Yet Another Question but this envolves code not opinion

Ok two questions When I try to uncheck the boxes for these it brings up an error in MFC42.dll. I also wanna know if I am getting this correct. Alright the GetDlgItem is selecting the Item the ShowWindow function is telling if it should show the window or not show it. What does this operator -> (if it is called that) do?
And void Cday22Dlg::OnCkshwmsg() is a function in the class Cday22Dlg?? Thanks
void CDay22Dlg::OnCkshwmsg()
{


UpdateData(TRUE);

if (m_bEnableMsg == TRUE)
{

GetDlgItem(IDC_MSG)->ShowWindow(TRUE);
GetDlgItem(IDC_SHWMSG)->ShowWindow(TRUE);
GetDlgItem(IDC_DFLTMSG)->ShowWindow(TRUE);
GetDlgItem(IDC_CLRMSG)->ShowWindow(TRUE);
GetDlgItem(IDC_STATIC)->ShowWindow(TRUE);
}

else
{
GetDlgItem(IDC_MSG)->ShowWindow(FALSE);
GetDlgItem(IDC_SHWMSG)->ShowWindow(FALSE);
GetDlgItem(IDC_DFLTMSG)->ShowWindow(FALSE);
GetDlgItem(IDC_CLRMSG)->ShowWindow(FALSE);
GetDlgItem(IDC_STATIC)->ShowWindow(FALSE);
}

The code looks ok, so I think your problem is elsewhere.

Quote:

---

What does this operator -> (if it is called that) do?

---

It accesses members of a class or struct through a pointer. GetDlgItem() will return a pointer to a CWnd object and ShowWindow is a member of CWnd. The code used is shorthand for doing -

CWnd* wnd = GetDlgItem(IDC_MSG);
wnd->ShowWindow(TRUE);

If you want to learn MFC, you should be familiar with C++ first.

Thanks.

I do know some C++ but I am having a hard time understanding Classes. I know it makes its own data type and you access it outside the class. But Now that you mention -> accessing it through a pointer I remember reading it. Pointer to Member sorry for wasting time.

Ryan