Additional column with checkboxes in DBGrid (again)

[SibBear]

I've added an additional column containing checkboxes to DBGrid. Checkboxes are indicating which records should be exported. Now I need to:
- programmatically check/uncheck any checkbox basing on its record number in the grid;
- read a state of any checkbox.
How can I do this?

Thanks,
Michael.

[jesusr]

check http://wiki.lazarus.freepascal.org/Grids_Reference_Page#Selecting_Records_in_a_DBGrid_using_checkboxes

[taazz]

you seem a bit confused, so let me say this, if you think in terms of subject - view then a dataset is the subject aka the object with the data and a dbgrid is the view aka a graphical representation of the data in the dataset. You do not ask the dbgrid for the values you go directly to the dataset and retrieve the data.