* Use the LayoutKind.Sequential structure attribute. * You should fill the dwExtraInfo member (set it to the value returned by GetMessageExtraInfo). * The scan code should be set to the value returned by MapVirtualKey applied to the virtual key code. * Depending on whether it's an extended key, you should also specify the KEYEVENTF_EXTENDEDKEY flag. * You should use IntPtr for pointers. Using Int32 will break compatibility of your application with 64-bit operating systems. I recommend to use the definitions on P/Invoke.net: SendInput[^] Best regards Dominik Too many passwords to remember? Try KeePass Password Safe!

Hi, the id parameter in RegisterHotkey must be unique (your _Mod is not good); it is used internally to discriminate the different hotkeys; I once used the following code: int chr=(int)name\[0\]; if (chr>=(int)'a' && chr<=(int)'z') chr+=(int)'A'-(int)'a'; // identifier must be unique, so we use a hash code int ident=GetType().GetHashCode()+(modifiers<<16)+chr; but that is just one attempt to get unique numbers for some command based on its name (some textual description) and the modifier keys (similar to Control.ModifierKeys) all inside a form. :) Luc Pattyn try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] } catch { [Google] }