[Solved] Trying to implement TStringGrid with rowhide. Problem with runtime

[br4d]

Please bear with my poor english.

I want to extend TStringGrid to have a hide row function (new class TStringGridExt).
The idea I've got from older post in this forum is to use a container to store the hidden row.

For the container I've chosen another TStringGrid (also it is a TStringGrid with a variable backUp of type StringGrid).
This way I can simply check visually how the class work by assigning a second StringGrid created at design time as backUp.

Everything has worked well, but now I need to use a backUp TStringGrid which is created on run time. Thus not visible nor accessible visually.

Code: Pascal  [Select][+][-]

1.  
2. if (backUp = nil) then
3.     backUp:= TStringGrid.Create(Self.Parent); //Self is a TStringGrid
4.  
5.  
6. if (backUp.RowCount=0) then exit; //this line will create an error.            
7.  

What have I missed by the manual creation of backUp?

Thanks,
Brad

[br4d]

Nevermind.
My mistake was not understanding that the Create constructor won't be executed for a component defined at design time.

Also the backUp is not properly initialized (but not nil).

Thanks for reading