for resize or readraw the control i do:
Code:
SetWindowPos(hwnd, 0, 0, 0, 0, 0,
            SWP_NOZORDER|SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE|
            SWP_DRAWFRAME | SWP_FRAMECHANGED|SWP_NOCOPYBITS);
but theses flags: SWP_DRAWFRAME and SWP_FRAMECHANGED give me the flicker.
if i have the control transparent and don't use these code, the control isn't redraw, when i change the text
so how can redraw the control without flicker? or 'clean' correctly the control, before give it the next text?