Hi all, Got it working within a WM_NOTIFY handler: #include <GuiConstantsEx.au3> #include <WindowsConstants.au3> #include <FontConstants.au3> #include <GuiListView.au3> Global Const $tagNMCUSTOMDRAW = "struct;" & $tagNMHDR & ";dword dwDrawStage;handle hdc;" & $tagRECT & _ ";dword_ptr dwItemSpec;uint uItemState;lparam lItemlParam;endstruct" ; Title