C ++ wxWidgets应用程序未编译

Question

我在编译wxWidgets程序时遇到问题。

#include <wx/wx.h>
#include <wx/url.h>
#include <wx/stream.h>
#include <wx/sstream.h>

int main(int argc, char* argv[])
{
    wxURL url(wxT("http://google.com"));
    if (url.GetError()==wxURL_NOERR)
    {
        wxString htmldata;
        wxInputStream *in = url.GetInputStream();
        if (in && in->IsOk())
        {
            wxStringOutputStream html_stream(&htmldata);
            in->Read(html_stream);
        }
        wxPuts(html_stream.GetString();
    }


}

当我尝试对其进行编译时，出现以下错误：

main.cpp  In function 'int main(int, char**)':
main.cpp 8 error: 'wxURL' was not declared in this scope
main.cpp 8 error: expected ';' before 'url'
main.cpp 9 error: 'url' was not declared in this scope
main.cpp 9 error: 'wxURL_NOERR' was not declared in this scope
main.cpp 12 error: 'wxInputStream' was not declared in this scope
main.cpp 12 error: 'in' was not declared in this scope
main.cpp 15 error: 'wxStringOutputStream' was not declared in this scope
main.cpp 15 error: expected ';' before 'html_stream'
main.cpp 16 error: 'html_stream' was not declared in this scope
main.cpp 18 error: 'html_stream' was not declared in this scope
=== Build finished: 10 errors, 0 warnings ===

我究竟做错了什么？ 即使我希望应用程序是非GUI的控制台，我也应该使用OnInit（）而不是int main（）吗？

Answer 1

查看wxWidgets的setup.h文件，并确保wxURL为#define为

#define wxUSE_URL 1

有关进入安装文件（setup.h）的更多信息，请访问http://wiki.wxwidgets.org/Setup.H。

要查看wxURL的示例，请查看wxWidgets文件夹，转到“示例”，然后查看“ sockets_client”。

也有参考文件，网址为

http://docs.wxwidgets.org/2.9.3/classwx_u_r_i.html

http://wiki.wxwidgets.org/WxURL

http://wiki.wxwidgets.org/Download_a_file_from_internet