Win32: Reading WS_VSCROLL style from a combo box (or list box)

Question

I'm iterating through the controls in a dialog and I'm trying to determine if a combobox was created with the WS_VSCROLL style.

The style, obtained from GetWindowLong(hwnd, GWL_STYLE), doesn't contain the WS_VSCROLL bit (0x200000), even when I know it was set on create.

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Clarification: I am looking to see if the ComboBox was created with the WS_VSCROLL style. Calling GetWindowLong() (or using spy++) to get the style of the combo's listbox will include WS_VSCROLL if a scrollbar is needed to based on the current contents of the list.

I am trying to determine if the ComboBox was created with WS_VSCROLL, not if a scrollbar is currently visible.

Answer 1

Then something removed the style. Styles don't just dissapear (AFAIK). What does Spy++ or WinCheat tell you?

Also keep in mind comboboxes consist of more than one HWND. There's the outer control, a text box (if applicable), and a list box. You're probably more interested in the list box's style.

EDIT: Use GetComboBoxInfo to programmatically get the HWND of the list box.