Accessing the value of a struct

[SteveB]

Hi

I have a COM component that passes some udts around.


The function header is thus:


void App:assUdt(struct udtSR *pudtSR)


pudtSR has a member struct called udtValue1 of type udtLONG that has
the definition:


struct udtLONG
{
long lngValue;
enum enumVarStatus enmStatus;



};


what i want to do is set a LONG to the value stored in the lngValue
part of udtLONG.

however if I add


long lVal = pudtSR.udtValue1.lngValue;


I get the following error:


error C2228: left of '.udtValue1' must have class/struct/union type


Can anyone point me in the right direction ?


Many thanks


Steve

 

[David Harmon]

On 14 Sep 2006 04:26:12 -0700 in comp.lang.c++, "SteveB"

long lVal = pudtSR.udtValue1.lngValue;

I get the following error:

error C2228: left of '.udtValue1' must have class/struct/union type

It's a pointer.

pudtSR->udtValue1.lngValue;
or
(*pudtSR).udtValue1.lngValue;

 

[jimmy]

SteveB 写é“：

Hi

I have a COM component that passes some udts around.


The function header is thus:


void App:assUdt(struct udtSR *pudtSR)


pudtSR has a member struct called udtValue1 of type udtLONG that has
the definition:


struct udtLONG
{
long lngValue;
enum enumVarStatus enmStatus;



};


what i want to do is set a LONG to the value stored in the lngValue
part of udtLONG.

however if I add


long lVal = pudtSR.udtValue1.lngValue;

God, you just so careless to do so.
Pointers cannot use a dot operator.

 

[SteveB]

On 14 Sep 2006 04:26:12 -0700 in comp.lang.c++, "SteveB"


It's a pointer.

pudtSR->udtValue1.lngValue;
or
(*pudtSR).udtValue1.lngValue;

thank you - that was perfect

 

[SteveB]

SteveB 写é“：

God, you just so careless to do so.
Pointers cannot use a dot operator.

thanks for that jimmy.