dwrbudr

If all or most of the comboboxes need to be populated with the same items, then cache the Items of one combobox to a TStringList. Then use ColorBox1.Items := CachedColorItems instead of setting its Style. On my side it increases the performance from 20ms to 15ms

Announced yesterday and still not available in my.embarcadero.com

Why they've annouced the patch on their blog while it is still not available to download is beyond my imagination.

You could try https://www.imageen.com/

On my side, Sync Prototypes is not working in Delphi 12, very frustrating. Ctrl+Click also don't work or if it works it takes more than 10-15 sec. Auto-completion also don't work... so another buggy release. Compilation does not work as well - random internal compiler errors or some error and the IDE points to a line after the end. in some unit, so I have to Build the project every time which is quite time consuming.

Use the same calculations for Left and Top. 96 is the default screen pixels per inch at 100% scaling, e.g. Screen.DefaultPixelsPerInch Check your display options in Windows to see what screen scaling you're using, probably 125% or 150%

Try pnlRuntime.Height := MulDiv(350, Screen.PixelsPerInch, 96);

What is the DPI your monitor runs at?

In Delphi 12 EMB has changed the way DoubleBuffered works in DRP session and added DoubleBufferedMode property. So inspect the source/documentation on that or just play with those properties.

Or NextGrid, but I'm not sure if it supports the Ctrl ans Shift selection requirement.

Or use a semicolon separated list

Search the registry HKEY_CURRENT_USER\Software\Embarcadero\BDS\23.0\ for ParnassusCoreEditor.dll and update or delete the key

Delphi 12 has some changes related to the DoubleBuffered property and RDM. Try to play with form's DoubleBuffered and the newly introduced DoubleBufferedMode properties.

It might happen that your PATH environment variable contains the path to the previous Delphi version BPL folder, like: "C:\Users\Public\Documents\Embarcadero\Studio\22.0\Bpl" If you only use Delphi 12, then delete the 22.0\Bpl folder and remove the entry from the PATH

When you press Ctrl+F 'Whole words' option is checked most of the time, randomly.