Codejock Developer Community : GetEditCtrl()->GetWindowText crash

GetEditCtrl()->GetWindowText crash : It could be that the combo box...

Fri, 03 Jan 2014 10:51:08 +0000

Author: kstowell
Subject: 22148
Posted: 03 January 2014 at 10:51am

It could be that the combo box is a drop list in that case it would not have an edit control. You might want to try something like this:

CXTPControls* pXTPControls = m_myWndToolBar.GetControls();
if (pXTPControls)
    return false;

CXTPControlComboBox* pXTPComboBox =(CXTPControlComboBox*)pXTPControls ->FindControl(ID_ZOOM);
if (!pXTPComboBox)
    return false;

CString strZoom;
CXTPControlComboBoxEditCtrl* pXTPEdit = pXTPComboBox->GetEditCtrl();
if (pXTPEdit)
    strZoom = pXTPComboBox->GetEditText();
else
    strZoom = pXTPComboBox->GetListBoxText();

GetEditCtrl()->GetWindowText crash : Code snippet is as below:CXTPControls*...

Thu, 26 Dec 2013 13:29:29 +0000

Author: mathewteena
Subject: 22148
Posted: 26 December 2013 at 1:29pm

Code snippet is as below:

CXTPControls* pXTPControls = m_myWndToolBar.GetControls();

if (!pXTPControls )

return false;

CXTPControlComboBox* pXTPComboBox =(CXTPControlComboBox*)pXTPControls ->FindControl(ID_ZOOM);

if (!pXTPComboBox )

return false;

CString strZoom;

pXTPComboBox ->GetEditCtrl()->GetWindowText(strZoom);

The line in the snippet that has been marked as bold causes a crash. I suspect that GetEditCtrl returns NULL( or invalid pointer) which leads to GetWindowText() to crash.

What could be the possible reasons for GetEditCtrl returning invalid pointer?