Can a wxSemaphore be created as a public member of a class? Topic is solved

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softport
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Can a wxSemaphore be created as a public member of a class?

Post by softport » Thu Jan 17, 2013 11:07 pm

Hello, I am getting a compiler error when I try to add a semaphore as a public member of a class.
Is this not allowed? I included the header <wx/thread.h>.

I also tried making it private, but that gives the same compiler errors.

Thanks!

Code: Select all

    public:
        ClassReport_IN();
        virtual ~ClassReport_IN();
        
        void init();
        
        // Semaphores
        //=========================
        wxSemaphore semaphore_ucBuffer(1, 1);  // Line 105
40 C:\Program Files\Dev-Cpp\...ClassReport_IN.h:105 expected identifier before numeric constant
40 C:\Program Files\Dev-Cpp\...ClassReport_IN.h:105 expected ',' or '...' before numeric constant
Windows XP, wxDev-C++ 7.4.2.259, wxWidgets 2.8.12, MingW

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doublemax
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Re: Can a wxSemaphore be created as a public member of a cla

Post by doublemax » Thu Jan 17, 2013 11:33 pm

This has nothing to do with wxSemaphore, it's a general matter of C++ syntax. You can't initialize a member variable that way.

In the header file:

Code: Select all

wxSemaphore semaphore_ucBuffer;  // Line 105
Then, when you define the constructor, you can pass the parameters:

Code: Select all

ClassReport_IN::ClassReport_IN()
               :semaphore_ucBuffer(1, 1)
{
Use the source, Luke!

softport
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Re: Can a wxSemaphore be created as a public member of a cla

Post by softport » Fri Jan 18, 2013 12:13 am

Thanks doublemax, hadn't realized I was running before learning to walk. Have some reading to do.
Thanks for the lesson!
Windows XP, wxDev-C++ 7.4.2.259, wxWidgets 2.8.12, MingW

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