Conditional operator (==) returning false even the condition is true ?

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I have created three property pages on propertysheet,and intializing a bool Value on the parent class of the propertysheet .Now, When accessing that Bool value under InitDialog()Second property page it always return TRUE and while comparing that value in the if statement ,Condition returns false. But if the same procedure, when repeated on third property page Everything works fine.

C#

//My code
//CPage is Parent of propertysheet
// BtnState is Bool value initialized on CPage of Propertysheet
BOOL CGs::OnInitDialog()
{
  CPropertyPage::OnInitDialog();
  CPage * m_pg = ((CPage*)((CGSPropertySheet*)GetParent())->GetParent());
  if(m_pg->BtnState == true)
  {
    m_set.EnableWindow(false);
  }

Posted 2-Sep-11 1:45am

sunny chouhan

Updated 2-Sep-11 1:48am

Toniyo Jackson

v2

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#realJSOP · Answer 1 · 2011-09-02T01:51:00

Solution 1

what type is BtnState? If it's not a bool, and it's not set to null (or zero), it will evaluate to true.

EDIT ======================

0) Are you sure m_pg isn't null?

1) Try it this way:

C++

CPage* m_pg = ((CPage*)((CGSPropertySheet*)GetParent())->GetParent());
if (m_pg)
{
    m_set.EnableWindow(!m_pg->BtnState);
}

Posted 2-Sep-11 1:51am

#realJSOP

Updated 2-Sep-11 6:04am

v3

Comments

Albert Holguin 2-Sep-11 11:57am

looks like the OP is getting the reverse situation, getting false... +5 anyway, I actually thought of this initially too... OP posted a follow up below as a solution.

sunny chouhan · Answer 2 · 2011-09-02T02:22:00

Solution 2

Hey John Simmons Thanks for the reply:
As I Have already written above that BtnState is BOOL variable which is being initialized in Parent page of propertysheet

My question is even when the BtnState is having value true and while comparing it in the if statement(As Below) the condition comes out to be FALSE ? WHY WHY WHY
if(m_pg->BtnState == true)
{
m_set.EnableWindow(false);
}

Posted 2-Sep-11 2:22am

sunny chouhan

Comments

André Kraak 2-Sep-11 8:32am

If you have a question about or comment on the given solution use the "Have a Question or Comment?" option beneath the solution. When using this option the person who gave the solution gets an e-mail message and knows you placed a comment and can respond if he/she wants.

Please move the content of this solution to the solution you are commenting on and remove the solution. Thank you.

Albert Holguin 2-Sep-11 11:58am

Did you confirm with the debugger that BtnState has the value you expect?