指针向量的迭代器未正确解引用 [英] Iterator for vector of pointers not dereferencing correctly

问题描述

这是我的问题:

我有一个 std::vector 用于跟踪子控件.

I have a std::vector<AguiWidgetBase*> which is used to keep track of child controls.

我有这两个函数来返回迭代器:

I have these two functions to return iterators:

std::vector<AguiWidgetBase*>::const_iterator AguiWidgetBase::getChildBeginIterator() const
{
    return children.begin();
}

std::vector<AguiWidgetBase*>::const_iterator AguiWidgetBase::getChildEndIterator() const
{
    return children.end();
}

然后我像这样使用它:

for(std::vector<AguiWidgetBase*>::const_iterator it = box->getChildBeginIterator(); 
    it != box->getChildEndIterator(); ++it)
{
    it->setText("Hello World");
}

我收到这些错误:

Error   3   error C2039: 'setText' : is not a member of 'std::_Vector_const_iterator<_Ty,_Alloc>'   c:\users\josh\documents\visual studio 2008\projects\agui\alleg_5\main.cpp   112
Error   2   error C2839: invalid return type 'AguiWidgetBase *const *' for overloaded 'operator ->' c:\users\josh\documents\visual studio 2008\projects\agui\alleg_5\main.cpp   112

为什么会出现这些错误?

Why is it giving me these errors?

谢谢

推荐答案

有什么方法可以改变我的迭代器，让它-> 工作吗?

Is there a way I can change my iterators so that it-> works?

不是直接的，但你可以这样做:

Not directly, but you could do something like:

for(std::vector<AguiWidgetBase*>::const_iterator it = box->getChildBeginIterator(); 
    it != box->getChildEndIterator(); ++it)
{
    AguiWidgetBase* p = *it;

    p->setText("Hello World");
}

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