Hi. wanna ask about keypress and selection changed. When i try this code : Sub App_Start Form1.Show End Sub Sub textbox1_KeyPress (key) msgbox ("tes1") End Sub Sub listbox1_SelectionChanged (Index, Value) msgbox("tes2") End Sub ----- At the runtime it works properly, so when i type something at textbox the msgbox opened. And when i select different value at listbox the msgbox opened correctly. But after it has been compiled, the compiled file (both for device and windows) is not working properly. There's completely no response when i typed something at textbox or select different value at listbox. The msgbox doesn't appear. Something wrong? I compiled with Basic4ppc v6.05 and v6.30. With Basic4ppc v6.01 it works.. Weird... Thank you..