Re: Memory Leak - TForm or TStringGrid or DynamicArray - Article 2611 - go-pugleaf

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Re: Memory Leak - TForm or TStringGrid or DynamicArray

#2611

From: Clayton Arends
Date: Mon, 05 Feb 2007 20:55

29 lines
2027 bytes

The data in the "Objects" property is not owned by the string grid.  The 
string grid makes no assumptions as to its contents.  It is there solely for 
the developer's needs.

To delete your objects you need to do something like the following.

  // In the form's destructor
  for (int col = 0, colCount = StringGrid1->ColCount;
       col < colCount; ++col)
  {
    for (int row = 0, rowCount = StringGrid1->RowCount;
         row < rowCount; ++row)
    {
      delete StringGrid1->Objects[col][row];
      StringGrid1->Objects[col][row] = NULL; // optional
    }
  }

The above code assumes that the data stored in the objects array are truly 
pointers to TObject descendants.  If they are not then you will need to 
reinterpret_cast to the appropriate type for delete to work correctly.

> The button click event fills in a number of static objects with random 
> data

What do you mean by static objects?  Can you show some code to explain what 
you mean?

- Clayton

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Subject: Re: Memory Leak - TForm or TStringGrid or DynamicArray
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