我的脚本遇到了一些问题。一切都很好，但现在当我#include一个文件时，我会在指向另一个类的任何行上发生错误。像这些（实际上有12个......）：
x:\development\inkpuppet\newdialog.h:20: error: C2143: syntax error : missing ';' before '*'
x:\development\inkpuppet\newdialog.h:20: error: C4430: missing type specifier - int assumed. Note: C++ does not support default-int
当我说InkPuppet *pointerToPuppet;
编辑：我不能放入标题的包含是inkpuppet.h标题中的inkspot.h。
对于每个指针，我得到上面两个错误x3。
然后我得到错误，因为显然指针不再有效。
我将继续发布我的所有代码，因为我不知道哪些部分是相关的。
inkpuppet.h
#ifndef INKPUPPET_H
#define INKPUPPET_H
#include "inkspot.h"
//#include "ui_inkpuppet.h"
#include <QMainWindow>
#include <QWidget>
namespace Ui {
class InkPuppet;
}
class InkPuppet : public QMainWindow
{
Q_OBJECT
public:
explicit InkPuppet(QWidget *parent = 0);
~InkPuppet();
Ui::InkPuppet *ui;
private slots:
void setMinimum(int value);
void setMaximum(int value);
void actionNew();
void actionAbout();
void setSpacing(int);
void on_colorAButton_clicked();
};
#endif // INKPUPPET_H
inkpuppet.cpp
#include "inkpuppet.h"
#include "ui_inkpuppet.h"
#include "newdialog.h"
#include "aboutdialog.h"
#include "inkspot.h"
#include <Qt>
#include <QtCore>
#include <QtGui>
#include <QWidget>
#include <QDialog>
#include <QMainWindow>
#include <QDebug>
#include <QColorDialog>
InkPuppet::InkPuppet(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::InkPuppet)
{
ui->setupUi(this);
//connect the frame range boxes to the timeslider
connect(ui->lowerFrameBox, SIGNAL(valueChanged(int)), this, SLOT(setMinimum(int)));
connect(ui->upperFrameBox, SIGNAL(valueChanged(int)), this, SLOT(setMaximum(int)));
//connect tool palette items
connect(ui->spacingBox, SIGNAL(valueChanged(int)), this, SLOT(setSpacing(int)));
connect(ui->colorAButton, SIGNAL(clicked()), this, SLOT(on_colorAButton_clicked()));
//connect the menu items
connect(ui->actionNew, SIGNAL(triggered()), this, SLOT(actionNew()));
connect(ui->actionAbout, SIGNAL(triggered()), this, SLOT(actionAbout()));
}
void InkPuppet::setMinimum(int value)
{
ui->timeSlider->setMinimum(value);
ui->frameNumberBox->setMinimum(value);
}
void InkPuppet::setMaximum(int value)
{
ui->timeSlider->setMaximum(value);
ui->frameNumberBox->setMaximum(value);
}
void InkPuppet::setSpacing(int)
{
InkSpot *spot = new InkSpot(this);
//spot->puppet = this;
spot->spacing = ui->spacingBox->value();
}
//menu items
void InkPuppet::actionNew()
{
NewDialog *nDialog = new NewDialog;
//nDialog->createNew(this);
nDialog->pointerToPuppet = this;
nDialog->setModal(true);
nDialog->show();
}
void InkPuppet::actionAbout()
{
AboutDialog *aDialog = new AboutDialog;
aDialog->setModal(true);
aDialog->show();
}
//tool menu
void InkPuppet::on_colorAButton_clicked()
{
// QColor color = QColorDialog(QColor->setRgb(255, 0, 0));
// //color->setRgb(0, 0, 0);
// qDebug() << "done";
// if(color->isValid())
// {
// QString qss = QString("background-color: %1").arg(color->name());
// ui->colorAButton->setStyleSheet(qss);
// }
}
InkPuppet::~InkPuppet()
{
delete ui;
}
inkspot.h
#ifndef INKSPOT_H
#define INKSPOT_H
#include "newdialog.h"
//#include "inkpuppet.h"
#include <QObject>
#include <QWidget>
#include <QPainter>
#include <QPaintEvent>
#include <QLabel>
#include <QPoint>
#include <QImage>
namespace Ui {
class InkSpot;
}
class InkSpot : public QWidget
{
Q_OBJECT
public:
explicit InkSpot(QWidget *parent = 0);
void draw(QPainter *painter);
QWidget *widget;
int canvasWidth;
int canvasHeight;
float spacing;
NewDialog *newDialog;
QPixmap pixmap;
signals:
//int sendWidthOfCanvas();
//void sendHeightOfCanvas();
public slots:
//void widthOfCanvas();
//void heightOfCanvas();
protected:
void mousePressEvent(QMouseEvent *event);
void mouseMoveEvent(QMouseEvent *event);
void mouseReleaseEvent(QMouseEvent *event);
void paintEvent(QPaintEvent *event);
private:
void drawLineTo(const QPoint &endPoint);
bool drawing;
QPoint lastPoint;
QImage image;
QImage test2;
Ui::InkSpot *ui;
};
#endif // INKSPOT_H
inkspot.cpp
#include "inkspot.h"
#include "inkpuppet.h"
#include "ui_inkpuppet.h"
#include "newdialog.h"
#include "ui_newdialog.h"
#include <QtCore>
#include <QtGui>
#include <QWidget>
#include <QPainter>
#include <QPaintEvent>
InkSpot::InkSpot(QWidget *parent) :
QWidget(parent)
{
widget = this;
drawing = false;
//spacing = puppet->ui->spacingBox->value();
spacing = 1;//puppet->ui->spacingBox->value();
}
void InkSpot::mousePressEvent(QMouseEvent *event)
{
if(event->button() == Qt::LeftButton)
{
lastPoint = event->pos();
drawing = true;
}
}
void InkSpot::mouseMoveEvent(QMouseEvent *event)
{
if((event->buttons() & Qt::LeftButton) && drawing)
{
drawLineTo(event->pos());
}
}
void InkSpot::mouseReleaseEvent(QMouseEvent *event)
{
if(event->button() == Qt::LeftButton && drawing)
{
drawLineTo(event->pos());
drawing = false;
}
}
void InkSpot::drawLineTo(const QPoint &endPoint)
{
QPainter painter(&pixmap);
painter.setPen(Qt::NoPen);
painter.setBrush(Qt::NoBrush);
QFile *stencilInput; // file for input, assumes a SQUARE RAW 8 bit grayscale image, no JPG no GIF, no size/format header, just 8 bit values in the file
char *brushPrototype; // raw brush prototype
uchar *brushData; // raw brush data
stencilInput = new QFile("C:/brush3.raw"); // open raw file
stencilInput->open(QIODevice::ReadOnly);
QDataStream in;
in.setDevice(stencilInput);
int size = stencilInput->size(); // set size to the length of the raw file
brushPrototype = new char[size]; // create the brush prototype array
in.readRawData(brushPrototype, size); // read the file into the prototype
brushData = new uchar[size]; // create the uchar array you need to construct QImage
for (int i = 0; i < size; ++i)
brushData[i] = (uchar)brushPrototype[i]; // copy the char to the uchar array
QImage test(brushData, 128, 128, QImage::Format_Indexed8); // create QImage from the brush data array
// 128x128 was my raw file, for any file size just use the square root of the size variable provided it is SQUARE
QImage test2(128, 128, QImage::Format_ARGB32);
QVector<QRgb> vectorColors(256); // create a color table for the image
for (int c = 0; c < 256; c++)
vectorColors[c] = qRgb(c, c, c);
test.setColorTable(vectorColors); // set the color table to the image
for (int iX = 0; iX < 128; ++iX) // fill all pixels with 255 0 0 (red) with random variations for OIL PAINT effect
// use your color of choice and remove random stuff for solid color
// the fourth parameter of setPixel is the ALPHA, use that to make your brush transparent by multiplying by opacity 0 to 1
{
for (int iY = 0; iY < 128; ++iY)
{
test2.setPixel(iX, iY, qRgba(255, 100, 100, (255-qGray(test.pixel(iX, iY)))*0.5));
}
}
// final convertions of the stencil and color brush
QPixmap testPixmap = QPixmap::fromImage(test2);
QPixmap testPixmap2 = QPixmap::fromImage(test);
painter.setBrush(Qt::NoBrush);
painter.setPen(Qt::NoPen);
// in a paint event you can test out both pixmaps
// QLineF line = QLineF(lastPoint, endPoint);
// float lineLength = line.length();
// qDebug() << line.length();
// line.setLength(100.01f);
// qDebug() << line.length();
QPainterPath path = QPainterPath(lastPoint);
path.lineTo(endPoint);
//qDebug() << path.currentPosition();
//qDebug() << path.length();
qreal length = path.length();
qreal pos = 0;
while (pos < length)
{
qreal percent = path.percentAtLength(pos);
painter.drawPixmap(path.pointAtPercent(percent).x() - 16, path.pointAtPercent(percent).y() - 16, 32, 32, testPixmap);
pos += spacing;
}
//painter.drawPixmap(line.p1().x() - 16, line.p1().y() - 16, 32, 32, testPixmap);
//delete all dynamically allocated objects with no parents
delete [] brushPrototype;
delete [] brushData;
delete stencilInput;
lastPoint = endPoint;
}
void InkSpot::paintEvent(QPaintEvent *event)
{
QPainter painter(this);
painter.setPen(Qt::NoPen);
painter.setBrush(Qt::NoBrush);
QRect rect = event->rect();
painter.drawPixmap(rect, pixmap, rect);
qDebug() << spacing;
update();
}
newdialog.h
#ifndef NEWDIALOG_H
#define NEWDIALOG_H
//#include "ui_newdialog.h"
#include "inkpuppet.h"
#include <QDialog>
namespace Ui {
class NewDialog;
}
class NewDialog : public QDialog
{
Q_OBJECT
public:
explicit NewDialog(QWidget *parent = 0);
~NewDialog();
InkPuppet *pointerToPuppet;
Ui::NewDialog *ui;
public slots:
//void createNew(InkPuppet *existingPuppet);
void createNew();
};
#endif // NEWDIALOG_H
newdialog.cpp
#include "newdialog.h"
#include "ui_newdialog.h"
#include "inkpuppet.h"
#include "ui_inkpuppet.h"
#include "inkspot.h"
#include <QDebug>
#include <QSignalMapper>
#include <QObject>
#include <QtOpenGL/QGLWidget>
NewDialog::NewDialog(QWidget *parent) :
QDialog(parent),
ui(new Ui::NewDialog)
{
ui->setupUi(this);
connect(ui->buttonBox, SIGNAL(accepted()), SLOT(createNew()));
//connect(ui->buttonBox, SIGNAL(accepted()), SLOT(createNew(InkPuppet*)));
}
void NewDialog::createNew()
{
InkSpot *ink;
ink = new InkSpot();
ink->newDialog = this;
pointerToPuppet->ui->canvas->addWidget(ink->widget);
//QSize size = pointerToPuppet->ui->canvas->sizeHint();
ink->widget->resize(ui->widthBox->value(), ui->heightBox->value());
pointerToPuppet->ui->scrollCanvasItems->resize(ui->widthBox->value(), ui->heightBox->value());
//pointerToPuppet->ui->canvas->setAlignment(ink->widget, Qt::AlignAbsolute);
ink->pixmap = QPixmap(QSize(ui->widthBox->value(), ui->heightBox->value()));
close();
}
NewDialog::~NewDialog()
{
delete ui;
}
的main.cpp
#include "inkpuppet.h"
#include "inkspot.h"
#include "newdialog.h"
#include "aboutdialog.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
InkPuppet w;
w.show();
return a.exec();
}
答案 0 :(得分：4)
您有循环依赖项。 “inkpuppet.h”包括“inkspot.h”，其中包括“newdialog.h”，其中包括“inkpuppet.h”。改为使用前向声明，尽可能使用。
答案 1 :(得分：4)
你有一个循环包含，由你的标题监护人阻止。这意味着在你的newdialog.h中，行#include "inkpuppet.h"什么都不做，导致InkPuppet类没有被声明。您需要通过前向声明class InkPuppet;替换include行，并且不要忘记将该文件包含在cpp中（在这种情况下，您已经拥有它）。