我一直在Qt问题上苦苦挣扎.
这是我的代码:
hexbutton.h:
#ifndef HEXBUTTON_H
#define HEXBUTTON_H
#include <QPushButton>
#include <QWidget>
#include <QIcon>
class HexButton : public QPushButton
{
Q_OBJECT
public:
HexButton(QWidget *parent, QIcon &icon, int i, int j);
public slots:
void changeIcon();
};
#endif // HEXBUTTON_H
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Hexbutton.cpp:
#include "hexbutton.h"
HexButton::HexButton(QWidget *parent, QIcon &icon, int i , int j) : QPushButton(parent){
//setFlat(true);
setIcon(icon);
setGeometry((i*40)+((j*40)/2), j*40, 40, 40);
}
void HexButton::changeIcon(){
setIcon(QIcon("/Users/jonathanbibas/Documents/Workspace Qt/Test/hexagon.gif"));
}
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MyWindow.h:
#ifndef MYWINDOW_H
#define MYWINDOW_H
#include <QApplication>
#include <QWidget>
#include <QPushButton>
#include <QLCDNumber>
#include <QSlider>
#include <QProgressBar>
#include "hexbutton.h"
class MyWindow : public QWidget
{
public:
MyWindow();
~MyWindow();
private:
HexButton * myButtons[11][11];
};
#endif // MYWINDOW_H
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MyWindow.cpp:
#include "MyWindow.h"
#include <QColor>
#include <QIcon>
MyWindow::MyWindow() : QWidget() {
setFixedSize(740, 440);
QIcon icon = QIcon("/Users/jonathanbibas/Documents/Workspace Qt/Test/whitehexagon.png");
for(int i =0 ; i < 11 ; i ++){
for(int j =0 ; j < 11 ; j ++){
myButtons[i][j] = new HexButton(this, icon, i, j);
QObject::connect(myButtons[i][j], SIGNAL(clicked()), myButtons[i][j], SLOT(changeIcon()));
}
}
}
MyWindow::~MyWindow()
{
delete myButtons;
}
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最后,Main.cpp:
#include <QApplication>
#include "MyWindow.h"
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
MyWindow fenetre;
fenetre.show();
return app.exec();
}
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以防万一,这是Test.pro
SOURCES += \
Main.cpp \
MyWindow.cpp \
hexbutton.cpp
HEADERS += \
MyWindow.h \
hexbutton.h
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我得到了2个错误:
1)未找到架构x86_64的符号
2)collect2:ld返回1退出状态
它也说了121次(11*11):
Object :: connect:在../Test/MyWindow.cpp:19中没有这样的插槽QPushButton :: changeIcon()
并在编译输出上说:
18:22:15: Running build steps for project Test...
18:22:15: Configuration unchanged, skipping qmake step.
18:22:15: Starting: "/usr/bin/make" -w
make: Entering directory `/Users/jonathanbibas/Documents/Workspace Qt/Test-build-desktop-Desktop_Qt_4_8_0_for_GCC__Qt_SDK__Debug'
g++ -c -pipe -g -gdwarf-2 -arch x86_64 -Xarch_x86_64 -mmacosx-version-min=10.5 -Wall -W -DQT_GUI_LIB -DQT_CORE_LIB -I../../../QtSDK/Desktop/Qt/4.8.0/gcc/mkspecs/macx-g++ -I../Test -I../../../QtSDK/Desktop/Qt/4.8.0/gcc/lib/QtCore.framework/Versions/4/Headers -I../../../QtSDK/Desktop/Qt/4.8.0/gcc/include/QtCore -I../../../QtSDK/Desktop/Qt/4.8.0/gcc/lib/QtGui.framework/Versions/4/Headers -I../../../QtSDK/Desktop/Qt/4.8.0/gcc/include/QtGui -I../../../QtSDK/Desktop/Qt/4.8.0/gcc/include -I. -I../Test -I. -F/Users/jonathanbibas/QtSDK/Desktop/Qt/4.8.0/gcc/lib -o hexbutton.o ../Test/hexbutton.cpp
g++ -headerpad_max_install_names -arch x86_64 -Xarch_x86_64 -mmacosx-version-min=10.5 -o Test.app/Contents/MacOS/Test Main.o MyWindow.o hexbutton.o moc_MyWindow.o -F/Users/jonathanbibas/QtSDK/Desktop/Qt/4.8.0/gcc/lib -L/Users/jonathanbibas/QtSDK/Desktop/Qt/4.8.0/gcc/lib -framework QtGui -framework QtCore
Undefined symbols for architecture x86_64:
"vtable for HexButton", referenced from:
HexButton::HexButton(QWidget*, QIcon&, int, int)in hexbutton.o
HexButton::HexButton(QWidget*, QIcon&, int, int)in hexbutton.o
NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
ld: symbol(s) not found for architecture x86_64
collect2: ld returned 1 exit status
make: *** [Test.app/Contents/MacOS/Test] Error 1
make: Leaving directory `/Users/jonathanbibas/Documents/Workspace Qt/Test-build-desktop-Desktop_Qt_4_8_0_for_GCC__Qt_SDK__Debug'
18:22:20: The process "/usr/bin/make" exited with code 2.
Error while building project Test (target: Desktop)
When executing build step 'Make'
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显然错误来自Q_OBJECT(插槽定义所需),但我的代码有问题,而不是我的编译器(因为我有插槽在MainWindow时,它工作正常).
谢谢您的帮助!
TRS*_*TRS 15
面临同样的问题
我这样做并为我工作
它编译得很好.
通常,由于您的构建系统,Qt 会发生这种情况 - 这表明您没有在由以下代码生成的代码中进行编译/链接moc
我很确定你的代码没有任何问题 - 所以错误一定是在 qt 创建者的某些设置中,我无法真正帮助它,因为我没有太多使用它。
如果您还没有这样做,您可以尝试向 hexbutton.hpp 添加显式的空析构函数声明,并向 hexbutton.cpp 添加定义。这不应该是必要的,但我听说这会对一些奇怪的编译器/链接器产生影响。
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