///
/// Events: keyboard global hotkeys
///
/// <summary>
/// Global keyboard hotkeys.
/// </summary>
private void OnHotkeyDown(Object sender, KeyboardHookEventArgs e)
{
switch (e.Name)
{
case "Kill Process":
TryKillingCurrentFileProcess();
break;
case "Close Process":
TryClosingCurrentFileProcess();
break;
}
}
///
/// Actual hooker callback
///
/// <summary>
/// Callback that intercepts key presses.
/// </summary>
private IntPtr Callback(Int32 nCode, IntPtr wParam, IntPtr lParam)
{
// assume the hotkey won't match and will be forwarded:
Boolean forward = true;
if (nCode >= 0)
{
Int32 msg = wParam.ToInt32();
// we care about keyup/keydown messages:
if ((msg == WM_KEYUP) || (msg == WM_SYSKEYUP) || (msg == WM_KEYDOWN) || (msg == WM_SYSKEYDOWN))
{
// the virtual key code is the first KBDLLHOOKSTRUCT member:
Int32 vkCode = Marshal.ReadInt32(lParam);
// base key matches?
if (hotkeys.ContainsKey(vkCode))
{
Keys modifiers = PressedModifiers;
// modifiers match?
if (hotkeys[vkCode].Contains(modifiers))
{
Keys key = (Keys)vkCode;
Hotkey hotkey = new Hotkey(key, modifiers);
String name = hotkeysToNames[hotkey];
// override forward with the current hotkey option:
forward = hotkeysForward[hotkey];
KeyboardHookEventArgs e = new KeyboardHookEventArgs(name, key, modifiers);
// call the appropriate event handler using the current dispatcher:
if (msg == WM_KEYUP || msg == WM_SYSKEYUP)
{
if (HotkeyUp != null)
{
dispatcher.BeginInvoke(HotkeyUp, new Object[] { instance, e });
}
}
else
{
if (HotkeyDown != null)
{
dispatcher.BeginInvoke(HotkeyDown, new Object[] { instance, e });
}
}
}
}
}
}
// forward or return a dummy value other than 0:
if (forward)
{
return(CallNextHookEx(hookID, nCode, wParam, lParam));
}
else
{
return(new IntPtr(1));
}
}
///
/// Events: multimedia keys
///
private void OnHotkeyDown(Object sender, KeyboardHookEventArgs e)
{
switch (e.Name)
{
case "Toggle Play":
{
player.TogglePlay();
break;
}
case "Stop":
{
player.Stop();
break;
}
case "Toggle Mute":
{
player.ToggleMute();
break;
}
case "Volume Up":
{
Int32 volume = volumeTrackBar.TrackBar.Value;
Int32 volume_max = volumeTrackBar.TrackBar.Maximum;
Int32 volume_step = volumeTrackBar.TrackBar.SmallChange;
volumeTrackBar.TrackBar.Value = Math.Min(volume + volume_step, volume_max);
break;
}
case "Volume Down":
{
Int32 volume = volumeTrackBar.TrackBar.Value;
Int32 volume_min = volumeTrackBar.TrackBar.Minimum;
Int32 volume_step = volumeTrackBar.TrackBar.SmallChange;
volumeTrackBar.TrackBar.Value = Math.Max(volume - volume_step, volume_min);
break;
}
}
}
///
/// Actual hooker callback
///
/// <summary>
/// Callback that intercepts key presses.
/// </summary>
private IntPtr Callback(Int32 nCode, IntPtr wParam, IntPtr lParam)
{
// assume the hotkey won't match and will be forwarded:
Boolean forward = true;
if (nCode >= 0)
{
Int32 msg = wParam.ToInt32();
// we care about keyup/keydown messages:
if ((msg == WM_KEYUP) || (msg == WM_SYSKEYUP) || (msg == WM_KEYDOWN) || (msg == WM_SYSKEYDOWN))
{
// the virtual key code is the first KBDLLHOOKSTRUCT member:
Int32 vkCode = Marshal.ReadInt32(lParam);
// base key matches?
if (hotkeys.ContainsKey(vkCode))
{
Keys modifiers = PressedModifiers;
// modifiers match?
if (hotkeys[vkCode].Contains(modifiers))
{
Keys key = (Keys) vkCode;
Hotkey hotkey = new Hotkey(key, modifiers);
String name = hotkeysToNames[hotkey];
// override forward with the current hotkey option:
forward = hotkeysForward[hotkey];
KeyboardHookEventArgs e = new KeyboardHookEventArgs(name, key, modifiers);
// call the appropriate event handler using the current dispatcher:
if (msg == WM_KEYUP || msg == WM_SYSKEYUP)
{
if (HotkeyUp != null)
{
dispatcher.BeginInvoke(HotkeyUp, new Object[] { instance, e });
}
}
else
{
if (HotkeyDown != null)
{
dispatcher.BeginInvoke(HotkeyDown, new Object[] { instance, e });
}
}
}
}
}
}
// forward or return a dummy value other than 0:
if (forward)
{
return CallNextHookEx(hookID, nCode, wParam, lParam);
}
else
{
return new IntPtr(1);
}
}
