in TComboBox ::
When a combo box is in dropped down state Windows draws a list box type of control to display combo box items for selection.
When a combo box is in dropped down state Windows draws a list box type of control to display combo box items for selection.
When the length (of a string) of items exceeds the width of the combo box, the items are displayed as cut-off!
Calling CB_SETDROPPEDWIDTH and WM_CTLCOLORLISTBOX to the rescue...
Read the full article to learn how to Resize The Width Of The Drop Down List To Ensure No Cut-Off
Related:

D4 has a problem with Canvas.TextWidth() function. How to solve it? Thanks, Peter