需要帮助解决编译器错误：错误：从“int”转换无效；到“GIO条件”

发布于 2024-08-26 10:24:23 字数 910 浏览 3 评论 0原文

我有一个使用 GIO 的简单 cpp 文件。我已经删除了所有内容以显示我的编译错误：

这是我得到的错误：

My.cpp:16: error: invalid conversion from ‘int’ to ‘GIOCondition’
make[2]: *** [My.o] Error 1

这是完整的文件：

#include <glib.h>

static gboolean
read_socket (GIOChannel *gio, GIOCondition condition, gpointer data)
{
  return false;
}


void createGIOChannel() {
  GIOChannel* gioChannel = g_io_channel_unix_new(0);
  // the following is the line causing the error:
  g_io_add_watch(gioChannel, G_IO_IN|G_IO_HUP, read_socket, NULL);
}

我已经看到使用 gio 的其他示例，并且我在调用 G_IO_IN|G_IO_HUP 方面做了同样的事情。以及文档 http://www.gtk.org/api /2.6/glib/glib-IO-Channels.html 说我只需要包含，我做到了。

您能告诉我如何解决我的错误吗？

我能想到的一件事是我在 cpp 文件中执行此操作。但是g_io_add_watch是ac函数吗？

感谢您的帮助。我花了几个小时在这上面，但没有取得任何进展。

原文

I have a simple cpp file which uses GIO. I have stripped out everything to show my compile error:

Here is the error I get:

My.cpp:16: error: invalid conversion from ‘int’ to ‘GIOCondition’
make[2]: *** [My.o] Error 1

Here is the complete file:

#include <glib.h>

static gboolean
read_socket (GIOChannel *gio, GIOCondition condition, gpointer data)
{
  return false;
}


void createGIOChannel() {
  GIOChannel* gioChannel = g_io_channel_unix_new(0);
  // the following is the line causing the error:
  g_io_add_watch(gioChannel, G_IO_IN|G_IO_HUP, read_socket, NULL);
}

I have seen other example using gio, and I am doing the same thing in term of calling G_IO_IN|G_IO_HUP.
And the documentation http://www.gtk.org/api/2.6/glib/glib-IO-Channels.html, said I only need to include , which I did.

Can you please tell me how to resolve my error?

One thing I can think of is I am doing this in a cpp file. But g_io_add_watch is a c function?

Thank you for any help. I have spent hours on this but did not get anywhere.

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久夏青 2024-09-02 10:24:23

您可以投射它

(GIOCondition) G_IO_IN|G_IO_HUP

或

void createGIOChannel() {
  GIOChannel* gioChannel = g_io_channel_unix_new(0);
  // the following is the line causing the error:
  GIOCondition cond = G_IO_IN|G_IO_HUP;
  g_io_add_watch(gioChannel, cond , read_socket, NULL);
}

You can Cast it

(GIOCondition) G_IO_IN|G_IO_HUP

void createGIOChannel() {
  GIOChannel* gioChannel = g_io_channel_unix_new(0);
  // the following is the line causing the error:
  GIOCondition cond = G_IO_IN|G_IO_HUP;
  g_io_add_watch(gioChannel, cond , read_socket, NULL);
}

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