;get handle to child SysHeader32 control of ListView
Global $hHeader = HWnd(GUICtrlSendMsg($ListView1, $LVM_GETHEADER, 0, 0))
;Turn off theme for header
DllCall("uxtheme.dll", "int", "SetWindowTheme", "hwnd", $hHeader, "wstr", "", "wstr", "")
;subclass ListView to get at NM_CUSTOMDRAW notification sent to ListView
Global $wProcNew = DllCallbackRegister("_LVWndProc", "ptr", "hwnd;uint;wparam;lparam")
Global $wProcOld = _WinAPI_SetWindowLong($ListView1, $GWL_WNDPROC, DllCallbackGetPtr($wProcNew))