Hello,
I'm doing a small project that needs to use threads.h and I have it mostly
working. Having never written threaded programs, I have a question about
Fl_Button and fl_create_thread.
I'd like a thread to be created when the user clicks a button. So, would I put
fl_create_thread in the callback function like so:
void * mycallback(void * userdata)
{
// Make a big file.
?? fl_create_thread();
}
Right now, I have that in main like so (just for testing):
Fl_Button *gen = new FL_Button(0,0,0,0, "&Generate");
Fl::Lock();
Fl_Thread make_file;
fl_create_thread(make_file, mycallback, gen);
Fl::run();
So the button is there, but it doesn't do anything in my test code. The program
starts the thread when it first executes as I expect it would. The thread seems
to be working as it makes the big file and the GUI is still responsive and
functioning to other buttons, I can close it, etc.
Any advice on how to make the button start the thread would be appreciated.
Tom
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