private bool SysTrayCallback(uint message, SafeNotifyIconData nicData)
{
if (nicData.hWnd == IntPtr.Zero)
{
return(false);
}
NotifyIcon trayIcon = new NotifyIcon(this, nicData.hWnd);
trayIcon.UID = nicData.uID;
lock (_lockObject)
{
if ((NIM)message == NIM.NIM_ADD || (NIM)message == NIM.NIM_MODIFY)
{
try
{
bool exists = false;
bool titleChanged = false;
// hide icons while we are shell which require UWP support & we have a separate implementation for
if (nicData.guidItem == new Guid(VOLUME_GUID) && ((EnvironmentHelper.IsAppRunningAsShell && EnvironmentHelper.IsWindows10OrBetter) || GroupPolicyHelper.HideScaVolume))
{
return(false);
}
// hide icons per group policy
if ((nicData.guidItem == new Guid(HEALTH_GUID) && GroupPolicyHelper.HideScaHealth) ||
(nicData.guidItem == new Guid(MEETNOW_GUID) && GroupPolicyHelper.HideScaMeetNow) ||
(nicData.guidItem == new Guid(NETWORK_GUID) && GroupPolicyHelper.HideScaNetwork) ||
(nicData.guidItem == new Guid(POWER_GUID) && GroupPolicyHelper.HideScaPower))
{
return(false);
}
foreach (NotifyIcon ti in TrayIcons)
{
if (ti.Equals(nicData))
{
exists = true;
trayIcon = ti;
break;
}
}
if ((NIF.STATE & nicData.uFlags) != 0)
{
trayIcon.IsHidden = nicData.dwState == 1;
}
if ((NIF.TIP & nicData.uFlags) != 0 && !string.IsNullOrEmpty(nicData.szTip))
{
trayIcon.Title = nicData.szTip;
titleChanged = true;
}
if ((NIF.ICON & nicData.uFlags) != 0)
{
if (nicData.hIcon != IntPtr.Zero)
{
System.Windows.Media.ImageSource icon = IconImageConverter.GetImageFromHIcon(nicData.hIcon, false);
if (icon != null)
{
trayIcon.Icon = icon;
}
else if (icon == null && trayIcon.Icon == null)
{
// Use default only if we don't have a valid icon already
trayIcon.Icon = IconImageConverter.GetDefaultIcon();
}
}
else
{
trayIcon.Icon = null;
}
}
trayIcon.HWnd = nicData.hWnd;
trayIcon.UID = nicData.uID;
if ((NIF.GUID & nicData.uFlags) != 0)
{
trayIcon.GUID = nicData.guidItem;
}
if (nicData.uVersion > 0 && nicData.uVersion <= 4)
{
trayIcon.Version = nicData.uVersion;
}
if ((NIF.MESSAGE & nicData.uFlags) != 0)
{
trayIcon.CallbackMessage = nicData.uCallbackMessage;
}
if (!exists)
{
// default placement to a menu bar-like rect
trayIcon.Placement = defaultPlacement;
// set properties used for pinning
trayIcon.Path = ShellHelper.GetPathForWindowHandle(trayIcon.HWnd);
trayIcon.SetPinValues();
if (trayIcon.Icon == null)
{
trayIcon.Icon = IconImageConverter.GetDefaultIcon();
}
TrayIcons.Add(trayIcon);
if ((NIF.INFO & nicData.uFlags) != 0)
{
handleBalloonData(nicData, trayIcon);
}
ShellLogger.Debug($"NotificationArea: Added: {trayIcon.Title} Path: {trayIcon.Path} Hidden: {trayIcon.IsHidden} GUID: {trayIcon.GUID} UID: {trayIcon.UID} Version: {trayIcon.Version}");
if ((NIM)message == NIM.NIM_MODIFY)
{
// return an error to the notifyicon as we received a modify for an icon we did not yet have
return(false);
}
}
else
{
if ((NIF.INFO & nicData.uFlags) != 0)
{
handleBalloonData(nicData, trayIcon);
}
if (titleChanged && trayIcon.GUID == default && !trayIcon.IsPinned)
{
// set properties used for pinning
trayIcon.SetPinValues();
}
ShellLogger.Debug($"NotificationArea: Modified: {trayIcon.Title}");
}
}
catch (Exception ex)
{
ShellLogger.Error("NotificationArea: Unable to modify the icon in the collection.", ex);
}
}
else if ((NIM)message == NIM.NIM_DELETE)
{
try
{
foreach (var icon in TrayIcons)
{
if (icon.Equals(trayIcon))
{
TrayIcons.Remove(trayIcon);
ShellLogger.Debug($"NotificationArea: Removed: {icon.Title}");
return(true);
}
}
return(false);
}
catch (Exception ex)
{
ShellLogger.Error("NotificationArea: Unable to remove the icon from the collection.", ex);
}
}
else if ((NIM)message == NIM.NIM_SETVERSION)
{
if (nicData.uVersion > 4)
{
return(false);
}
foreach (NotifyIcon ti in TrayIcons)
{
if (ti.Equals(nicData))
{
ti.Version = nicData.uVersion;
ShellLogger.Debug($"NotificationArea: Modified version to {ti.Version} on: {ti.Title}");
break;
}
}
}
}
return(true);
}