Pocket PC Notifications

[Steve Brown]

Hi,

Has anyone successfully worked with PPC Notifications using VB.NET or C#,
and the Compact Framework? I'm trying to use the API to do so, but think I
have problems with the way my SHNOTIFICATIONDATA structure is defined.

Any help would be EXTREMELY appreciated!

Thanks,

Steve

[Seth Demsey [MS]]

Hey --

Here's some work that should give you a helping hand:

using System;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace Pocket_Wx
{
public class Notification
{
#region API Declarations

private const uint SHNP_INFORM = 0x1B1;
private const uint SHNP_ICONIC = 0x0;

[StructLayout(LayoutKind.Sequential)]
public unsafe struct SHNOTIFICATIONDATA
{
public uint cbStruct;
public uint dwID;
public uint npPriority;
public uint csDuration;
public IntPtr hicon;
public uint grfFlags;
public Guid clsid;
public IntPtr hwndSink;
public void* pszHTML;
public void* pszTitle;
public uint lParam;
}

[DllImport("aygshell.dll", CallingConvention=CallingConvention.Cdecl,
EntryPoint="#155")]
private static extern int SHNotificationAdd(ref SHNOTIFICATIONDATA
shinfo);

//Registry APIs
[DllImport("rapi.dll")]

private static extern Int32 CeRegOpenKeyEx(
int hKey,
string lpszSubKey,
int ulOptions,
int samDesired,
ref int phkResult);

[DllImport("rapi.dll")]
public static extern int CeRegCloseKey(int hKey);

#endregion

#region Constructor & Deconstructor

public Notification()
{

}

#endregion

#region Methods

public unsafe void Add(string Message)
{
SHNOTIFICATIONDATA shinfo = new SHNOTIFICATIONDATA();
/*
* Define teh WAV file to play when an alert is displayed
*
[HKEY_CURRENT_USER\ControlPanel\Notifications\{85EE47B2-57D7-EEFE-8E7A-36480
443D062}]
@="Notify Test"
"Wave"="Alarm3"
"Duration"=dword:00000000
"Options"=dword:00000008
*/
//Null-terminate the strings
string Title = "\0";
Message += "\0";

shinfo.cbStruct = (uint)Marshal.SizeOf(shinfo);
shinfo.dwID = 1;
shinfo.npPriority = SHNP_INFORM;
shinfo.csDuration = 10;

fixed (char* pTitle = Title.ToCharArray())
{
fixed (char* pHTML = Message.ToCharArray())
{
shinfo.pszTitle = pTitle;
shinfo.pszHTML = pHTML;

try
{
int err = SHNotificationAdd(ref shinfo);

if (err != 0)
{
throw (new Exception("Invalid return from SHNotificationAdd"));
}
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}
}

public unsafe void Add(string Message, string Title)
{
SHNOTIFICATIONDATA shinfo = new SHNOTIFICATIONDATA();

//Null-terminate the strings
Title += "\0";
Message += "\0";

shinfo.cbStruct = (uint)Marshal.SizeOf(shinfo);
shinfo.dwID = 1;
shinfo.npPriority = SHNP_INFORM;
shinfo.csDuration = 10;

fixed (char* pTitle = Title.ToCharArray())
{
fixed (char* pHTML = Message.ToCharArray())
{
shinfo.pszTitle = pTitle;
shinfo.pszHTML = pHTML;

try
{
int err = SHNotificationAdd(ref shinfo);

if (err != 0)
{
throw (new Exception("Invalid return from SHNotificationAdd"));
}
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}
}

public unsafe void Add(string Message, string Title, uint Duration)
{
SHNOTIFICATIONDATA shinfo = new SHNOTIFICATIONDATA();

//Null-terminate the strings
Title += "\0";
Message += "\0";

shinfo.cbStruct = (uint)Marshal.SizeOf(shinfo);
shinfo.dwID = 1;
shinfo.npPriority = SHNP_INFORM;
shinfo.csDuration = Duration;

fixed (char* pTitle = Title.ToCharArray())
{
fixed (char* pHTML = Message.ToCharArray())
{
shinfo.pszTitle = pTitle;
shinfo.pszHTML = pHTML;

try
{
int err = SHNotificationAdd(ref shinfo);

if (err != 0)
{
throw (new Exception("Invalid return from SHNotificationAdd"));
}
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}
}

public unsafe void Add(string Message, string Title, IntPtr hIcon)
{
SHNOTIFICATIONDATA shinfo = new SHNOTIFICATIONDATA();

//Null-terminate the strings
Title += "\0";
Message += "\0";

shinfo.cbStruct = (uint)Marshal.SizeOf(shinfo);
shinfo.dwID = 1;
shinfo.npPriority = SHNP_INFORM;
shinfo.csDuration = 10;
shinfo.hicon = hIcon;

fixed (char* pTitle = Title.ToCharArray())
{
fixed (char* pHTML = Message.ToCharArray())
{
shinfo.pszTitle = pTitle;
shinfo.pszHTML = pHTML;

try
{
int err = SHNotificationAdd(ref shinfo);

if (err != 0)
{
throw (new Exception("Invalid return from SHNotificationAdd"));
}
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}
}

#endregion
}
}

Seth Demsey
Program Manager
Net Compact Framework

This posting is provided "AS IS" with no warranties, and confers no rights.