Double buffered ListBox

Question

I have a CheckedListBox (WinForms) control (which inherits from ListBox; googling shows that the problem is with ListBox) that is anchored to all four sides of its form. When t

Answer 1

You could check if switching to a ListView Control with checkboxes improves matters. It's not as easy to deal with (but hey, the WinForms ListBox isn't a stroke of genius either), I found that it's resize behavior with DoubleBuffered=true is bearable.

Alternatively, you could try to reduce flicker by overriding the parent forms background drawing - either providing a hollow brush, or overriding WM_ERASEBKND by doing nothing and returning TRUE. (that's ok if your control covers the entire client area of the parent form, otherwise you'd need a more complex background drawing method.

I've used this successfully in Win32 applications, but I don't know if the Forms control adds some of it's own magic that renders this nonfunctional.