I am thinking of two options here:
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1) The one you suggested (two screens) but with small change that will ease your life.
Create two main screens say 100 and 200. On 100 create two subscreen areas and a container (for ALV). On 200 create one subscreen area and the enlarged container. Create two subscreens i.e 101, 102. When screen 100 is called load 101, 102 and ALV. When you request to hide second block (102), switch to screen 200. Load here 101 and same ALV.
Note!
You don't need recreate ALV + custom container each time. you can switch b/w containers by relinking ( LINK method).
For this refer [this thread|] or Uwe's blog [Against All Odds - Programming of Communicating (S)ALV Grid Controls|http://www.sdn.sap.com/irj/scn/weblogs?blog=/pub/wlg/21504] [original link is broken] [original link is broken] [original link is broken];
This way you reuse same controls in different screens. Please also note that hidding technique for subscreens is much easier than for each control individually.
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2) This one will require docking container.
Create a screen with two subscreen areas where you will load your subscreens and docking container (docked at right). During "hide" unload subscreen 102, and extend docking container with embeded ALV to the left side.
The downside of this option is that you are able to literally cover your classic controls with docking container (container on top of them) if user drag and drop it to much to the left. Don't remeber now if you can't fix that extension, so he could not move it. This "bug" however doesn't apply when you dock your container on the left. Then you are able to change the extension and all the other controlls will follow it.
Regards
Marcin
Bluesky
