how to set the max and min option for a dialog

[kaya17]

hi, i got a dialog,
and i already checked the boxes "Minimize box" and "Maximize box" in the styles tab under the Dialog Properties.
so, the minimize and maximize icons do appear in the right up corner of the dialog.

however, after clicking the maximize icon. only the dialog is maximised, the contents within the dialog ( a clistctrl and some buttons) still remain the same size and same position.

then, i added the following funtion to the dialog class:

void CReadDBDlg::OnSize(UINT nType, int cx, int cy)
{
CDialog::OnSize(nType, cx, cy);

// TODO: Add your message handler code here
GetDlgItem(IDC_ListControl)->SetWindowPos(NULL,0,0,cx -5, cy -5,
SWP_NOMOVE | SWP_NOZORDER);

GetDlgItem(IDC_BUTTON_PRINT)->SetWindowPos(NULL,0,0,cx -5, cy -5,
SWP_NOMOVE | SWP_NOZORDER);


GetDlgItem(IDC_READ)->SetWindowPos(NULL,0,0,cx -5, cy -5,
SWP_NOMOVE | SWP_NOZORDER);


GetDlgItem(IDC_Query)->SetWindowPos(NULL,0,0,cx -5, cy -5,
SWP_NOMOVE | SWP_NOZORDER);


GetDlgItem(IDC_INSERT)->SetWindowPos(NULL,0,0,cx -5, cy -5,
SWP_NOMOVE | SWP_NOZORDER);

GetDlgItem(IDC_DELETE)->SetWindowPos(NULL,0,0,cx -5, cy -5,
SWP_NOMOVE | SWP_NOZORDER);

GetDlgItem(IDC_BUTTONSCAN)->SetWindowPos(NULL,0,0,cx -5, cy -5,
SWP_NOMOVE | SWP_NOZORDER);

GetDlgItem(IDOK)->SetWindowPos(NULL,0,0,cx -5, cy -5,
SWP_NOMOVE | SWP_NOZORDER);
}

then, when execute it, it gave an assertion error.
saying something
ASSERT:IsWindow(m_hWnd)
.....


anybody could tell me what's wrong here?

Thanks a lot in advance

kaya

 

[Zyrenthian]

It is calling OnSize before you have it fully created. add the following after your "TODO"

if(m_hWnd)
{
// rest of your code
}

You are acting upon a control that you can not yet act upon.

Matt

 

[kaya17]

hi, i did as what you said, but still it said ASSERT:IsWindow(m_hWnd));




and what should i if i want it to be maximised when it is first launched?

thanks!

KAYA