TComboBox subclasses the Microsoft Windows' COMOBOX window class from the Windows Common Control library. COMBOBOX provides the dropdown, so you should either replace that, or completely write your TYazComboBox class (which some 3rd party Delphi control vendors did). Both options are hard.
TComboBox
subclasses the Microsoft Windows'COMOBOX
window class from the Windows Common Control library.COMBOBOX
provides the dropdown, so you should either replace that, or completely write yourTYazComboBox
class (which some 3rd party Delphi control vendors did). Both options are hard.