i did several ways and nothing work correctly.
i have 2 controls:
1 - label: with an animation;
2 - the tooltip is showed on top until the label is re-painted.
so is there another way for put the control, always, on top?

is there any message for test when the Z-Order is changed?

the HWND_TOP with SetWindowPos() works fine. but(very important) the WS_CLIPSIBLINGS child style is used when i create the child control for avoid several drawed problems when we use the WS_CLIPCHILDREN style on parent control