Title: Capture mouse as it exits a control
Use CM_MOUSEENTER and CM_MOUSELEAVE messages:
TYourObject = class(TAnyControl)
...
private
procedure CMMouseEnter(var AMsg: TMessage); message CM_MOUSEENTER;
procedure CMMouseLeave(var AMsg: TMessage); message CM_MOUSELEAVE;
...
end;
implementation
procedure TYourObject.CMMouseEnter(var AMsg: TMessage);
begin
MessageBox(Parent.Handle,'Mouse enter','Message',MB_OK);
end;
procedure TYourObject.CMMouseLeave(var AMsg: TMessage);
begin
MessageBox(Parent.Handle,'Mouse leave','Message',MB_OK);
end;