how to detect scrollbars (horizontal) in CListCtrl?

[nss]

I need to change the height of my CListCtrl when scrollbars are not present (horizontally). How can I , on the fly detect if the control has scrollbars or not? its columns keep changing so sometimes thee is a scrollbar, and sometimes not... Thanks, ns

[valikac]

One solution is to add messages handlers for both horizontal scroll bar and vertical scroll bar. WM_HSCROLL - OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar) WM_VSCROLL - OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar) Kuphryn

[RaviBee]

Accumulate the width of each column. If the total exceeds the list control's client area's width, you've got scrollbars. Use GetColumn() to get the column widths and GetClientRect() to get the client rect. /ravi Let's put "civil" back in "civilization" http://www.ravib.com ravib@ravib.com

[nss]

Thanks for the ideas....its a funny problem. When there are sbars, I've shrunk the control down so all you see are the headers and the scrollbar. When there arent enough columns populated, the sb vanishes, and the area it took up, is visible to the user because now the first row of the control shows. I have to make it somehow that it doesnt get this blank area...only the header should show.

[RaviBee]

Hmm, you could try using one of SPI_ constants (none seemed obvious) in GetSystemMetrics() to get the height of the list control's header control, and use this value to resize the control. Alternatively, you could just hide the list control and show a dummy one (of fixed height) with the same columns. But if you want my honest opinion :) the concept of a list control that changes its height seems suspect at first glance. /ravi Let's put "civil" back in "civilization" http://www.ravib.com ravib@ravib.com

[nss]

This part is a real pain, I'm just tossing about ideas. It uses a CP class, and it does okay sort of but not really. Like I repopulate the ctrl each time with new headers and data (new # of columns) . Somethings going horribly wrong with my logic, and I'm staring at it.....aaargh! Thanks for your ideas though. Soon as the functionality works, I'l apply the cosmetic part..:)