I created a button of sub-type DG_BT_SPLIT and tried to get the selected item.
In dialog class, you can do this by creating a callback function for SplitButtonPopupChanged and get the selected item by calling SplitButton->GetSelectedItem().
But I am doing this using the Dialog Manager and I can't find the equivalent function of SplitButton->GetSelectedItem(). Since the message data is always zero, I presumed it was DGSplitButtonGetSelectedItem(), but I was wrong.
~ReignBough~
ARCHICAD 26 INT (from AC18)
Windows 11 Pro, AMD Ryzen 7, 3.20GHz, 32.0GB RAM, 64-bit OS