Code: Alles auswählen
#include<QWidget>
class LCD;
class QLCDNumber;
class ErgebnisLCD:public QWidget
{
Q_OBJECT
private:
QLCDNumber*lcd3;
int value;
LCD*lcd1;
LCD*lcd2;
public:
ErgebnisLCD(LCD* lcd1,LCD* lcd2,QWidget* parent=0);
//expected ) before '*' token
public slots:
void calculate();
void showValue();
};
Code: Alles auswählen
//ErgebnisLCD.h
#define ErgebnisLCD
#include<QWidget>
class LCD;
class QLCDNumber;
class ErgebnisLCD:public QWidget
{/*<----- an anonymous union cannot have function members */
Q_OBJECT
private:
QLCDNumber* lcd3;
int value;
LCD*lcd1;
LCD*lcd2;
public:
ErgebnisLCD(LCD* lcd1,LCD* lcd2,QWidget* parent=0);/*<-----
expected `)' before '*' token*/
public slots:
void calculate();
void showValue();
};/*<---- abstract declarator `<anonymous class>' used as declaration
namespace-scope anonymous aggregates must be static */
#endif
Code: Alles auswählen
//main.cpp
#include"ErgebnisLCD.h"
#include<QApplication>
#include<QWidget>
#include<QGridLayout>
class MyWindow:public QWidget
{
public:
MyWindow(QWidget*parent=0)
:QWidget(parent)
{
LCD*lcd1=new LCD;
LCD*lcd2=new LCD;
ErgebnisLCD* lcd3=new ErgebnisLCD(lcd1,lcd2);/*<------
`lcd3' undeclared (first use this function)
expected identifier before ';' token */
QGridLayout*grid=new QGridLayout;
grid->addWidget(lcd1,0,0);
grid->addWidget(lcd2,0,1);
grid->addWidget(lcd3,0,2);
setLayout(grid);
}
};
int main(int argc,char* argv[])
{
QApplication app(argc,argv);
MyWindow window;
window.show();
return app.exec();
}
