DirectX and C#

[MalGanis]

So im TabPage form and within that a Panel form. DirectX is binded with that panel. But im having some issues:

• If i draw something in that panel with directX, when a TabPage opens/is selected/, it is blank, but if i resize (maximize, minimize,..) main window drawn stiff shows. I suspect Invalidate function is somehow overwriting directx.
• If the image on directX is bigger than the panel, page itself it wont show scroll bars. I've tried setting propertie Width, Height of the panel or page but it wont work (panel has dock set to fill)

Any ideas?

[MalGanis]

Figured part of the first issue. I had to invalidate PageTab after paint and set its style in ctor:

SetStyle( ControlStyles.AllPaintingInWmPaint, true );

If true, the control ignores the window message WM_ERASEBKGND to reduce flicker. Now when i open a new tab it shows correctly, but if i change to another tab it still goes blank.