init it in the .cpp with: int
myClass:mVar = 0; */
}

What am I doing wrong?

You're probably not defining your 'mInstance' anywhere. Read up on
static data members.

V