I use Lazycat's "WM_DROPFILES_FUNC" for a while with no problem but yesterday i've notice a lack in this function: Files with unicode char in their name aren't supported so i've search the unicode function... And i've found it: "DragQueryFileW" instead of DragQueryFile or DragQueryFileA for ANSI #include <GUIConstants.au3> #include <WindowsConstants.au3> Global $WM_DROPFILES = 0x233 Global $gaDropFiles[1], $str = "" ### Koda GUI section start ### $hGUI = GUICreate("Test", 400, 200