Add option to fit combobox and listbox width to the window in Domino Designer

Domino Designer provides multiple sizing options for textfields:

• Fixed (Size)
• Fit to window (%)
• Fixed (characters)

For comboboxes and listboxes only the following options are available:

• Fixed (Size)
• Fixed (characters)

For a proper rendering of apps in HCL Nomad on mobile devices, it's important that the comboboxes and listboxes can also auto resize to the window / their current paragraph or table cell width as well.

I analyzed how this size property is stored in the design richtext ($body item).

The "flags" attribute of the CDEMBEDDEDCTL record controls this behavior. I then rewrote a form design element containing a listbox and set the "flags" value to EC_FLAG_FITTOWINDOW. (0x0020). 

The resulting form contained a properly sized combobox. Of course saving the form in Designer reset the property to the value that Designer supports.

Screenshots of before/after are available in this tweet: https://twitter.com/Klehmann79/status/1181193833134120960

It looks like this is a low hanging fruit. Please have somebody check if there is (still) a reason why comboboxes and listboxes cannot autofit to the window.

Karsten Lehmann, Mindoo GmbH