Rendering Context With Docking

[serkank]

Long time Later i found where i do wrong
if handle is change its need use SetPixelFormat and ActivateRenderingContext

my wrong i tryed to delete RC,DC ..

pfd.dwFlags := PFD_DRAW_TO_WINDOW OR PFD_SUPPORT_OPENGL OR PFD_DOUBLEBUFFER;
SetPixelFormat ( DC, ChoosePixelFormat ( DC, @pfd ), @pfd );
ActivateRenderingContext( DC, wglCreateContext ( DC ), TRUE );