public Program()
{
int resolution = GetTimerResolution();
int lastTimerResolution = resolution;
nfIcon.ContextMenuStrip = CreateContextMenu();
nfIcon.Icon = GetIcon(resolution);
nfIcon.Visible = true;
/* Invoke a 'click' on the first item of the context menu */
(nfIcon.ContextMenuStrip.Items[0] as ToolStripMenuItem).PerformClick();
/* Timer tick: update nfIcon */
timer.Tick += delegate
{
try
{
resolution = GetTimerResolution();
/* Update icon on timer change */
if (resolution != lastTimerResolution)
{
/* Destroy the previous Icon Handle to avoid a Handle leak */
WinApiCalls.DestroyIcon(nfIcon.Icon.Handle);
/* Update icon */
nfIcon.Icon = GetIcon(resolution);
/* Save last timer */
lastTimerResolution = resolution;
}
}
catch (Exception e)
{
nfIcon.ShowBalloonTip(5000, "Error", e.ToString(), ToolTipIcon.Error);
};
};
}
private int GetTimerResolution()
{
/* Query the timer resolution from Windows API */
TimerCaps caps = WinApiCalls.QueryTimerResolution();
return((int)(caps.PeriodCurrent / 10000.0));
}