Threading and GUI

[torhu]

I want to call gui functions from other threads than the main one.  What's the recommended way of doing that in wxD?

From reading wxWidgets docs, it seems that either a custom event, or wxCommandEvent, in combination with wxEvtHandler.AddPendingEvent and ProcessEvent is one way to do this.  Does the wxd solution differ much from what the wxWidgets docs say?

Basically I want to duplicate the functionality of DWT's syncExec and asyncExec functions.  I tried this:

void syncExec(Object o, void delegate(Object) dg)
{
    bool isMain = mainThread.isSelf();

    if (isMain) {
        dg(o);
    }
    else synchronized (execMutex) {
        MutexGuiEnter();
        dg(o);
        MutexGuiLeave();
    }
}

asyncExec does the same thing, but doesn't block.  I haven't thought this through yet, but I suppose mixing phobos threads with wxThreads isn't such a great idea?

[torhu]

I'm trying to create a custom event now, but I get 'no match for implicit super() call in constructor'.  wxD's Event class only has one constructor, which looks like this: 'this(IntPtr wxobj)'.  What argument should I give it?

[Mike Wey]

Normally the pointer to the associated C++ object gets passed to it. I guess when deriving from it you would pass the pointer to the base c++ object. I don't know how to get one for the wxEvent.

[torhu]

I had a look at Event's source code, and it doesn't seem that custom events are supported yet.  I guess it's a bit too early to try to use wxD for multithreaded apps yet.  I'll have to try out yet another GUI library. :(