CSliderCtrl Range Setting Trouble

[Justin Cooke]

I'm having trouble using a CSliderCtrl. I'm trying to set the range from 0 -> 16384 by calling: m_sliderZoom.SetRange(0, 16384, FALSE); in the OnInitDialog() func. Two strange things are happening. First, if I immediately call GetRange() on the control, it returns both min and max values as 0. Secondly, when I call GetRange() later in the code, the range is always from 0 -> 100. So, why doesn't GetRange() at least return 0 -> 100 immediately after setting the range? And, more importantly, why am I unable to change the range from 0 -> 100? I've tried setting it to 0 -> 25, as well, with no difference in the final range. Any help is greatly appreciated.:confused: Here's what I think is the relevant code: BOOL CSMRLocatorDlg::OnInitDialog() { // other stuff m_sliderZoom.SetRange(0, 16384, FALSE); int min; int max; m_sliderZoom.GetRange( min, max ); CString message; message.Format( "Min: %d Max: %d", min, max ); AfxMessageBox( message ); // always "Min: 0 Max: 0" // other stuff } // later in the code void CSMRLocatorDlg::OnOut() { m_nZoomLevel = m_sliderZoom.GetPos(); CString message; int min; int max; m_sliderZoom.GetRange( min, max ); message.Format( "Min: %d Max: %d", min, max ); AfxMessageBox( message ); // always "Min: 0 Max: 100" }

[Justin Cooke]

OK. I figured it out and I'm feeling very stupid right now. The base version of CDialog::OnInitDialog() was being called, but not until after I was trying to SetRange() and GetRange(). This explains the bogus results of GetRange() and the fact that my desired range had no effect. I can offer as an excuse the fact that I was handed this code after somebody else wrote it:-D I am still wondering how this code worked before, though. According to the previous developer, he had no problems setting the range, even with the call coming before CDialog::OnInitDialog(). Does anyone know if different platforms or versions of MFC DLLs or something else could have allowed the code to work this way? Thanks.