[program-l] Telling a C# implementation of SayTools to in fact UseSAPI
- From: "Jacob Kruger" <jacobk@xxxxxxxxxxxx>
- To: "Program-l" <program-l@xxxxxxxxxxxxx>
- Date: Tue, 3 Mar 2009 15:36:11 +0200
Hi there
While now again looking into WPF etc., I have put together a small class to
render a better description caption for various objects etc. from within the
WPF applications, and it makes use of what they call event bubbling so that
I just added an event handler for GotFocus to the window class, and in that
event code I send e.OriginalSource to the other class that I then included
in the application, and this gets specifically sent to a method called
SayObject, wherein I'm in fact doing a switch based on the
Object.GetType.ToString() function to see what type of object it is, and
then getting Jaws etc. to say extra info relating to it's content etc. etc.
The primary idea is that while I wouldn't want to get it to necessarily
speak extra unless the user was actually running a screenreader, I was just
wondering about in fact telling it to use SAPI as a backup in any case.
Basically, the small bit of code from within Jamal's example code for making
it say something looks like the following:
Type t = Type.GetTypeFromProgID("Say.Tools");
object oST = Activator.CreateInstance(t);
string sText = "Hello world";
object[] aParams = {sText};
t.InvokeMember("Say", BindingFlags.InvokeMethod, null, oST, aParams);
I tried adding in the following 2 lines of code above the actual
invokeMember above to tell it to in fact use SAPI as a backup, but it just
generates errors relating to invalid execution or something (not at that
machine right now):
object[] aParams1 = {1};
t.InvokeMember("UseSAPIAsBackup", BindingFlags.InvokeMethod, null, oST,
aParams1);
Maybe I'm just not used enough to C# syntax, or something, but I have
checked the cases of the methods/functions/variable names as much as I can,
so not sure why it doesn't want to do this.
Since I'm also sort of busy migrating to C# from VB.Net, it would also be
best for me to figure this one out now already though.
TIA
Jacob Kruger
Blind Biker
Skype: BlindZA
'...fate had broken his body, but not his spirit...'
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