must i "free" sub-components of a component?

[erich.wanker]

Hi .. basic delphi question .. but i am not sure at this moment:

must i "free" sub-components of a component?

   

i create in a loop (while not table.eof do begin..) something like this:

object_counter:=object_counter+1;

objekt[object_counter] := TUniPanel.Create(self);   
objekt[object_counter].Parent := UniContainerPanel1; <- the UniContainerPanel is the basic Parent of all "objekt" created Controls

    objekt_bild[object_counter]:= TUniImage.Create(self);
    objekt_bild[object_counter].Parent :=objekt[object_counter]; <- the objekt is the parent

    objekt_text[object_counter]:= TUnilabel.Create(self);
    objekt_text[object_counter].Parent :=objekt[object_counter] <- the objekt is the parent;

    objekt_text_1[object_counter]:= TUnilabel.Create(self);
    objekt_text_1[object_counter].Parent :=objekt[object_counter]; <- the objekt is the parent

    objekt_text_2[object_counter]:= TUnilabel.Create(self);
    objekt_text_2[object_counter].Parent :=objekt[object_counter]; <- the objekt is the parent

 

if i write objekt[x].free   -> are the objekt_bild, objekt_text, objekt_text_1, objekt_text_2  destroyed automaticaly ????

[x11]

12 hours ago, erich.wanker said:

destroyed automaticaly ????

 

12 hours ago, erich.wanker said:

TUniImage.Create(self);

self - this is a owner.

when owner is free then uniimage free too.

Your question is not about unigui, your question is about Delphi.

Difference between Owner and Parent in Delphi http://theprofessionalspoint.blogspot.com/2014/08/difference-between-owner-and-parent-in.html

[Farshad Mohajeri]

There is no need to free components which are created with an owner.

[erich.wanker]

i create and free a lot of times ... i have anxiety that someting could go wrong Serverside with memory  if 1000 users are working with this ??

now i made:

objekt[object_counter] := TUniPanel.Create(self);   
objekt[object_counter].Parent := UniContainerPanel1; 

    objekt_bild[object_counter]:= TUniImage.Create(objekt[object_counter]); <- the owner is now the created TUniPanel
    objekt_bild[object_counter].Parent :=objekt[object_counter]; 

 

if i write objekt[x].free   -> everything what is created for this control should be set free - or ?