[2.x] Event when second monitor is switched on

[Lax]

Hi,

is there a way to detect via graphics card event etc. whether a second monitor/tv is swiched on?
I have the issue, then when I have an Ogre application running and my wife does switch on the tv, which is also connected with the graphics card, my PC monitor will become black for a small amount of time and all my MyGUI widgets are placed in the middle of the monitor screen (positions resetted). This is really annoying.
Is there an event, I could attach, to get notified, that a device is switched, or lost/restored? So I could react on that event and re-place all widgets at that time to the correct position again.

Best Regards
Lax

[dark_sylinc]

I'm not familiar, but I'd suspect when such thing happen, you'd get at least a window event message that the window has been moved and/or resized; hence you should check if monitor count or desktop resolution has changed from a previous known state (e.g. SDL_GetWindowDisplayIndex, SDL_GetNumVideoDisplays).

If you're using SDL, you should look for event type SDL_WINDOWEVENT, events SDL_WINDOWEVENT_SIZE_CHANGED and SDL_WINDOWEVENT_RESIZED, and SDL_WINDOWEVENT_MOVED

If you're not using SDL, use WindowEventUtilities::addWindowEventListener.

See this tutorial.

[Zonder]

See here for Win32 API specific https://stackoverflow.com/questions/598 ... -windows-7

[Lax]

See here for Win32 API specific https://stackoverflow.com/questions/598 ... -windows-7

Thanks, sounds promising! I will check this out.