Help calling an unmanged function on Windows Mobile

[Paul Sneddon]

Hi,

I'm using VS.NET 2005 RC to create Windows Mobile apps. I'm trying to call
the following shell function which is new on Windows Mobile 5.

SNDGETSND
http://msdn.microsoft.com/library/de...ndSetSound.asp

I basically just need to be able to get the device ringer mode (e.g. On Off
Vibrate) this seems the way to do it in WM5.

I can set up the declaration (dll import, structs, pointers etc) but when I
call it I get a "Not Supported" exception. I tried setting various unmanged
directives on the structs and parameters which stops the exception but the
call doesnt have a return value and does not seem to work, but I dont really
know what I'm doing when it comes to calling unmanged code.

Could someone proide we will a basic working example for declaring and
calling this function and I should be able to work out everything else from
there. I got that frustrated that I deleted my example code..

Paul

[Paul Sneddon]

Hi,

I get it to kind of work but everytime I call the function, no mater what
enum value I pass it always sets the sound to on???

[DllImport("aygs hell.dll", CharSet = CharSet.Unicode )]

public static extern Int32 SndSetSound

(SND_EVENT seSoundEvent,re f SNDFILEINFO pSoundFileInfo, bool fSuppressUI);

[StructLayout(La youtKind.Sequen tial)]

public struct SNDFILEINFO

{

[MarshalAs(Unman agedType.LPTStr , SizeConst = 260)]

public string szPathName;

[MarshalAs(Unman agedType.LPTStr , SizeConst = 260)]

public string szDisplayName;

public SND_SOUNDTYPE sstType;

}
public enum SND_SOUNDTYPE

{

SND_SOUNDTYPE_O N = 0x0001,

SND_SOUNDTYPE_F ILE = 0x0002,

SND_SOUNDTYPE_V IBRATE = 0x0004,

SND_SOUNDTYPE_N ONE = 0x0008,

SND_SOUNDTYPE_L AST = SND_SOUNDTYPE_N ONE

}

public enum SND_EVENT

{

SND_EVENT_ALL,

SND_EVENT_RINGT ONELINE1,

SND_EVENT_RINGT ONELINE2,

SND_EVENT_LAST = SND_EVENT_RINGT ONELINE2

}

Paul

"Paul Sneddon" <ma**@paulsnedd on.co.uk> wrote in message
news:xm******** *******@text.ne ws.blueyonder.c o.uk...

Hi,

I'm using VS.NET 2005 RC to create Windows Mobile apps. I'm trying to
call the following shell function which is new on Windows Mobile 5.

SNDGETSND
http://msdn.microsoft.com/library/de...ndSetSound.asp

I basically just need to be able to get the device ringer mode (e.g. On
Off Vibrate) this seems the way to do it in WM5.

I can set up the declaration (dll import, structs, pointers etc) but when
I call it I get a "Not Supported" exception. I tried setting various
unmanged directives on the structs and parameters which stops the
exception but the call doesnt have a return value and does not seem to
work, but I dont really know what I'm doing when it comes to calling
unmanged code.

Could someone proide we will a basic working example for declaring and
calling this function and I should be able to work out everything else
from there. I got that frustrated that I deleted my example code..

Paul

[Ignacio Machin \( .NET/ C# MVP \)]

Hi,

I think you will get a better answer in the CF
group:microsoft .public.dotnet. framework.compa ctframework
cheers,
--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation
"Paul Sneddon" <ma**@paulsnedd on.co.uk> wrote in message
news:xm******** *******@text.ne ws.blueyonder.c o.uk...

Hi,

I'm using VS.NET 2005 RC to create Windows Mobile apps. I'm trying to
call the following shell function which is new on Windows Mobile 5.

SNDGETSND
http://msdn.microsoft.com/library/de...ndSetSound.asp

I basically just need to be able to get the device ringer mode (e.g. On
Off Vibrate) this seems the way to do it in WM5.

I can set up the declaration (dll import, structs, pointers etc) but when
I call it I get a "Not Supported" exception. I tried setting various
unmanged directives on the structs and parameters which stops the
exception but the call doesnt have a return value and does not seem to
work, but I dont really know what I'm doing when it comes to calling
unmanged code.

Could someone proide we will a basic working example for declaring and
calling this function and I should be able to work out everything else
from there. I got that frustrated that I deleted my example code..

Paul