resize panels smoothly

[Ching-Lung]

Hi,

I have a windows form with a button and 2 panels. All
Panel.Dock = DockStyle.Left

-------------
| | |
| 1 | 2 |
| | |
-------------

When I click on the button, I want panel 1 to shrink and
panel 2 to grow in width:

int i = p1.Width;
p1.Width = p2.Width;
p2.Width = i;
this.Refresh();

My question is... how to make the shrinking and growing
animation look smooth and not flickering on the monitor?

I tried to use timer, but it's completely unacceptable
for user's experience.

Please help!

Thanks,
Ching-Lung

 

[Bob Powell [MVP]]

The flickering is probably due to the fact that the panel's
OnPaintBackground cannot be turned off. Consider deriving a class from panel
that prevents this from happening either by setting the appropriate control
styles or by overriding the OnPaintBackground method to do nothing.

--
Bob Powell [MVP]
C#, System.Drawing

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