对myclass :: myfunction错误的未定义引用 [英] Undefined reference to myclass::myfunction error

问题描述

我开始学习QT了。做小学习的任务。我收到错误未明确引用mymainwindow :: mytestfunctiontocall

这里是我的代码我是怎么做的



in mywindwindow.h < br $>

I am starting to leran QT. doing small tasks for learning. I am getting error "Undefined reference to mymainwindow::mytestfunctiontocall"
here is my code how i am doing

in mymainwindow.h

public
     void mytesfunctioncall();

in mywindwindow.cpp

in mymainwindow.cpp

void myMainwindow::on_Push_Button_clicked()
{
    mytestfunctiontocall()
}
mytestfunctiontocall()
{
   qDebug() << "Hello world msg";
}

推荐答案

Quote：

public

void mytesfunctioncall（）;

public
void mytesfunctioncall();

这是无效的 C ++ 代码。

如果你发布实际代码会更好，以获得适当的帮助。

This is not valid C++ code.
It is better if you post the actual code, in order to get proper help.

大部分代码都是错的，你应该花更多的时间学习C ++在尝试学习Qt之前。

假设您的头文件包含 myMainwindow 的正确类声明，那么.cpp文件应该类似于跟随，并使用标题中声明的相同方法名称：

Most of that code is wrong, you should spend more time studying C++ before trying to learn Qt.
Assuming that your header file contains a proper class declaration for myMainwindow, then the .cpp file should look something like the following, and use the same method name as declared in the header:

void myMainwindow::on_Push_Button_clicked()
{
    mytesfunctioncall();
}
void myMainwindow::mytesfunctioncall()
{
   qDebug() << "Hello world msg";
}

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