VC++，与 wxWidgets 的链接错误，x64

VC++, linking error with wxWidgets, x64

本文关键字：错误 x64 链接 wxWidgets VC++      更新时间：2023-10-16

我正在使用wxWidgets 2.8在Windows 7 x64上编译VC++ 10应用程序。这就是我遇到的错误。代码是使用 wxFormBuilder 生成的。

更新：我也尝试在 32 位机器上运行它，但仍然遇到同样的问题。

我不知道我错过了哪些

wxwidgets库，或者我做错了哪些设置。已在调试和发布模式下尝试。

如果有人能指出一些提示，我将不胜感激！这个问题已经研究了一段时间。


1>WelcomeDlg.obj : error LNK2001: unresolved external symbol "class wxPoint const wxDefaultPosition" (?wxDefaultPosition@@3VwxPoint@@B)
1>ConsoleDlg.obj : error LNK2001: unresolved external symbol "class wxPoint const wxDefaultPosition" (?wxDefaultPosition@@3VwxPoint@@B)
1>ControlDialog.obj : error LNK2019: unresolved external symbol "class wxPoint const wxDefaultPosition" (?wxDefaultPosition@@3VwxPoint@@B) referenced in function "public: void __cdecl ControlDialog::loadFile(class std::basic_string,class std::allocator >)" (?loadFile@ControlDialog@@QEAAXV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z)
1>WxWidgetsWindow.obj : error LNK2001: unresolved external symbol "class wxPoint const wxDefaultPosition" (?wxDefaultPosition@@3VwxPoint@@B)
1>MainFrame.obj : error LNK2001: unresolved external symbol "class wxPoint const wxDefaultPosition" (?wxDefaultPosition@@3VwxPoint@@B)
1>MainFrame.obj : error LNK2019: unresolved external symbol "public: static unsigned __int64 const wxStringBase::npos" (?npos@wxStringBase@@2_KB) referenced in function "public: __cdecl MainFrame::MainFrame(class wxWindow *,class UIApp *)" (??0MainFrame@@QEAA@PEAVwxWindow@@PEAVUIApp@@@Z)
1>UIApp.obj : error LNK2001: unresolved external symbol "public: static unsigned __int64 const wxStringBase::npos" (?npos@wxStringBase@@2_KB)
1>VISUI.obj : error LNK2001: unresolved external symbol "public: static unsigned __int64 const wxStringBase::npos" (?npos@wxStringBase@@2_KB)
1>WelcomeDlg.obj : error LNK2001: unresolved external symbol "public: static unsigned __int64 const wxStringBase::npos" (?npos@wxStringBase@@2_KB)
1>ConsoleDlg.obj : error LNK2001: unresolved external symbol "public: static unsigned __int64 const wxStringBase::npos" (?npos@wxStringBase@@2_KB)
1>ControlDialog.obj : error LNK2001: unresolved external symbol "public: static unsigned __int64 const wxStringBase::npos" (?npos@wxStringBase@@2_KB)
1>Helper.obj : error LNK2001: unresolved external symbol "public: static unsigned __int64 const wxStringBase::npos" (?npos@wxStringBase@@2_KB)
1>WxWidgetsWindow.obj : error LNK2001: unresolved external symbol "public: static unsigned __int64 const wxStringBase::npos" (?npos@wxStringBase@@2_KB)
1>MainFrame.obj : error LNK2001: unresolved external symbol "char const * const wxEmptyString" (?wxEmptyString@@3PEBDEB)
1>UIApp.obj : error LNK2001: unresolved external symbol "char const * const wxEmptyString" (?wxEmptyString@@3PEBDEB)
1>VISUI.obj : error LNK2001: unresolved external symbol "char const * const wxEmptyString" (?wxEmptyString@@3PEBDEB)
1>WelcomeDlg.obj : error LNK2001: unresolved external symbol "char const * const wxEmptyString" (?wxEmptyString@@3PEBDEB)
1>ConsoleDlg.obj : error LNK2001: unresolved external symbol "char const * const wxEmptyString" (?wxEmptyString@@3PEBDEB)
1>ControlDialog.obj : error LNK2001: unresolved external symbol "char const * const wxEmptyString" (?wxEmptyString@@3PEBDEB)
1>Helper.obj : error LNK2001: unresolved external symbol "char const * const wxEmptyString" (?wxEmptyString@@3PEBDEB)
1>WxWidgetsWindow.obj : error LNK2001: unresolved external symbol "char const * const wxEmptyString" (?wxEmptyString@@3PEBDEB)
1>ControlDialog.obj : error LNK2001: unresolved external symbol "class wxMBConvUTF8 & wxConvUTF8" (?wxConvUTF8@@3AEAVwxMBConvUTF8@@EA)
1>Helper.obj : error LNK2001: unresolved external symbol "class wxMBConvUTF8 & wxConvUTF8" (?wxConvUTF8@@3AEAVwxMBConvUTF8@@EA)
1>WxWidgetsWindow.obj : error LNK2001: unresolved external symbol "protected: static struct wxEventTable const wxGLCanvas::sm_eventTable" (?sm_eventTable@wxGLCanvas@@1UwxEventTable@@B)
1>WxWidgetsWindow.obj : error LNK2001: unresolved external symbol "char const * const wxFrameNameStr" (?wxFrameNameStr@@3QBDB)
1>VISUI.obj : error LNK2001: unresolved external symbol "char const * const wxFrameNameStr" (?wxFrameNameStr@@3QBDB)
1>WxWidgetsWindow.obj : error LNK2001: unresolved external symbol "class wxPalette wxNullPalette" (?wxNullPalette@@3VwxPalette@@A)
1>WxWidgetsWindow.obj : error LNK2001: unresolved external symbol "class wxCursor wxNullCursor" (?wxNullCursor@@3VwxCursor@@A)
1>WxWidgetsWindow.obj : error LNK2001: unresolved external symbol "int const wxEVT_NULL" (?wxEVT_NULL@@3HB)
1>WxWidgetsWindow.obj : error LNK2001: unresolved external symbol "int const wxEVT_ERASE_BACKGROUND" (?wxEVT_ERASE_BACKGROUND@@3HB)
1>WxWidgetsWindow.obj : error LNK2001: unresolved external symbol "int const wxEVT_PAINT" (?wxEVT_PAINT@@3HB)
1>WxWidgetsWindow.obj : error LNK2001: unresolved external symbol "int const wxEVT_SIZE" (?wxEVT_SIZE@@3HB)
1>WxWidgetsWindow.obj : error LNK2001: unresolved external symbol "int const wxEVT_IDLE" (?wxEVT_IDLE@@3HB)

The libraries I'm linking against (64-bit wxwidgets libraries)

wxbase28.lib wxmsw28_core.lib wxmsw28_richtext.lib wxmsw28_html.lib wxmsw28_gl.lib wxmsw28_adv.lib comctl32.lib Rpcrt4.lib

My compiling settings:

  • Treat Wchat_t as built in type: Yes
  • Multi-threaded Debug DLL

I found the solution to my own problem. Just post here in case anyone faces it.

It's not about x64 or x32, neither about wxWidgets. I just need to add these 2 lines in header (before #include <wx/wx.h>)

#define __WXMSW__
#define WXUSINGDLL

你是如何构建wxWidgets的？我的理解是，您必须更改与wxWidgets一起分发的Visual Studio项目文件，以便它以64位模式构建。除非您的目标是 32 位模式。因此，请确保您的应用程序和 wxWidget 的目标架构相同（即两者都应该是 32 位或 64 位）。

另外，最后我看了一下，wxWidgets 2.8不支持x64，如果你想以x64为目标，你需要升级到wxWidgets 2.9。

您还可以查看以下链接：http://wiki.wxwidgets.org/Supporting_x64_and_Win32_within_one_solution

1>WelcomeDlg.obj : error LNK2001: unresolved external symbol "class wxPoint const wxDefaultPosition" (?wxDefaultPosition@@3VwxPoint@@B)

这是一个极其奇怪的外部符号。 "类"在那里做什么 - 这是一个C++关键词。 所有的空间都在做什么？

我的猜测是编译过程中发生了一些可怕的事情。 您确定您甚至将源代码提交给了C++编译器吗？

在 MSVC 2019 上遇到了相同的问题，如尝试从站点下载的预编译二进制文件构建时的问题中所述。当我使用"发布"选项（不是"发布 DLL"，而是"发布"）从...buildmswwx_vc12.sln源代码编译并获得"vc_x64_lib"文件夹时，一切正常。就我而言，无需指定#define __WXMSW__和#define WXUSINGDLL，只需检查您使用Multi-threaded DLL (/MD)构建

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