Solutions for some problems when converting Delphi projects to Lazarus projects

1) When you create a form but no widget appears
Solution:
You use Tools > convert Delphi unit into Lazarus unit in Lazarus IDE.
However, Lazarus IDE forgot to insert the following directive to your unit source code:
initialization
{$i unit.lrs}
2) When you get the following error message: identifier LazarusResource not found
Solution:
Add LResource unit into uses clause in your unit source.
3) When you get the following error:
and the cursor stop here:


Solution:
Add Interfaces unit into uses clause in your unit source code.