我是一名学生程序员,我正在使用 Qt 构建一些用于工作的 GUI 应用程序,我一遍又一遍地遇到 moc 问题。我希望能解决我当前遇到的问题;但是,如果在 Qt 方面有更多经验的人可以了解如何在更改 cpp 文件时正确处理这些文件,我将不胜感激。在我最近的更改中(抱歉,我不能发布它的样子,因为它显然已经过重组)我通过在我的 checkData 函数中嵌套一个函数来验证数据。因为我希望每个可能无效的字段都出现特定错误,所以我开始为每个 QLineEdit 创建一个函数。我意识到这不会起作用(或至少做更多的工作),而不是仅仅提供信息的排序检查。
void InjectionDialog::checkData() {
bool validateFluidVelocity;
QString tempStrFluidVelocity;
tempStrFluidVelocity = ui->lineEditFluidVelocity->text();
double convertedFluidVelocity =
tempStrFluidVelocity.toDouble(&validateFluidVelocity);
if (validateFluidVelocity == false) {
QErrorMessage validateErrorFluidVelocityError;
validateErrorFluidVelocityError.
showMessage("Fluid velocity input is invalid");
validateErrorFluidVelocityError.exec();
}
else {
transData.lineEditFluidVelocity = convertedFluidVelocity;
}
bool validateFluidMassFlow;
QString tempStrFluidMassFlow;
tempStrFluidMassFlow = ui->lineEditFluidMassFlow->text();
double convertedFluidMassFlow =
tempStrFluidMassFlow.toDouble(&validateFluidMassFlow);
if (validateFluidMassFlow == false) {
QErrorMessage validateErrorFluidMassFlowError;
validateErrorFluidMassFlowError.
showMessage("Fluid mass flow input is invalid");
validateErrorFluidMassFlowError.exec();
}
else {
transData.lineEditFluidMassFlow = convertedFluidMassFlow;
}
bool validateParticleVelocity;
QString tempStrParticleVelocity;
tempStrParticleVelocity = ui->lineEditParticleVelocity->text();
double convertedParticleVelocity =
tempStrParticleVelocity.toDouble(&validateParticleVelocity);
if (validateParticleVelocity == false) {
QErrorMessage validateErrorParticleVelocity;
validateErrorParticleVelocity.
showMessage("Particle velocity input is invalid");
validateErrorParticleVelocity.exec();
}
else {
transData.lineEditParitcle_sic_Velocity = convertedParticleVelocity;
}
bool validateParticleMassFlow;
QString tempStrParticleMassFlow;
tempStrParticleMassFlow = ui->lineEditParticleMassFlow->text();
double convertedParticleMassFlow =
tempStrParticleMassFlow.toDouble(&validateParticleMassFlow);
if (validateParticleMassFlow == false) {
QErrorMessage validateErrorParticleMassFlow;
validateErrorParticleMassFlow.
showMessage("Particle mass flow input is invalid");
validateErrorParticleMassFlow.exec();
}
else {
transData.lineEditParticleMassFlow = convertedParticleMassFlow;
}
}
最初我有 InjectionDialog::checkFluidVelociy 进行第一次检查,但很快就决定反对它。现在重组代码后,我收到错误消息:
在函数'InjectionDialog::checkFluidVelocity(QMetaObject::Call, int, void**)'中:这个错误被引用到 moc_injectionDialog.o
对“InjectionDialog::checkFluidVelocity()”的未识别引用 此错误引用到 moc_injectiondialog.cpp
在 moc_injectiondialog 我有以下我列出了以下内容:
/****************************************************************************
** Meta object code from reading C++ file 'injectiondialog.h'
**
** Created: Sat Jan 7 21:58:22 2012
** by: The Qt Meta Object Compiler version 62 (Qt 4.7.4)
**
** WARNING! All changes made in this file will be lost!
*****************************************************************************/
#include "../InjectionGUI/injectiondialog.h"
#if !defined(Q_MOC_OUTPUT_REVISION)
#error "The header file 'injectiondialog.h' doesn't include <QObject>."
#elif Q_MOC_OUTPUT_REVISION != 62
#error "This file was generated using the moc from 4.7.4. It"
#error "cannot be used with the include files from this version of Qt."
#error "(The moc has changed too much.)"
#endif
QT_BEGIN_MOC_NAMESPACE
static const uint qt_meta_data_InjectionDialog[] = {
// content:
5, // revision
0, // classname
0, 0, // classinfo
2, 14, // methods
0, 0, // properties
0, 0, // enums/sets
0, 0, // constructors
0, // flags
0, // signalCount
// slots: signature, parameters, type, tag, flags
17, 16, 16, 16, 0x08,
29, 16, 16, 16, 0x08,
0 // eod
};
static const char qt_meta_stringdata_InjectionDialog[] = {
"InjectionDialog\0\0checkData()\0"
"checkFluidVelocity()\0"
};
const QMetaObject InjectionDialog::staticMetaObject = {
{ &QDialog::staticMetaObject, qt_meta_stringdata_InjectionDialog,
qt_meta_data_InjectionDialog, 0 }
};
#ifdef Q_NO_DATA_RELOCATION
const QMetaObject &InjectionDialog::getStaticMetaObject() { return staticMetaObject; }
#endif //Q_NO_DATA_RELOCATION
const QMetaObject *InjectionDialog::metaObject() const
{
return QObject::d_ptr->metaObject ? QObject::d_ptr->metaObject : &staticMetaObject;
}
void *InjectionDialog::qt_metacast(const char *_clname)
{
if (!_clname) return 0;
if (!strcmp(_clname, qt_meta_stringdata_InjectionDialog))
return static_cast<void*>(const_cast< InjectionDialog*>(this));
return QDialog::qt_metacast(_clname);
}
int InjectionDialog::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
{
_id = QDialog::qt_metacall(_c, _id, _a);
if (_id < 0)
return _id;
if (_c == QMetaObject::InvokeMetaMethod) {
switch (_id) {
case 0: checkData(); break;
case 1: checkFluidVelocity(); break;
default: ;
}
_id -= 2;
}
return _id;
}
QT_END_MOC_NAMESPACE
我查看了其他一些 moc_file 帖子,其中大多数都说要让 Qt 清理并重建项目。我已经运行了一个项目清理并重建所有项目以尝试彻底检查这个 moc 文件,但在消除错误方面没有任何成功。这似乎是一个错误,但我在网上找不到任何关于它的信息,所以也许这是我不知道的事情。提前感谢您提供的任何帮助。