Adding hotkeys support for some operations

[GoogleCodeExporter]

I like to have the ability to use hotkeys for Show/Hide and adjust Delay 
subtitles when using xy-VSFilter. Currently, for those operations I must access 
them via right-click menu or even go through Settings dialogue, which is 
inconvenience.

I've seen a mention about hotkeys on About tab, but I don't know what they are 
and cannot find any documents about them.

Original issue reported on code.google.com by l4n9.th...@gmail.com on 27 Nov 2011 at 10:36

[GoogleCodeExporter]

The hotkeys implemented are VK_F13-VK_F16, which cycle and switch subs tracks 
but how an ordinary user is supposed to use those?

Anyway, absence of adjustment hotkeys is causing an unspeakable amount of PITA 
when using external subtitles from web for watching foreign movies. Actually in 
such cases one is forced to switch to player's internal subs renderer.

Original comment by wOxxOm on 28 Sep 2012 at 6:11

[GoogleCodeExporter]

> The hotkeys implemented are VK_F13-VK_F16, which cycle and switch subs tracks
> but how an ordinary user is supposed to use those?

They're not. I assume they were originally added to VSFilter so Video player 
developers could add them as hotkeys.

In MPC-HC, the 's' key defaults to cycling subtitle tracks.
In ZoomPlayer, 'CTRL B' cycles through subtitle tracks, and 'SHIFT B' disables 
subtitles.

Original comment by cyber.sp...@gmail.com on 28 Sep 2012 at 7:07

[GoogleCodeExporter]

The hotkey function would be a very useful feature. On the other hand, in order 
to match he functionality of subtitle display integrated with video players 
both hotkeys and OSD functions are necesary.

If it would be possible to create some sort of hotkey interface, for video 
players to be able to adjust the subtitle timing and selection on the fly, we 
would get a perfect solution. As players would provide OSD in such a case.

Also it would be a significant boost in a direction for xy-vsfilter to be 
included as video players preferred or integrated subtitle filter.

Original comment by sforfors...@gmail.com on 24 Jan 2013 at 10:58

[GoogleCodeExporter]

Original comment by cyber.sp...@gmail.com on 5 Mar 2013 at 11:05

• Added labels: Priority-Low, Type-Enhancement
• Removed labels: Priority-Medium, Type-Defect

[GoogleCodeExporter]

I tried to access the vsfilter subtitle hotkeys using VK_F13-VK_F16 by using a 
hotkey mapping program (AutoHotkey).  I changed the keyboard keys 3 to 6 to 
send out F13 - F16 keystrokes.  While watching several different video files in 
Media Center (x64) I was unable to get the subtitles to cycle/change.

Are the keysrokes being intercepted by Media Center and ignored or are they 
bubbled up to VSFilter.  Either way how can I use a hotkey program like 
AutoHotkey to send the required keystroke/command to VSFilter to cycle the 
hotkeys?  I will write a program if necessary, but I would need to know how to 
get the interface and which commands to send.  Is there any API information 
available?

Thanks for your help.

Original comment by deepCSys...@gmail.com on 11 Sep 2013 at 7:54