890817 - a window inserted in a dockable pane

i think that i've got a bit closer to the symptom. in a window when a child window is disabled the click is sent to its parent, even though it's on the child window. i think this is why the dockable pane receives the click. right?
i replaced my custom control with an edit box and this didn't happen again and clicking on the edit control inserted in the dockable pane was sent to the edit control itself. i tried a static text too. it was not disabled, but the click was sent to the dockable pane (parent). i also tried a disabled button. the click was sent to the parent again.
now my question is that how can i make the click be sent to the custom control? what causes the click to be dispatched to the parent window, not the child itself.
in response to ur question, i may say that the custom control is created as a child of the dockable pane.
thx