gdkWindowInvalidateRegion       package:RGtk2       R Documentation

_g_d_k_W_i_n_d_o_w_I_n_v_a_l_i_d_a_t_e_R_e_g_i_o_n

_D_e_s_c_r_i_p_t_i_o_n:

     Adds 'region' to the update area for 'window'. The update area is
     the region that needs to be redrawn, or "dirty region." The call
     'gdkWindowProcessUpdates' sends one or more expose events to the
     window, which together cover the entire update area. An
     application would normally redraw the contents of 'window' in
     response to those expose events.

_U_s_a_g_e:

     gdkWindowInvalidateRegion(object, region, invalidate.children)

_A_r_g_u_m_e_n_t_s:

'object': ['GdkWindow']  a 'GdkWindow'

'region': ['GdkRegion']  a 'GdkRegion'

'invalidate.children': [logical] 'TRUE' to also invalidate child
          windows 

_D_e_t_a_i_l_s:

     GDK will call 'gdkWindowProcessAllUpdates' on your behalf whenever
     your program returns to the main loop and becomes idle, so
     normally there's no need to do that manually, you just need to
     invalidate regions that you know should be redrawn.

     The 'invalidate.children' parameter controls whether the region of
     each child window that intersects 'region' will also be
     invalidated. If 'FALSE', then the update area for child windows
     will remain unaffected. See gdk_window_invalidate_maybe_recurse if
     you need fine grained control over which children are invalidated.

_A_u_t_h_o_r(_s):

     Derived by RGtkGen from GTK+ documentation

