Thread: How to use HRESULT in C function

how can i write a function to return HRESULT, i Don't know what is HRESULT and how should it be used for, googled it and found that, HRESULT can be used to represent the error condition in our program, will not go deep it those bit values, but what i understood was
1. 0 or positive number indicates sucess
2. negative number will indicate failure

My Scenario, I have the following structure

Code:

struct NODE
{
       NODE* pLeft;
       NODE* pRight;
}

Now I want to write a function

Code:

HRESULT TreeHasDepth(NODE* pNode, int depth)
{
  // my code here
}

In above function,
1. if depth of tree is equal to the given value of depth passed
2. if depth of tree is greater than the given argument passed
3. if depth is less than the given value of integer passed
4. if the tree is null

For the above scenarios to be tested, probably we will have to override HRESULT, can someone help me to understand how can we do it ?

Any help is greatly appreciated.

Regards,
Ved

O_o

The `HRESULT' thing is a part of the "WinAPI" used for programming "Windows".

Don't use it for your own interfaces.

Beyond that, I don't understand what you are asking about.

This "we will have to override HRESULT" stuff for example; that's meaningless.

Soma

yes, it is part of WINAPI, but we can use it in our program, by including the required header file.
I felt that by using this we have a proper way of returning the error in our function, if at all it comes up, like if my function returns S_OK i know and every one else using my function will know that there is no error in this function, this is an advantage over returning "-1" in case of error which is programmers understanding, and i will have to document it fr others to understand, that if "-1" is returned something went wrong.
Makes sense ?
So, I want to return HRESULT from my function.

Agreed, there are easier way of defining error codes, but this is how I am suppose to write this function, in general any function with HRESULT as return type.
I figured this link earlier, but not much of coding help.
Finding a hard time to understand that, so posted here.
I will repost it in Windows forum.

Thanks !!

And another!