我是Q的新手.我有以下问题:我想在Qt头部公共部分中实例化一个CLEyeCameraCapture对象,但是我从CLEyeCameraCapture.h中获得了很多语法错误.
我得到以下(德语)语法错误:
CLEyeCameraCapture.h(7) : error C2146: Syntaxfehler: Fehlendes ‘;’ vor
Bezeichner ‘_windowName’ CLEyeCameraCapture.h(7) : error C4430:
Fehlender Typspezifizierer – int wird angenommen. Hinweis:
“default-int” wird von C++ nicht unterstützt.CLEyeCameraCapture.h(7): error C4430: Fehlender Typspezifizierer – int wird angenommen.
Hinweis: “default-int” wird von C++ nicht unterstützt.CLEyeCameraCapture.h(8) : error C2146: Syntaxfehler: Fehlendes ‘;’ vor
Bezeichner ‘_cameraGUID’ CLEyeCameraCapture.h(8) : error C4430:
Fehlender Typspezifizierer – int wird angenommen. Hinweis:
“default-int” wird von C++ nicht unterstützt.
…等等…
在此先感谢您的帮助.这是我的代码:
qtdevc.h(我的应用程序类的标题)
#ifndef QTDEVC_H
#define QTDEVC_H
#include <QtGui/QMainWindow>
#include "ui_qtdevc.h"
#include <QString>
#include <QDebug>
#include <CLEyeCameraCapture.h>
#include <stdafx.h>
class qtDEVC : public QMainWindow
{
Q_OBJECT
public:
qtDEVC(QWidget *parent = 0, Qt::WFlags flags = 0);
~qtDEVC();
Ui::qtDEVCClass ui;
CLEyeCameraCapture::CLeyeCameraCapture cam;
private:
QPushButton *PushButton_startCam;
QPushButton *PushButton_stopCam;
QPushButton *PushButton_startLogging;
QPushButton *PushButton_quit;
QLineEdit *lineEditID;
// begin new code
public slots:
int startCam();
void stopCam();
void quit();
// end new code
};
#endif // QTDEVC_H
CLEyeCameraCapture.h
#ifndef CLEYECAMERACAPTURE_H
#define CLEYECAMERACAPTURE_H
// Sample camera capture class
class CLEyeCameraCapture
{
CHAR _windowName[256];
GUID _cameraGUID;
CLEyeCameraInstance _cam;
CLEyeCameraColorMode _mode;
CLEyeCameraResolution _resolution;
float _fps;
HANDLE _hThread;
bool _running;
std::string _participant;
public:
CLEyeCameraCapture(LPSTR windowName, GUID cameraGUID, CLEyeCameraColorMode mode, CLEyeCameraResolution resolution, float fps) :
_cameraGUID(cameraGUID), _cam(NULL), _mode(mode), _resolution(resolution), _fps(fps), _running(false)
{
strcpy(_windowName, windowName);
}
double GetRandomNormalized();
bool StartCapture(std::string ID);
void StopCapture();
void IncrementCameraParameter(int param);
void DecrementCameraParameter(int param);
void Run();
static DWORD WINAPI CaptureThread(LPVOID instance);
};
我的Qt应用程序(尚未清理)
#include "qtdevc.h"
#include <QtGui>
#include <QDebug>
#include <QtGui/QApplication>
#include "stdafx.h"
#include "CLEyeCameraCapture.h"
using namespace std;
qtDEVC::qtDEVC(QWidget *parent, Qt::WFlags flags)
: QMainWindow(parent, flags)
{
ui.setupUi(this);
connect (ui.pushButton_startCam, SIGNAL( clicked() ),this,SLOT( startCam() ) );
connect (ui.pushButton_quit, SIGNAL( clicked() ),this,SLOT( quit() ) );
connect (ui.pushButton_stopCam, SIGNAL ( clicked() ),this,SLOT( stopCam() ) );
}
qtDEVC::~qtDEVC()
{
}
//get ID of participant
int qtDEVC::startCam()
{
//qt part
//ui.startCam->setText("Hi!");
QString ID;
//get qString Participant Number
ID = ui.lineEditID->text();
//convert to standard string
std::string IDString = ID.toLocal8Bit().constData();
//qDebug()<<ID;
ui.lineEditID->setDisabled(true);
ui.pushButton_startCam->setDisabled(true);
//moved this to here from main
CLEyeCameraCapture *cam[2] = { NULL };
srand(GetTickCount());
// Query for number of connected cameras
…
编辑
包含
“#include ” before “#include ” in
qDEVC.h
解决了编译中语法错误的问题,但现在我在尝试实现时遇到错误C2146,C3210和C2602
CLEyeCameraCapture::CLeyeCameraCapture cam;
什么是正确的方法?
CLEyeCameraCapture::CLeyeCameraCapture *cam[2]; ??
最佳答案 要修复编译错误,
Please Include "#include <stdafx.h>" before "#include <CLEyeCameraCapture.h>" in qDEVC.h.
了解更多信息Compiler Error C2146
规则:首先包含标准标题,然后是您自己的标题C++ Header order的最佳做法