MFC small help please

[dan60606]

Quote:

This code work:

int CPageWelcome::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CWnd::OnCreate(lpCreateStruct) == -1)
return -1;

CStatic * lblPresent = new CStatic();
lblPresent->Create(L"Present", WS_CHILD | WS_VISIBLE,
CRect(20, 20, 100, 40), this);

return 0;
}

This code dont work:

int CPageWelcome::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CWnd::OnCreate(lpCreateStruct) == -1)
return -1;

CStatic lblPresent;
lblPresent.Create(L"Present", WS_CHILD | WS_VISIBLE,
CRect(20, 20, 100, 40), this);

return 0;
}

Please help i dont understand. Thank.

[_Superman_]

In the first code snippet, the CStatic object is created on the heap and will remain in memory till delete is called on the object. In the second code snippet, the CStatic object is created on the stack and will go out of scope (will be destroyed) as soon as OnCreate exits.

«_Superman_»  _I love work. It gives me something to do between weekends.

_Microsoft MVP (Visual C++) (October 2009 - September 2013)

Polymorphism in C

[dan60606]

yea thank and if i make

private:
CStatic mpStatic;

like private member variable End block in OnCreate not destroyed CStatic object and dont work. If use pointer all OK. OMG it is work and before 1 hour not =( sorry fkn bug. Thank you for help. =)

[_Flaviu]

Have you tried to set

CStatic lblPresent

as member variable ? Something like

CStatic m_lblPresent