blocks|key|2104778|text|对“`WinMain”的未定义引用|type|blockquote|depth|inlineStyleRanges|entityRanges|data|2104779|它试图找到WinMain，但失败了。因此，您需要使用WinMain而不是wWinMain。|unstyled|offset|length|style|CODE|2104780|另一个可能的问题是|2104781|错误:C函数‘HINSTANCE+(HINSTANCE，HINSTANCE，PWSTR，int)’int+WINAPI+WinMain(HINSTANCE+HINSTANCE，HINSTANCE，PWSTR+pCmdLine，int+nCmdShow)+%5E~+In文件的声明冲突，其中包括c:\mingw\include\windows.h:44:0、from+test.cpp:5:+c:\mingw\include\winbase.h:1263:14:注意:以前的声明'int+WinMain(HINSTANCE、HINSTANCE、LPSTR、int)‘int+(HINSTANCE、HINSTANCE、LPSTR、int)；|2104782|因此，您需要使用LPSTR而不是PWSTR。|2104783|那么入口点会是这样的：|2104784|int+WINAPI+WinMain(HINSTANCE+hInstance,+HINSTANCE,+LPSTR+pCmdLine,+int+nCmdShow)|2104785|以上是ANSI版本入口点。|2104786|entityMap^0|0|5|7|Q|7|10|8|0|0|0|8|5|G|5|0|0|0|28|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@$E|Y|F|Z|G|H]|$E|10|F|11|G|H]|$E|12|F|13|G|H]]|9|@]|A|$]]|$1|I|3|J|5|D|7|14|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|15|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|16|8|@$E|17|F|18|G|H]|$E|19|F|1A|G|H]]|9|@]|A|$]]|$1|O|3|P|5|D|7|1B|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|1C|8|@$E|1D|F|1E|G|H]]|9|@]|A|$]]|$1|S|3|T|5|D|7|1F|8|@]|9|@]|A|$]]|$1|U|3|-4|5|D|7|1G|8|@]|9|@]|A|$]]]|V|$]]

<blockquote>
 undefined reference to `WinMain'
</blockquote>

It tries to find <code>WinMain</code> and failed. So you need use <code>WinMain</code> instead of <code>wWinMain</code>.

Another possible issue is 

<blockquote>
 error: conflicting declaration of C function 'int WinMain(HINSTANCE,
 HINSTANCE, PWSTR, int)' int WINAPI WinMain(HINSTANCE hInstance,
 HINSTANCE, PWSTR pCmdLine, int nCmdShow)
 ^~~~~~~ In file included from c:\mingw\include\windows.h:44:0,
 from test.cpp:5: c:\mingw\include\winbase.h:1263:14: note: previous declaration 'int WinMain(HINSTANCE, HINSTANCE, LPSTR,
 int)' int APIENTRY WinMain (HINSTANCE, HINSTANCE, LPSTR, int);
</blockquote>

So you need use <code>LPSTR</code> instead of <code>PWSTR</code>.

Then the entry point will like this:

<code>int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, LPSTR pCmdLine, int nCmdShow)</code>

Above is ANSI version entry point.

blocks|key|85208|text|此示例代码使用wWinMain，但|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|85209|需要注意的是，VisualC%2B%2B支持“wWinMain”入口点，其中“lpCmdLine”参数是“LPWSTR”。通常，您将使用“_tWinMain”预处理器定义作为入口点，并声明“LPTSTR+lpCmdLine”，以便您可以轻松地支持ANSI和Unicode构建。但是，MinGW+CRT启动库不支持wWinMain，因此如果需要访问命令行参数，则必须坚持使用标准的“WinMain”并使用“GetCommandLine()”。|blockquote|85210|通过用Win32构建MinGW图形用户界面应用程序|85211|在这种情况下，您可以使用WinMain代替。此程序不使用pCmdLine值，因此当您将wWinMain更改为WinMain，将PWSTR+pCmdLine更改为PSTR+pCmdLine时，应该对其进行编译。|85212|如果以后需要unicode命令行，请使用LPWSTR+cmd_line+=+GetCommandLineW();而不是WinMain参数。|85213|较新的明威版本还支持-municode链接器选项，切换到备用启动代码，允许使用wWinMain而不是WinMain+(或wmain而不是main)。将其添加到IDE或makefile中的命令行、链接器选项中。|85214|g%2B%2B+other_options_and_arguments+-municode|code-block|syntax|javascript|85215|entityMap|0|LINK|mutability|MUTABLE|url|https://www.transmissionzero.co.uk/computing/win32-apps-with-mingw/^0|7|8|0|0|2|N|0|0|C|7|S|8|17|8|1I|7|1R|E|28|D|0|K|10|1N|7|0|A|9|13|8|1E|7|1O|5|1W|4|0|0^^$0|@$1|2|3|4|5|6|7|13|8|@$9|14|A|15|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|16|8|@]|D|@]|E|$]]|$1|I|3|J|5|6|7|17|8|@]|D|@$9|18|A|19|1|1A]]|E|$]]|$1|K|3|L|5|6|7|1B|8|@$9|1C|A|1D|B|C]|$9|1E|A|1F|B|C]|$9|1G|A|1H|B|C]|$9|1I|A|1J|B|C]|$9|1K|A|1L|B|C]|$9|1M|A|1N|B|C]]|D|@]|E|$]]|$1|M|3|N|5|6|7|1O|8|@$9|1P|A|1Q|B|C]|$9|1R|A|1S|B|C]]|D|@]|E|$]]|$1|O|3|P|5|6|7|1T|8|@$9|1U|A|1V|B|C]|$9|1W|A|1X|B|C]|$9|1Y|A|1Z|B|C]|$9|20|A|21|B|C]|$9|22|A|23|B|C]]|D|@]|E|$]]|$1|Q|3|R|5|S|7|24|8|@]|D|@]|E|$T|U]]|$1|V|3|-4|5|6|7|25|8|@]|D|@]|E|$]]]|W|$X|$5|Y|Z|10|E|$11|12]]]]

This example code uses <code>wWinMain</code> but
<blockquote>
One thing to note is that Visual C++ supports a “wWinMain” entry point
where the “lpCmdLine” parameter is a “LPWSTR”. You would typically use
the “_tWinMain” preprocessor definition for your entry point and
declare “LPTSTR lpCmdLine” so that you can easily support both ANSI
and Unicode builds. However, the MinGW CRT startup library does not
support wWinMain, so you’ll have to stick with the standard “WinMain”
and use “GetCommandLine()” if you need to access command line
arguments.
</blockquote>
via <a href="https://www.transmissionzero.co.uk/computing/win32-apps-with-mingw/" rel="noreferrer">Building Win32 GUI Applications with MinGW</a>
In this specific case, you can use <code>WinMain</code> instead. This program doesn't use <code>pCmdLine</code> value, so it should compile when you change <code>wWinMain</code> to <code>WinMain</code> and <code>PWSTR pCmdLine</code> to <code>PSTR pCmdLine</code>.
If you later would need unicode command line use <code>LPWSTR cmd_line = GetCommandLineW();</code> instead of <code>WinMain</code> argument.
Newer Mingw versions also support <code>-municode</code> linker option switching to alternate startup code allowing to use <code>wWinMain</code> instead of <code>WinMain</code> (or <code>wmain</code> instead of <code>main</code>). Add it to your command line, linker options in IDE or makefile.
<pre><code>g++ other_options_and_arguments -municode
</code></pre>

blocks|key|85229|text|解决方案是将-municode添加到编译参数中，正如@ssbssa在注释中提到的那样。(与此同时，已接受的答复已经更新，并证实了这一点)。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|85230|示例：|85231|g%2B%2B+helloworld3.cpp+-o+helloworld3+-Wl,-subsystem,windows+-municode|code-block|syntax|javascript|85232|请参阅https://sourceforge.net/p/mingw-w64/wiki2/Unicode%2520apps/|85233|虽然不必定义_UNICODE或UNICODE来编译上述代码，但是链接需要-municode，因为它使用wmain()而不是传统的main()。|blockquote|85234|entityMap|0|LINK|mutability|MUTABLE|url|https://sourceforge.net/p/mingw-w64/wiki2/Unicode%2520apps/^0|6|9|0|0|0|3|1L|0|0|0^^$0|@$1|2|3|4|5|6|7|Z|8|@$9|10|A|11|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|12|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|13|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|14|8|@]|D|@$9|15|A|16|1|17]]|E|$]]|$1|O|3|P|5|Q|7|18|8|@]|D|@]|E|$]]|$1|R|3|-4|5|6|7|19|8|@]|D|@]|E|$]]]|S|$T|$5|U|V|W|E|$X|Y]]]]

The solution is to add <code>-municode</code> to the compilation parameters, as mentioned by @ssbssa in a comment. (In the meantime, the accepted answer has been updated, and confirms this).
Example:
<pre><code>g++ helloworld3.cpp -o helloworld3 -Wl,-subsystem,windows -municode
</code></pre>
See <a href="https://sourceforge.net/p/mingw-w64/wiki2/Unicode%20apps/" rel="noreferrer">https://sourceforge.net/p/mingw-w64/wiki2/Unicode%20apps/</a>
<blockquote>
While it is not necessary to define _UNICODE or UNICODE to compile the above code, -municode is needed for linking because it uses wmain() instead of the traditional main().
</blockquote>

blocks|key|2104916|text|我在Windows+10+(64位)中使用mingw-w64。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2104917|如果您使用这个win32+示例|offset|length|2104918|变化|2104919|int+WINAPI+wWinMain(HINSTANCE+hInstance,+HINSTANCE,+PWSTR+pCmdLine,+int+nCmdShow);|code-block|syntax|javascript|2104920|至|2104921|int+WINAPI+WinMain(HINSTANCE+hInstance,+HINSTANCE+hPrevInstance,+LPSTR+pCmdLine,+int+nCmdShow)|2104922|然后用|2104923|gcc+-O2+-Iinclude+-std=c99+-D+UNICODE+-D+_win32_IE=0x0500+-D+WINVER=0x0500+hw.c+-s++-Wl,--subsystem,windows+-municode++-lcomctl32+-D+WIN_32_LEAN_AND_MEAN+-c+|2104924|并将其与以下方面联系起来：|2104925|gcc+hw.o|2104926|entityMap|0|LINK|mutability|MUTABLE|url|https://learn.microsoft.com/en-us/windows/win32/learnwin32/your-first-windows-program^0|0|D|2|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|16|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|17|8|@]|9|@$D|18|E|19|1|1A]]|A|$]]|$1|F|3|G|5|6|7|1B|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|1C|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|1D|8|@]|9|@]|A|$]]|$1|O|3|P|5|J|7|1E|8|@]|9|@]|A|$K|L]]|$1|Q|3|R|5|6|7|1F|8|@]|9|@]|A|$]]|$1|S|3|T|5|J|7|1G|8|@]|9|@]|A|$K|L]]|$1|U|3|V|5|6|7|1H|8|@]|9|@]|A|$]]|$1|W|3|X|5|J|7|1I|8|@]|9|@]|A|$K|L]]|$1|Y|3|-4|5|6|7|1J|8|@]|9|@]|A|$]]]|Z|$10|$5|11|12|13|A|$14|15]]]]

I use mingw-w64 for Windows 10 (64 bit).
If you use this win32 <a href="https://learn.microsoft.com/en-us/windows/win32/learnwin32/your-first-windows-program" rel="nofollow noreferrer">example</a>:
Change
<pre class="lang-cpp prettyprint-override"><code>int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE, PWSTR pCmdLine, int nCmdShow);
</code></pre>
to
<pre class="lang-cpp prettyprint-override"><code>int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR pCmdLine, int nCmdShow)
</code></pre>
then compile it with
<pre><code>gcc -O2 -Iinclude -std=c99 -D UNICODE -D _win32_IE=0x0500 -D WINVER=0x0500 hw.c -s -Wl,--subsystem,windows -municode -lcomctl32 -D WIN_32_LEAN_AND_MEAN -c 
</code></pre>
and link it with:
<pre><code>gcc hw.o
</code></pre>

blocks|key|1471616|text|我正在使用vscode，对我的问题的回答是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1471617|开式设置|ordered-list-item|1471618|搜索保存|1471619|在运行前启用保存文件|1471620|终端将正常工作|1471621|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$]]|$1|E|3|F|5|D|7|O|8|@]|9|@]|A|$]]|$1|G|3|H|5|D|7|P|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|Q|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|L|$]]

I was using vscode and answer to my problem was :
<ol>
<li>open setting</li>
<li>search save</li>
<li>enable save file before run</li>
</ol>
terminal will work properly

Currently, I am trying to make a Windows application using C++. For compiling my program I use MinGW (GCC). But as soon as I use <code>int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE, PWSTR pCmdLine, int nCmdShow)</code> instead of <code>int main()</code> the compiler shows me the following message:
<pre class="lang-none prettyprint-override"><code>C:/mingw-w64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib/../lib/libmingw32.a(lib64_libmingw32_a-crt0_c.o):crt0_c.c:(.text.startup+0x2e): undefined reference to `WinMain'
 collect2.exe: error: ld returned 1 exit status
The terminal process terminated with exit code: 1
</code></pre>
The example code I tried to compile I got from this Windows application tutorial:
<a href="https://learn.microsoft.com/en-us/windows/win32/learnwin32/your-first-windows-program" rel="nofollow noreferrer">Example Code</a>
I have already tried reinstalling MinGW but it did not help (also I'm using Windows 10).

Undefined reference to WinMain (C++ MinGW)

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋 

腾讯云代码助手

CODING DevOps

Cloud Studio

SDK中心

API中心

命令行工具

目前，我正在尝试使用C++制作一个Windows应用程序。为了编写我的程序，我使用了MinGW (GCC)。但是，一旦我使用int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE, PWSTR pCmdLine, int nCmdShow)而不是int main()，编译器...

问对WinMain (C++ MinGW)的未定义引用
EN

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问对WinMain (C++ MinGW)的未定义引用EN