[Mono-list] Problems with delegates (Qt#)

[Dietmar Maurer]

I tried to install qt#, but if i run:

> mono hello.exe

i get various warnings:

** (hello.exe:29609): WARNING **: Failed to load library libqtsharp (libqtsharp): /usr/local/lib/libqtsharp.so: undefined symbol: _ZNSt8ios_base4InitC1Ev

** (hello.exe:29609): WARNING **: Failed to load library libqtsharp (libqtsharp): /usr/local/lib/libqtsharp.so: undefined symbol: _ZNSt8ios_base4InitC1Ev

** (hello.exe:29609): WARNING **: Failed to load function qt_new_QApplication3 from libqtc

** (hello.exe:29609): WARNING **: Failed to load function qt_new_QApplication3 from libqtc

any ideas whats wrong?

- Dietmar


On Tue, 2002-12-31 at 00:56, Marcus wrote:
> Qt# is having major problems involving delegates. Essentially, we are
> creating 
> delegates for C# instances/methods (since a delegate for an instance 
> encapsulates both the instance and the method), and we are passing the
> delegate to unmanaged code. The unmanaged code is supposed to invoke
> the 
> delegate at the appropriate time.
> 
> Under Mono, delegates with no parameters (e.g. void quit() ) work, but
> delegates that take an int, for example (e.g. void display(int) ), are
> never 
> called.
> 
> The same problems occurs when using mint or mono, and it does not
> matter 
> whether the code is compiled with mcs or csc. Interestingly, the same
> code 
> does work correctly under Portable.NET.
> 
> I really do not know what to do at this point. I have spent hours and
> hours 
> trying to figure out why this isn't working. It's seems as though the
> runtime 
> is not allowed the unmanaged code to invoke the managed code.
> 
> 
> 
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