To resize forms, I have tried 2 resizers available in download section Both worked well for me.

ATresizer 2.7a total form resizer - ID 1409 is the one that I use.

AutoResize Version 1.5a - ID 1374 I have tried this one and it works very well. You drop it on a form and it handles resizing all controls. No code required, but resize is not as smooth due to the timer.

These are basically used for interactive resizing forms at runtime, not necessarily to automatically maximize and resize, however you can make it do that.

ATresizer allows the user to resize a form, it "remembers" the previous resize state and has a popup form that allows user to restore to original and tweak resizer settings. It is a program class that you instantiate in the form init method and call its resize method in resize event of the form to automatically adjusts each control when the form is resized.

Autoresize class uses a timer event to detect form resize and automatically adjusts each control when the form is resized.

To force forms to fill screen and resize, using one of these set thisform.windowstate = 2 in the form activate event.

Hope this helps.