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Qt 5设计器QObject :: connect：没有这样的插槽QDialog

2016-10-01 109 views
0

我在Designer中创建连接，然后尝试更改插槽的功能。然后我声明该专用插槽，然后初始化它，生成程序运行后，但连接不起作用。它说QObject::connect: No such slot QDialogQt 5设计器QObject :: connect：没有这样的插槽QDialog

我想问题可能是在其中全自动被Qt 产生dl.h

#ifndef DL_H 
#define DL_H 
#include <QDialog> 


namespace Ui { 
class Dl; 
} 

class Dl : public QDialog 
{ 
    Q_OBJECT 

public: 
    explicit Dl(QWidget *parent = 0); 
    ~Dl(); 

private: 
    Ui::Dl *ui; 
private slots: 
    void print_shit(); 
}; 
#endif

dl.cpp

#include "dl.h" 
#include "ui_dl.h" 
#include <iostream> 


Dl::Dl(QWidget *parent) : 
    QDialog(parent), 
    ui(new Ui::Dl) 
{ 
    ui->setupUi(this); 
} 

Dl::~Dl() 
{ 
    delete ui; 
} 

void Dl::print_shit(){ 

}

的main.cpp

#include <QApplication> 
#include <QQmlApplicationEngine> 
#include "ui_dl.h" 

int main(int argc, char *argv[]) 
{ 
    QApplication app(argc, argv); 
    Ui_Dl * dialog = new Ui_Dl; 
    QDialog *wnd = new QDialog(); 

    dialog->setupUi(wnd); 
    wnd->show(); 

    return app.exec(); 
} 


#ifndef UI_DL_H 
#define UI_DL_H 

#include <QtCore/QVariant> 
#include <QtWidgets/QAction> 
#include <QtWidgets/QApplication> 
#include <QtWidgets/QButtonGroup> 
#include <QtWidgets/QDialog> 
#include <QtWidgets/QGridLayout> 
#include <QtWidgets/QHBoxLayout> 
#include <QtWidgets/QHeaderView> 
#include <QtWidgets/QPushButton> 
#include <QtWidgets/QSlider> 
#include <QtWidgets/QSpinBox> 
#include <QtWidgets/QWidget> 

QT_BEGIN_NAMESPACE 

class Ui_Dl 
{ 
public: 
    QWidget *layoutWidget; 
    QGridLayout *gridLayout; 
    QHBoxLayout *horizontalLayout_2; 
    QPushButton *pushButton_6; 
    QPushButton *knopka; 
    QHBoxLayout *horizontalLayout; 
    QPushButton *pushButton; 
    QPushButton *pushButton_2; 
    QPushButton *pushButton_3; 
    QHBoxLayout *horizontalLayout_3; 
    QPushButton *pushButton_8; 
    QPushButton *pushButton_7; 
    QPushButton *pushButton_9; 
    QSpinBox *spinBox; 
    QSlider *horizontalSlider; 

    void setupUi(QDialog *Dl) 
    { 
     if (Dl->objectName().isEmpty()) 
      Dl->setObjectName(QStringLiteral("Dl")); 
     Dl->setWindowModality(Qt::NonModal); 
     Dl->resize(705, 504); 
     QSizePolicy sizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred); 
     sizePolicy.setHorizontalStretch(0); 
     sizePolicy.setVerticalStretch(0); 
     sizePolicy.setHeightForWidth(Dl->sizePolicy().hasHeightForWidth()); 
     Dl->setSizePolicy(sizePolicy); 
     QPalette palette; 
     QBrush brush(QColor(0, 0, 0, 255)); 
     brush.setStyle(Qt::SolidPattern); 
     palette.setBrush(QPalette::Active, QPalette::WindowText, brush); 
     QBrush brush1(QColor(153, 240, 185, 255)); 
     brush1.setStyle(Qt::SolidPattern); 
     palette.setBrush(QPalette::Active, QPalette::Button, brush1); 
     QBrush brush2(QColor(255, 255, 255, 255)); 
     brush2.setStyle(Qt::SolidPattern); 
     palette.setBrush(QPalette::Active, QPalette::Light, brush2); 
     QBrush brush3(QColor(204, 247, 220, 255)); 
     brush3.setStyle(Qt::SolidPattern); 
     palette.setBrush(QPalette::Active, QPalette::Midlight, brush3); 
     QBrush brush4(QColor(76, 120, 92, 255)); 
     brush4.setStyle(Qt::SolidPattern); 
     palette.setBrush(QPalette::Active, QPalette::Dark, brush4); 
     QBrush brush5(QColor(102, 160, 123, 255)); 
     brush5.setStyle(Qt::SolidPattern); 
     palette.setBrush(QPalette::Active, QPalette::Mid, brush5); 
     palette.setBrush(QPalette::Active, QPalette::Text, brush); 
     palette.setBrush(QPalette::Active, QPalette::BrightText, brush2); 
     palette.setBrush(QPalette::Active, QPalette::ButtonText, brush); 
     palette.setBrush(QPalette::Active, QPalette::Base, brush2); 
     palette.setBrush(QPalette::Active, QPalette::Window, brush1); 
     palette.setBrush(QPalette::Active, QPalette::Shadow, brush); 
     palette.setBrush(QPalette::Active, QPalette::AlternateBase, brush3); 
     QBrush brush6(QColor(255, 255, 220, 255)); 
     brush6.setStyle(Qt::SolidPattern); 
     palette.setBrush(QPalette::Active, QPalette::ToolTipBase, brush6); 
     palette.setBrush(QPalette::Active, QPalette::ToolTipText, brush); 
     palette.setBrush(QPalette::Inactive, QPalette::WindowText, brush); 
     palette.setBrush(QPalette::Inactive, QPalette::Button, brush1); 
     palette.setBrush(QPalette::Inactive, QPalette::Light, brush2); 
     palette.setBrush(QPalette::Inactive, QPalette::Midlight, brush3); 
     palette.setBrush(QPalette::Inactive, QPalette::Dark, brush4); 
     palette.setBrush(QPalette::Inactive, QPalette::Mid, brush5); 
     palette.setBrush(QPalette::Inactive, QPalette::Text, brush); 
     palette.setBrush(QPalette::Inactive, QPalette::BrightText, brush2); 
     palette.setBrush(QPalette::Inactive, QPalette::ButtonText, brush); 
     palette.setBrush(QPalette::Inactive, QPalette::Base, brush2); 
     palette.setBrush(QPalette::Inactive, QPalette::Window, brush1); 
     palette.setBrush(QPalette::Inactive, QPalette::Shadow, brush); 
     palette.setBrush(QPalette::Inactive, QPalette::AlternateBase, brush3); 
     palette.setBrush(QPalette::Inactive, QPalette::ToolTipBase, brush6); 
     palette.setBrush(QPalette::Inactive, QPalette::ToolTipText, brush); 
     palette.setBrush(QPalette::Disabled, QPalette::WindowText, brush4); 
     palette.setBrush(QPalette::Disabled, QPalette::Button, brush1); 
     palette.setBrush(QPalette::Disabled, QPalette::Light, brush2); 
     palette.setBrush(QPalette::Disabled, QPalette::Midlight, brush3); 
     palette.setBrush(QPalette::Disabled, QPalette::Dark, brush4); 
     palette.setBrush(QPalette::Disabled, QPalette::Mid, brush5); 
     palette.setBrush(QPalette::Disabled, QPalette::Text, brush4); 
     palette.setBrush(QPalette::Disabled, QPalette::BrightText, brush2); 
     palette.setBrush(QPalette::Disabled, QPalette::ButtonText, brush4); 
     palette.setBrush(QPalette::Disabled, QPalette::Base, brush1); 
     palette.setBrush(QPalette::Disabled, QPalette::Window, brush1); 
     palette.setBrush(QPalette::Disabled, QPalette::Shadow, brush); 
     palette.setBrush(QPalette::Disabled, QPalette::AlternateBase, brush1); 
     palette.setBrush(QPalette::Disabled, QPalette::ToolTipBase, brush6); 
     palette.setBrush(QPalette::Disabled, QPalette::ToolTipText, brush); 
     Dl->setPalette(palette); 
     Dl->setCursor(QCursor(Qt::ArrowCursor)); 
     Dl->setAutoFillBackground(false); 
     Dl->setSizeGripEnabled(true); 
     layoutWidget = new QWidget(Dl); 
     layoutWidget->setObjectName(QStringLiteral("layoutWidget")); 
     layoutWidget->setGeometry(QRect(140, 90, 421, 351)); 
     gridLayout = new QGridLayout(layoutWidget); 
     gridLayout->setObjectName(QStringLiteral("gridLayout")); 
     gridLayout->setContentsMargins(0, 0, 0, 0); 
     horizontalLayout_2 = new QHBoxLayout(); 
     horizontalLayout_2->setObjectName(QStringLiteral("horizontalLayout_2")); 
     horizontalLayout_2->setSizeConstraint(QLayout::SetNoConstraint); 
     pushButton_6 = new QPushButton(layoutWidget); 
     pushButton_6->setObjectName(QStringLiteral("pushButton_6")); 
     sizePolicy.setHeightForWidth(pushButton_6->sizePolicy().hasHeightForWidth()); 
     pushButton_6->setSizePolicy(sizePolicy); 
     pushButton_6->setMaximumSize(QSize(191, 103)); 
     pushButton_6->setMouseTracking(false); 
     pushButton_6->setAcceptDrops(false); 
     pushButton_6->setAutoFillBackground(false); 
     pushButton_6->setStyleSheet(QStringLiteral("border-image: url(:/new/prefix1/lico);")); 
     pushButton_6->setCheckable(false); 
     pushButton_6->setAutoRepeat(false); 
     pushButton_6->setAutoExclusive(false); 
     pushButton_6->setAutoDefault(true); 
     pushButton_6->setFlat(false); 

     horizontalLayout_2->addWidget(pushButton_6); 

     knopka = new QPushButton(layoutWidget); 
     knopka->setObjectName(QStringLiteral("knopka")); 
     knopka->setEnabled(true); 
     sizePolicy.setHeightForWidth(knopka->sizePolicy().hasHeightForWidth()); 
     knopka->setSizePolicy(sizePolicy); 
     knopka->setSizeIncrement(QSize(0, 0)); 
     knopka->setMouseTracking(false); 
     knopka->setAutoFillBackground(false); 
     knopka->setStyleSheet(QStringLiteral("")); 
     knopka->setCheckable(false); 
     knopka->setAutoDefault(true); 
     knopka->setFlat(false); 

     horizontalLayout_2->addWidget(knopka); 


     gridLayout->addLayout(horizontalLayout_2, 1, 0, 1, 1); 

     horizontalLayout = new QHBoxLayout(); 
     horizontalLayout->setObjectName(QStringLiteral("horizontalLayout")); 
     horizontalLayout->setSizeConstraint(QLayout::SetNoConstraint); 
     pushButton = new QPushButton(layoutWidget); 
     pushButton->setObjectName(QStringLiteral("pushButton")); 
     QSizePolicy sizePolicy1(QSizePolicy::Minimum, QSizePolicy::Preferred); 
     sizePolicy1.setHorizontalStretch(0); 
     sizePolicy1.setVerticalStretch(0); 
     sizePolicy1.setHeightForWidth(pushButton->sizePolicy().hasHeightForWidth()); 
     pushButton->setSizePolicy(sizePolicy1); 
     pushButton->setMouseTracking(false); 
     pushButton->setCheckable(false); 

     horizontalLayout->addWidget(pushButton); 

     pushButton_2 = new QPushButton(layoutWidget); 
     pushButton_2->setObjectName(QStringLiteral("pushButton_2")); 
     sizePolicy1.setHeightForWidth(pushButton_2->sizePolicy().hasHeightForWidth()); 
     pushButton_2->setSizePolicy(sizePolicy1); 
     pushButton_2->setMinimumSize(QSize(125, 104)); 
     pushButton_2->setMouseTracking(false); 
     pushButton_2->setCheckable(false); 

     horizontalLayout->addWidget(pushButton_2); 

     pushButton_3 = new QPushButton(layoutWidget); 
     pushButton_3->setObjectName(QStringLiteral("pushButton_3")); 
     sizePolicy.setHeightForWidth(pushButton_3->sizePolicy().hasHeightForWidth()); 
     pushButton_3->setSizePolicy(sizePolicy); 
     pushButton_3->setMouseTracking(false); 
     pushButton_3->setCheckable(false); 

     horizontalLayout->addWidget(pushButton_3); 


     gridLayout->addLayout(horizontalLayout, 0, 0, 1, 1); 

     horizontalLayout_3 = new QHBoxLayout(); 
     horizontalLayout_3->setObjectName(QStringLiteral("horizontalLayout_3")); 
     horizontalLayout_3->setSizeConstraint(QLayout::SetNoConstraint); 
     pushButton_8 = new QPushButton(layoutWidget); 
     pushButton_8->setObjectName(QStringLiteral("pushButton_8")); 
     sizePolicy1.setHeightForWidth(pushButton_8->sizePolicy().hasHeightForWidth()); 
     pushButton_8->setSizePolicy(sizePolicy1); 
     pushButton_8->setMouseTracking(false); 
     pushButton_8->setStyleSheet(QString::fromUtf8("border-image: url(C:/Users/Acer/Pictures/Screenshot \320\273\320\270\321\206\320\276(\320\260\320\262\320\260\321\202\320\260\321\200).png);")); 
     pushButton_8->setCheckable(false); 

     horizontalLayout_3->addWidget(pushButton_8); 

     pushButton_7 = new QPushButton(layoutWidget); 
     pushButton_7->setObjectName(QStringLiteral("pushButton_7")); 
     sizePolicy1.setHeightForWidth(pushButton_7->sizePolicy().hasHeightForWidth()); 
     pushButton_7->setSizePolicy(sizePolicy1); 
     pushButton_7->setMouseTracking(false); 
     pushButton_7->setStyleSheet(QStringLiteral("border-image: url(:/new/prefix1/lico);")); 
     pushButton_7->setCheckable(false); 

     horizontalLayout_3->addWidget(pushButton_7); 

     pushButton_9 = new QPushButton(layoutWidget); 
     pushButton_9->setObjectName(QStringLiteral("pushButton_9")); 
     sizePolicy.setHeightForWidth(pushButton_9->sizePolicy().hasHeightForWidth()); 
     pushButton_9->setSizePolicy(sizePolicy); 
     pushButton_9->setMouseTracking(false); 
     pushButton_9->setCheckable(false); 

     horizontalLayout_3->addWidget(pushButton_9); 


     gridLayout->addLayout(horizontalLayout_3, 2, 0, 1, 1); 

     spinBox = new QSpinBox(Dl); 
     spinBox->setObjectName(QStringLiteral("spinBox")); 
     spinBox->setGeometry(QRect(590, 250, 101, 121)); 
     horizontalSlider = new QSlider(Dl); 
     horizontalSlider->setObjectName(QStringLiteral("horizontalSlider")); 
     horizontalSlider->setGeometry(QRect(470, 470, 160, 22)); 
     horizontalSlider->setOrientation(Qt::Horizontal); 

     retranslateUi(Dl); 
     QObject::connect(knopka, SIGNAL(clicked()), Dl, SLOT(print_shit())); 

     QMetaObject::connectSlotsByName(Dl); 
    } // setupUi 

    void retranslateUi(QDialog *Dl) 
    { 
     Dl->setWindowTitle(QApplication::translate("Dl", "Dialog", 0)); 
     pushButton_6->setText(QApplication::translate("Dl", "\320\243\320\272\321\200\320\260\320\270\320\275\320\260", 0)); 
     knopka->setText(QApplication::translate("Dl", "\320\234\320\270\321\201\321\202\320\265\321\200 \320\264\321\203\320\264\320\265\321\206", 0)); 
     pushButton->setText(QApplication::translate("Dl", "\320\257 \320\265\320\261\321\203 \321\201\320\276\320\261\320\260\320\272", 0)); 
#ifndef QT_NO_TOOLTIP 
     pushButton_2->setToolTip(QApplication::translate("Dl", "<html><head/><body><p><br/></p></body></html>", 0)); 
#endif // QT_NO_TOOLTIP 
     pushButton_2->setText(QApplication::translate("Dl", "\320\242\321\200\320\260\320\274\320\277", 0)); 
     pushButton_3->setText(QApplication::translate("Dl", "\320\234\320\270\321\201\321\202\321\200\320\265 \320\264\321\203\320\264\320\265\321\206", 0)); 
     pushButton_8->setText(QApplication::translate("Dl", "\320\242\321\200\320\260\320\274\320\277", 0)); 
     pushButton_7->setText(QApplication::translate("Dl", "\320\243\320\272\321\200\320\260\320\270\320\275\320\260", 0)); 
     pushButton_9->setText(QApplication::translate("Dl", "\320\257 \320\265\320\261\321\203 \321\201\320\276\320\261\320\260\320\272", 0)); 
    } // retranslateUi 

}; 

namespace Ui { 
    class Dl: public Ui_Dl {}; 
} // namespace Ui 

QT_END_NAMESPACE 

#endif // UI_DL_H
ui_dl.h

来源

2016-10-01 Андрей Поплавский

回答

0

我看到两个可能的问题：

  1. 您传递*分升了QDialog到SetupUI：

    void setupUi(QDialog *Dl) { 
… 
}

    但是你的插槽在您的自定义类Dl定义。所以Qt说QDialog没有一个名为print_shit()的插槽。

  2. 此外connectSlotsByName需要你的插槽遵循一定的naming convention：

无效QMetaObject :: connectSlotsByName（QObject的*对象）

递归搜索对给定的所有子对象对象，并将来自它们的匹配信号连接到遵循以下形式的对象的插槽：

void on_<object name>_<signal name>(<signal parameters>);

我们假设我们的对象有一个类型为QPushButton的子对象，其对象名为button1。插槽赶按钮的点击（）信号将是：

void on_button1_clicked();

你似乎并不在你的Dl类有这样的插槽。

来源

2016-10-05 10:58:20

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