I've created the following TGridPanel in the IDE:
This TGridPanel is inside a TPageControl:TTabSheet, which is on a TFrame.
TFrame => TPageControl => TTabSheet => TGridPanel
During Design Time in the IDE everything is fine.
However, when I drop the TFrame on empty (main) form and then hit the Compile button, all ColumnSpan and RowSpan settings I made in the TFrame are reset when the compilation finishes.
When I then run the application, I get an EGridPanelException saying:
Error reading ...Panel_Setup_Content.ColumnCollection: Cannot delete a column that contains controls
and the application terminates after hitting "OK".
Additionally, when I close the project and re-open it (with the TFrame dropped on the main form), I get the exact same error + "Ignore the error and continue ? Note: Ignoring the error may cause components to be deleted or property values to be lost."
When I use Notepad to remove the TFrame from the main Form DFM I can open the project again and also the TFrame file without error messages or problems.
The problems occur as soon as I drop the TFrame on the main form.
Is this a Delphi issue ? Or is it me doing something wrong ?