Qt Creator从应用程序调用静态库时没有任何反应。 我有这些代码行作为我的main.cpp主应用程序文件：
mov那是.Pro文件：
#include "mainwindow.h"
#include <QApplication>
#include<src/main.cpp>
#include <src/john.cpp>
int main(int argc, char *argv[])
{
//John ll;
main2;
// QApplication a2(argc, argv);
// MainWindow w2;
// w2.show();
// MainWindow mainWindow;
// //mainWindow.parseCmdLine(); //modified
// // mainWindow.show();
// return a2.exec();
//return 1;
}
和我的main2.cpp静态库文件如下：
#-------------------------------------------------
#
# Project created by QtCreator 2017-12-08T05:51:54
#
#-------------------------------------------------
QT += core gui
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
TARGET = untitled
TEMPLATE = app
SOURCES += main.cpp\
mainwindow.cpp
HEADERS += mainwindow.h
FORMS += mainwindow.ui
INCLUDEPATH += ../application
LIBS += -L../application/release/ -lApplication
#TARGET = ../app17-exe # move executable one dire up
并且是.pro文件：
/*****************************************************************************
* *
* Elmer, A Finite Element Software for Multiphysical Problems *
* *
* Copyright 1st April 1995 - , CSC - IT Center for Science Ltd., Finland *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program (in file fem/GPL-2); if not, write to the *
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, *
* Boston, MA 02110-1301, USA. *
* *
*****************************************************************************/
/*****************************************************************************
* *
* ElmerGUI main *
* *
*****************************************************************************
* *
* Authors: Mikko Lyly, Juha Ruokolainen and Peter Råback *
* Email: Juha.Ruokolainen@csc.fi *
* Web: http://www.csc.fi/elmer *
* Address: CSC - IT Center for Science Ltd. *
* Keilaranta 14 *
* 02101 Espoo, Finland *
* *
* Original Date: 15 Mar 2008 *
* *
*****************************************************************************/
//#include "mainwindow.h"
//#include <QApplication>
//#include<src/main.cpp>
//int main(int argc, char *argv[])
//{
//main2;
// return a.exec();
//}
#include <QApplication>
//#include <iostream>
#include "mainwindow.h"
using namespace std;
/*
#ifdef __APPLE__
#include <mach-o/dyld.h>
#include <stdlib.h>
#endif
int main2(int argc, char *argv[])
{
MainWindow mainWindow2;
//mainWindow.parseCmdLine(); //modified
mainWindow2.showFullScreen();
#ifdef __APPLE__
// we'll change ENVIRONMENT so that the Elmer binaries and libraries
// hidden wihtin the application bundle will be correctly found
char executablePath[MAXPATHLENGTH] = {0};
uint32_t len = MAXPATHLENGTH;
if(! _NSGetExecutablePath( (char*) executablePath, &len)){
// remove executable name from path:
*(strrchr(executablePath,'/'))='\0';
char *oldValue = 0, *newValue = 0;
oldValue = getenv("PATH");
asprintf(&newValue, "%s/../bin:%s",executablePath,oldValue);
setenv("PATH",newValue,1);
free(newValue);
oldValue = getenv("DYLD_LIBRARY_PATH");
asprintf(&newValue,"%s/../lib:%s",executablePath,oldValue);
setenv("DYLD_LIBRARY_PATH",newValue,0);
free(newValue);
asprintf(&newValue,"%s/..",executablePath);
setenv("ELMER_HOME",newValue,0);
free(newValue);
asprintf(&newValue,"%s/../share/elmerpost",executablePath);
setenv("ELMER_POST_HOME",newValue,0);
free(newValue);
#ifdef DEBUG
printf("PATH = %s\nDYLD_LIBRARY_PATH=%s\nELMER_HOME=%s\n",
getenv("PATH"),
getenv("DYLD_LIBRARY_PATH"),
getenv("ELMER_HOME"));
#endif
}
#endif
//========================================================================
QApplication app(argc, argv);
QStringList argList = QCoreApplication::arguments();
cout << "Usage:" << endl;
if(argList.contains("-h") || argList.contains("--help")) {
cout << "Usage:" << endl;
cout << " ElmerGUI [OPTION [FILE|DIR]]..." << endl;
cout << endl;
cout << "Graphical user interface and mesh generator for Elmer" << endl;
cout << endl;
cout << "Application options:" << endl;
cout << " -h, --help Show help options" << endl;
cout << " -i <string> Select input file" << endl;
cout << " -o <string> Select output dir" << endl;
cout << " -nogui Disable GUI" << endl;
cout << " -e Exit after saving" << endl;
cout << endl;
return 0;
}
MainWindow mainWindow;
//mainWindow.parseCmdLine(); //modified
mainWindow.showFullScreen();
QApplication a(argc, argv);
MainWindow w;
w.show();
printf("sss");
char o;
scanf("%c",o);
// return a.exec();
// return app.exec();
return 900;
}
*/
int main2(int argc, char *argv[])
{
//John ll;
//main2;
QApplication a2(argc, argv);
MainWindow w2;
w2.show();
// MainWindow mainWindow;
//mainWindow.parseCmdLine(); //modified
// mainWindow.show();
return a2.exec();
//return 1;
}
但是当我编译项目时没有任何反应，没有出现错误，但我认为app无法调用静态lib.so我该怎么办？
答案 0 :(得分：1)
main.cpp 中的main应为：
int main(int argc, char *argv[])
{
return main2(argc, argv);
}
你的行
main2;
编译好，但什么都不做。