'Button_Click'：不是'ButtonTest :: MainPage'的成员 [英] 'Button_Click' : is not a member of 'ButtonTest::MainPage'

问题描述

我是C ++和Windows商店编程的新手，我坚持在按钮上定义点击处理程序。我指的是这些说明：

I'm new to C++ and Windows Store programming, and I'm stuck defining click handlers on buttons. I'm referring to these instructions:

1. 将Button控件添加到父容器。


2. 要为按钮分配名称，请将x：Name属性设置为字符串值。要在代码中引用控件，它必须有一个名称。


3. 要为按钮分配标签，请将Content属性设置为字符串值。


4. >要在用户单击按钮时执行操作，请为Click事件添加处理程序。在Click事件处理程序中，添加执行
   操作的代码。

1. Add a Button control to a parent container.
2. To assign a name to the button, set the x:Name attribute to a string value. To refer to a control in code, it must have a name. Otherwise, a name is not required.
3. To assign a label to the button, set the Content property to a string value.
4. To perform an action when a user clicks the button, add a handler for the Click event. In the Click event handler, add code to perform some action.

< Button x ：Name =button1Content =Button
Click =Button_Click/>

void MainPage :: Button_Click（Object ^ sender，RoutedEventArgs ^ e）{

//添加代码以在此处执行某些操作。

} p>

void MainPage::Button_Click(Object^ sender, RoutedEventArgs^ e) {
// Add code to perform some action here.
}

• 我已添加了< Button x：Name =button1 = 中的块中<= c $ c =>ButtonClick =Button_Click/> $ c>。


• 我添加了 void MainPage :: Button_Click（Object ^ sender，RoutedEventArgs ^ e）{...} MainPage.xaml.cpp 。


• I've added the <Button x:Name="button1" Content="Button" Click="Button_Click" /> inside the Grid block in MainPage.xaml.
• I've added void MainPage::Button_Click(Object^ sender, RoutedEventArgs^ e) {...} in MainPage.xaml.cpp.

我不能解决：




错误C2039：'Button_Click'：不是'ButtonTest :: MainPage'的成员

error C2039: 'Button_Click' : is not a member of 'ButtonTest::MainPage'

和




IntelliSense：classButtonTest :: MainPage没有成员Button_Click

IntelliSense: class "ButtonTest::MainPage" has no member "Button_Click"

我如何解决这个问题？

推荐答案

您将需要在 MainPage.xaml.h中定义 MainPage :: Button_Click 的原型文件作为类的成员。喜欢

You will need to define the prototype of MainPage::Button_Click in the MainPage.xaml.h file as a member of the class. Like

public:

    Button_Click(object^, RoutedEventArgs^);

C ++每个方法都需要一个原型。

C++ needs a prototype for every method.

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