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c++ - Qt error : LNK1120: 1 unresolved externals main. obj:-1: error: LNK2019 运行Qmake

转载 作者:太空狗 更新时间:2023-10-29 21:18:27 26 4
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我不明白为什么会出现错误:main.obj:-1: error: LNK2019: unresolved external symbol "public: __thiscall Standbywindow::Standbywindow(void)"(??0Standbywindow@@QAE@XZ) 在函数_main 中引用和debug\pointer_test.exe:-1: 错误: LNK1120: 1 未解析的外部

main.cpp

  #include <QCoreApplication>
#include <QDebug>
#include "standby.h"

Standbywindow *standby_window;

int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
standby_window = new Standbywindow;
return a.exec();
}

待机.h

 #ifndef STANDBY_H
#define STANDBY_H
#include <QDebug>
class Standbywindow{
public:
Standbywindow();
};

#endif // STANDBY_H

待机.cpp

#include "standby.h"
Standbywindow::Standbywindow(){
}

pointer_test.pro

  #-------------------------------------------------
#
# Project created by QtCreator 2015-05-10T11:08:06
#
#-------------------------------------------------

QT += core

QT -= gui

TARGET = pointer_test
CONFIG += console
CONFIG -= app_bundle

TEMPLATE = app


SOURCES += main.cpp \
standby.cpp

HEADERS += \
standby.h

编译输出

09:08:23: Running steps for project pointer_test...
09:08:23: Configuration unchanged, skipping qmake step.
09:08:23: Starting: "C:\Qt\Tools\QtCreator\bin\jom.exe"
C:\Qt\Tools\QtCreator\bin\jom.exe -f Makefile.Debug
cl -c -nologo -Zm200 -Zc:wchar_t -Zi -MDd -GR -W3 -w34100 -w34189 -EHsc /Fddebug\pointer_test.pdb -DUNICODE -DWIN32 -DQT_CORE_LIB -I"..\pointer_test" - I"." -I"C:\Qt\5.4\msvc2010_opengl\include" -I"C:\Qt\5.4\msvc2010_opengl\include\QtCore" -I"debug" -I"C:\Qt\5.4\msvc2010_opengl\mkspecs\win32-msvc2010" -Fodebug\ @C:\Users\Mike\AppData\Local\Temp\main.obj.10328.16.jom
main.cpp
echo 1 /* CREATEPROCESS_MANIFEST_RESOURCE_ID */ 24 /* RT_MANIFEST */ "debug\\pointer_test.exe.embed.manifest">debug\pointer_test.exe_manifest.rc
if not exist debug\pointer_test.exe if exist debug\pointer_test.exe.embed.manifest del debug\pointer_test.exe.embed.manifest
if exist debug\pointer_test.exe.embed.manifest copy /Y debug\pointer_test.exe.embed.manifest debug\pointer_test.exe_manifest.bak
link /NOLOGO /DYNAMICBASE /NXCOMPAT /DEBUG /SUBSYSTEM:CONSOLE "/MANIFESTDEPENDENCY:type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' publicKeyToken='6595b64144ccf1df' language='*' processorArchitecture='*'" /MANIFEST /MANIFESTFILE:debug\pointer_test.exe.embed.manifest /OUT:debug\pointer_test.exe @C:\Users\Mike\AppData\Local\Temp\pointer_test.exe.10328.2250.jom
main.obj : error LNK2019: unresolved external symbol "public: __thiscall Standbywindow::Standbywindow(void)" (??0Standbywindow@@QAE@XZ) referenced in function _main
debug\pointer_test.exe : fatal error LNK1120: 1 unresolved externals
jom: C:\Users\Mike\Documents\QT\build-pointer_test- Desktop_Qt_5_4_1_MSVC2010_OpenGL_32bit-Debug\Makefile.Debug [debug\pointer_test.exe] Error 1120
jom: C:\Users\Mike\Documents\QT\build-pointer_test- Desktop_Qt_5_4_1_MSVC2010_OpenGL_32bit-Debug\Makefile [debug] Error 2
09:08:26: The process "C:\Qt\Tools\QtCreator\bin\jom.exe" exited with code 2.
Error while building/deploying project pointer_test (kit: Desktop Qt 5.4.1 MSVC2010 OpenGL 32bit)
When executing step "Make"
09:08:26: Elapsed time: 00:03.

最佳答案

确保 standby.cpp 被列为 .pro 文件中的源文件,然后尝试再次运行 QMake(构建 -> 运行 qmake),然后尝试构建。您也可以尝试清理/重建您的项目。

关于c++ - Qt error : LNK1120: 1 unresolved externals main. obj:-1: error: LNK2019 运行Qmake,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/30168845/

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