C++ Qt:无法对MyClass类型的参数进行排队
我试着通过这个信号来传递我的课堂:C++ Qt:无法对MyClass类型的参数进行排队,c++,qt,signals-slots,qthread,C++,Qt,Signals Slots,Qthread,我试着通过这个信号来传递我的课堂: connect(this, SIGNAL(SIG_connectSerial(SerialSetting::Settings)), serial, SLOT(openConnection(SerialSetting::Settings)),Qt::QueuedConnection); 我想通过的课程是: #ifndef SERIALSETTING_H #define SERIALSETTING_H #include <QWidget> #inc
connect(this, SIGNAL(SIG_connectSerial(SerialSetting::Settings)), serial, SLOT(openConnection(SerialSetting::Settings)),Qt::QueuedConnection);
我想通过的课程是:
#ifndef SERIALSETTING_H
#define SERIALSETTING_H
#include <QWidget>
#include <QtSerialPort/QSerialPort>
namespace Ui {
class SerialSetting;
}
class QIntValidator;
class SerialSetting : public QWidget
{
Q_OBJECT
public:
struct Settings {
QString portName;
qint32 baudRate;
};
Settings settings();
public:
explicit SerialSetting(QWidget *parent = 0);
~SerialSetting();
private slots:
void apply();
void on_btnApply_clicked();
private:
void fillPortsParameters();
void fillPortsInfo();
void updateSettings();
private:
Ui::SerialSetting *ui;
Settings currentSettings;
QIntValidator *intValidator;
};
#endif // SERIALSETTING_H
#include "serialsetting.h"
#include "ui_serialsetting.h"
#include <QtSerialPort/QSerialPortInfo>
#include <QIntValidator>
#include <QLineEdit>
QT_USE_NAMESPACE
static const char blankString[] = QT_TRANSLATE_NOOP("SettingsDialog", "N/A");
SerialSetting::SerialSetting(QWidget *parent) :
QWidget(parent),
ui(new Ui::SerialSetting)
{
ui->setupUi(this);
intValidator = new QIntValidator(0, 4000000, this);
//ui->cboBaudRate->setInsertPolicy(QComboBox::NoInsert);
fillPortsParameters(); //call function to fill comboboxes
connect(ui->btnApply, SIGNAL(clicked()),this, SLOT(apply()));
}
SerialSetting::~SerialSetting()
{
delete ui;
}
void SerialSetting::fillPortsParameters()
{
//fill cboComport with all available comports
foreach(const QSerialPortInfo &info, QSerialPortInfo::availablePorts())
{
ui->cboComport->addItem(info.portName());
}
}
void SerialSetting::apply()
{
SerialSetting::currentSettings.portName = ui->cboComport->currentText();
hide();
}
SerialSetting::Settings SerialSetting::settings()
{
return SerialSetting::currentSettings;
}
void SerialSetting::on_btnApply_clicked()
{
}
在类标题末尾添加MakroQ\u DECLARE\u元类型(Ui::SerialSetting)
会引发另一个错误:
invalid application of 'sizeof' to incomplete type 'Ui::SerialSetting'
isLarge = (sizeof(T)>sizeof(void*)),
不能对正向声明的类(
Ui::SerialSetting
)调用Q\u DECLARE\u元类型。此外,还需要声明信号用作参数的类型,在本例中为SerialSetting::Settings
替换
Q_DECLARE_METATYPE(Ui::SerialSetting)
与
您应该很好。您不能对前向声明的类(Ui::SerialSetting
)调用Q\u DECLARE\u元类型。此外,还需要声明信号用作参数的类型,在本例中为SerialSetting::Settings
替换
Q_DECLARE_METATYPE(Ui::SerialSetting)
与
您应该很好。完全按照错误消息所说的去做!添加宏Qt的错误后发生了什么?在类的头文件末尾添加Q_DECLARE_元类型(Ui::SerialSetting)后,编译器显示以下消息:“sizeof”对不完整类型“Ui::SerialSetting”isLarge=(sizeof(T)>sizeof(void*)的应用无效,您可能需要添加一个include。你能指出这个错误是在哪个文件/行上吗?编译器说错误发生在第60行的qtypeinfo.h文件中。请严格按照错误消息所说的去做!添加宏Qt的错误后发生了什么?在类的头文件末尾添加Q_DECLARE_元类型(Ui::SerialSetting)后,编译器显示以下消息:“sizeof”对不完整类型“Ui::SerialSetting”isLarge=(sizeof(T)>sizeof(void*)的应用无效,您可能需要添加一个include。你能指出这个错误在哪个文件/行上吗?编译器说错误发生在第60行的qtypeinfo.h文件中。。
Q_DECLARE_METATYPE(SerialSetting::Settings)