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达尔文*- *s-MacBook-Pro.local 11.4.2 达尔文内核版本 11.4.2:2012 年 8 月 23 日星期四 16:25:48 PDT;根:xnu-1699.32.7~1/RELEASE_X86_64 x86_64

红宝石

ruby 2.0.0p0(2013-02-24 修订版 39474)[x86_64-darwin11.4.2](由 rvm 安装)

qt

qt:稳定 4.8.4(瓶装),HEAD

代码

require 'Qt'

class Foo < Qt::Object

    signals :my_signal #also tried 'my_signal()'
    slots 'my_slot()'

    def initialize(parent = nil)
        super(parent)

        puts "connecting signal and slot"
        Qt::Object.connect(self, SIGNAL('my_signal()'), self, SLOT('my_slot()'))
        # also tried => connect(self, SIGNAL('my_signal()'), self, SLOT('my_slot()'))

    end

    def emit_my_signal
        puts "sending signal"
        emit my_signal
    end

    def my_slot
        puts "received message from signal"
    end
end


o = Foo.new
o.emit_my_signal

输出

connecting signal and slot
sending signal

输出 Qt.debug_level = Qt::DebugLevel::High

Munged method names:
        QObject$
        QObject?
        QObject#
candidate list:
    QObject* QObject::QObject(QObject*)  (smoke: 0 index: 3804)
matching => smoke: 0 index: 3804
        QObject* (u) score: 2
        match => smoke: 0 index: 3804 score: 2 chosen: 3804
setCurrentMethod(smokeList index: 0, meth index: 3804)
connecting signal and slot
Searching for QObject#connect
Munged method names:
        connect#$#$
candidate list:
    static bool QObject::connect(const QObject*, const char*, const QObject*, const char*)  (smoke: 0 index: 3850)
matching => smoke: 0 index: 3850
        const QObject* (QObject) score: 3
        const char* (s) score: 1
        const QObject* (QObject) score: 3
        const char* (s) score: 1
        match => smoke: 0 index: 3850 score: 8 chosen: 3850
setCurrentMethod(smokeList index: 0, meth index: 3850)
sending signal

似乎发射没有做任何事情。我也试过重新安装qt和qtbindings,但问题依然存在。我还在同一台机器上尝试了带有信号和插槽的 PyQt,它就像一个魅力。

有人对此有任何想法吗?是 ruby​​ qtbindings 的错误还是我做错了什么?

4

2 回答 2

1

通常,需要在可靠地传递任何信号之前启动 Qt 的事件循环。我在你的代码中没有看到。更具体地说,我缺少的是:

app = Qt::Application.new(ARGV)
app.exec
于 2016-01-19T19:32:35.077 回答
0

代码似乎是正确的。该问题仅在 ruby​​ 和 qtbindings 版本的特定组合中出现,这些版本现已过时。

于 2016-01-11T09:09:08.447 回答