遇到麻烦（Windows编程） [英] Having troubles with classes (Windows programming)
问题描述
我有一个名为Server Class的类。这是ServerClass.h文件：
I have a class called "Server Class". This is the ServerClass.h file:
#define DEFAULT_BUFLEN 512
#ifndef SERVERCLASS_H
#define SERVERCLASS_H
#endif
class ServerClass_h
{
public:
int CreateServer(HWND);
int CloseServer();
char* getcbuffer();
int listensock();
private:
SOCKET ListenSocket = INVALID_SOCKET;
SOCKET ClientSocket = INVALID_SOCKET;
char recvbufx[DEFAULT_BUFLEN];
int recvbuflen;
};
和CPP，有点大，所以我会把它放在一个pastebin：< a href =http://pastebin.com/6wKDWXX4> http://pastebin.com/6wKDWXX4 [ ^ ]
然后，我将ServerClass标头包含在我的主CPP文件中：
And the CPP, that is a little bit large, so I will put it in a pastebin: http://pastebin.com/6wKDWXX4[^]
Then, I include the ServerClass header into my main CPP file:
#include "ServerClass.h"
然后，在右边，我添加以下代码：
And then, in the right line, I add the following code:
if(ServerClass::CreateServer(hwnd) == 0)
SetWindowText(hwnd,"Session created");
但编译器抱怨这，并说：
呃ror：':: CreateServer'尚未声明
它甚至出现在自动完成中，因此它应该存在。我不知道出了什么问题。
我正在使用GNU GCC编译器，并在Windows中进行编程。
But the compiler complains about this, and says:
error: '::CreateServer' has not been declared
It even appears in the autocomplete, so it should exist. I don't know what's wrong.
I'm using the GNU GCC compiler, and programming in Windows.
推荐答案
ServerClass :: CreateServer（hwnd）
ServerClass::CreateServer(hwnd)
从 CreateServer 不是该类的静态成员，你不能这样称呼它。首先创建 ServerClass 的实例，并调用其 CreateServer 方法。
BTW
Since CreateServer is not a static member of the class, you cannot call it that way. You first to create an instance of the ServerClass and the invoke its CreateServer method.
BTW
class ServerClass_h
{
public：
int CreateServer（HWND）;
int CloseServer（ ）;
class ServerClass_h
{
public:
int CreateServer(HWND);
int CloseServer();
类的名称应该是 ServerClass 。
BTW2：
listensock 已定义为 static 但未声明为 static 。
The name of the class should be instead ServerClass.
BTW2:
listensock is defined as static but it is NOT declared as static.
也许它的工作原理如下：
maybe it work like this:
#define DEFAULT_BUFLEN 512
#ifndef SERVERCLASS_H
#define SERVERCLASS_H
#endif
class ServerClass_h
{
public:
static int CreateServer(HWND);
static int CloseServer(HWND);
char* getcbuffer();
int listensock();
private:
SOCKET ListenSocket = INVALID_SOCKET;
SOCKET ClientSocket = INVALID_SOCKET;
char recvbufx[DEFAULT_BUFLEN];
int recvbuflen;
};
那么你就可以这样使用它：
then you can use it like this:
HWND someHwnd;
// ...
if(ServerClass::CreateServer(hwnd) == 0)
SetWindowText(hwnd,"Session created");
// ...
if(ServerClass::CloseServer(hwnd) == 0)
SetWindowText(hwnd,"Session closed");
或你做这样的事情：
or you doing something like this:
class ServerClass
{
public:
static ServerClass* CreateServer(HWND hWnd)
{
try
{
ServerClass serverClass = new ServerClass(hWnd);
return serverClass;
}
catch
{
return NULL;
}
}
BOOL CloseServer(ServerClass* serverClass)
{
try
{
if(serverClass)
{
delete serverClass;
serverClass = NULL;
}
return TRUE;
}
catch
{
return FALSE;
}
}
// ...
private:
ServerClass(HWND);
~ServerClass();
// ...
}
那么你可以像这样使用它：
then you could use it like this:
ServerClass* m_pServerClass = NULL;
// ...
ServerClass* pServerClass = ServerClass::CreateServer(hwnd);
if(pServerClass != NULL)
{
m_pServerClass = pServerClass;
SetWindowText(hwnd,"Session created");
}
// ...
if(ServerClass::CloseServer(m_pServerClass) == TRUE)
SetWindowText(hwnd,"Session closed");
好的，我明白了！
问题是班级的名称。它肯定与某些东西冲突，导致编译器的错误，使我的类与结构混淆。
我将类的名称改为servman ，将函数定义为静态，现在我让它工作很好。我仍然必须在某个地方出现故障，因为它卡在某个地方，但这是另一个故事。我现在可以从另一个类调用CreateServer函数。
Okay, I got it!
The problem was the name of the class. It must have been conflicting with something, and that caused the error of the compiler, confusing my class with a struct.
I changed the name of the class to "servman", defined the functions as static, and now I got it working "fine". I still must have a glitch somewhere since it gets stuck somewhere, but that's another story. I can now call the CreateServer function from another class.
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