IOSource
Description:
Creates a SignalSource that's dispatched when condition is met
for the given channel.
For example, if condition is g_io_in, the source will be dispatched when there's data available for reading.
The callback function invoked by the SignalSource should be added with set_callback, but it has type IOFunc (not SourceFunc).
add_watch is a simpler interface to this same functionality, for the case where you want to add the source to the default main loop context at the default priority.
On Windows, polling a SignalSource created to watch a channel for a socket puts the socket in non-blocking mode. This is a side-effect of the implementation and unavoidable.
Parameters:
| channel |
a IOChannel to watch |
| condition |
conditions to watch for |
Returns:
|
a new SignalSource |