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I am writing an app using MFC. I created a class:
CFormCommandView derived from CFormView. I want to embed a slider control in it. I did it using a Class Wizard, but obviously something is wrong - when I call SetRange I get an 'assertion failed' notice - it looks like my slider is not attached to any window - ASSERT(::IsWindow(m_hWnd)) fails.
What's wrong? MSDN says I do not have to call Create when I use Wizard.
Thank you very much in advance!
your problem is due to the fact that you may be trying to set range before the window is being created.
try doing it in the WM_INITDIALOG handler for the formview derived class.
I call the SetRange in OnCreate (WM_CREATE). I wanted to call in in OnInitDialog like you suggested, but WM_INITDIALOG doesn't appear in the Wizard's message map window. Is there a message I could use instead???
after you open class wizard go to the class info tab. there set the filter to Dialog . you will get the
WM_INITDIALOG message in the Messages tab.
sri