Board index » delphi » Tracking Parent

2003-11-16 02:05:35 PM
delphi187
How can my visual component detect parent form or owner form "close down" ,
"sized" or "moved" without messing with WndProc or CN_Command Notification.
It's already Delphi 7 and it should be easier now isn't it.
Jirayu
 

Oh, I found it under CM_CancelMode;
procedure CMCancelMode(var Message: TCMCancelMode); message CM_CANCELMODE;
Jirayu
"Jirayu" <XXXX@XXXXX.COM>writes

In article <XXXX@XXXXX.COM>, Jirayu writes:
two options:
a) require the host form to actively pass the messages or some kind of
notification to your control.
b) subclass the host form to intercept the messages.
property, for a long time now (since D3 i think). Do not use API-style
subclassing (SetWindowLong) with VCL controls since such a control may
recreate its window handle if certain changes are made to its properties
or even to properties of a control up the parent chain.
Peter Below (TeamB)
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