more flicker with owner draw button and backbuffer, help please?

[turnbui]

hi all,
i'm having trouble with flicker and an owner draw button. in the debugger i see the WM_PAINT msg
comes before the WM_DRAWITEM. as the hdc is different in these 2 msgs i end up writing to the
button area twice causing the flicker. can someone clue me in as to what i need to do please?

case WM_DRAWITEM: // 1st is WM_PAINT does DrawHello2 then WM_DRAWITEM
DrawControl ( hwnd, (LPDRAWITEMSTRUCT) lParam );

thanks,
iant.

[coder777]

Try WS_CLIPCHILDREN:

https://msdn.microsoft.com/en-us/library/czada357.aspx

[turnbui]

thanks.
i added
case WM_CTLCOLORBTN:
SetBkMode( (HDC)wParam, TRANSPARENT);
return (LRESULT) GetStockObject(NULL_BRUSH);

and
changed
CreateWindow
to
CreateWindowEx ( WS_EX_TRANSPARENT,
and it appears to have stopped the slight flicker.
i'll now read up on your WS_CLIPCHILDREN to do it the correct way.
thanks