Playing sound while Device is in standby mode

Question

Dear All,
I am developing a program like an alarm, which will play a sound at a specified time, but if the device is in standby mode, i can't play the sound, so how could I play sound while it is in standby mode.

note: i am using VS.net 2005 C#

Hoang Nguyen Van · Answer

Hi all, I have doing it last nigh and i want to share it with you! I think, you should use Invoke method to got some functions in API or MFC to play sound. You can use some prototype like this to get some functions. I mean playsound function to play a song with .wav using System; using System.Runtime.InteropServices; namespace ClassSound { /// /// Summary description for InvokeSound. /// public class InvokeSound { public InvokeSound() { } [DllImport("coredll", EntryPoint="PlaySound", CharSet=CharSet.Unicode, CallingConvention=CallingConvention.Winapi,SetLastError=false)] public static extern bool ExplicitSyntax_PlaySound( string szSound, IntPtr hMod, int flags ); //This method uses the default values for all the arguments of the DllImport attribute instead //of explicitly providing values for them like the ExplicitSyntax_PlaySound procedure above. [DllImport("coredll")] public static extern bool PlaySound (string szSound, IntPtr hMod, int flags); [DllImport("coredll")] public static extern IntPtr MCIWndCreate(IntPtr hwndParent, IntPtr hInstance, int dwStyle, string szFile); [DllImport("coredll")] public static extern long MCIWndClose(IntPtr hwnd); [DllImport("coredll")] public static extern void MCIWndDestroy(IntPtr hwnd); [DllImport("coredll")] public static extern long MCIWndEnd(IntPtr hwnd); [DllImport("coredll")] public static extern long MCIWndHome(IntPtr hwnd); [DllImport("coredll")] public static extern long MCIWndPause(IntPtr hwnd); [DllImport("coredll")] public static extern long MCIWndPlay(IntPtr hwnd); [DllImport("coredll")] public static extern long MCIWndResume(IntPtr hwnd); [DllImport("coredll")] public static extern long MCIWndStop(IntPtr hwnd); [DllImport("coredll")] public static extern long MCIWndSetVolume(IntPtr hwnd, int iVol); [DllImport("coredll")] public static extern void MCIWndSetRepeat(IntPtr hwnd, bool f); [DllImport("coredll")] public static extern IntPtr GetSafeHwnd(); [DllImport("coredll")] public static extern IntPtr AfxGetInstanceHandle(); } } after that you can use these function as well as API in win32 good luck

Playing sound while Device is in standby mode

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