我創建了一個Qt項目,並添加了一個QPushButton,其樣式是使用QEvent和QMouseEvent自定義的。我添加了一個插槽到這個按鈕,但它沒有工作。 這裏是象礦一個項目:QEvent信號和插槽
部首1:
#ifndef MYQPUSHBUTTON_H
#define MYQPUSHBUTTON_H
#include <QPushButton>
#include <QPalette>
class myQPushButton : public QPushButton
{
Q_OBJECT
public:
explicit myQPushButton(QWidget *parent = 0);
~myQPushButton();
void enterEvent(QEvent*);
void leaveEvent(QEvent*);
void mousePressEvent(QMouseEvent * );
void mouseReleaseEvent(QMouseEvent * );
signals:
public slots:
private:
QPalette *palette;
};
#endif // MYQPUSHBUTTON_H
標題2:
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include "myQPushButton/myqpushbutton.h"
namespace Ui {
class MainWindow;
}
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
private:
Ui::MainWindow *ui;
myQPushButton *button;
};
#endif // MAINWINDOW_H
源1:
#include "myqpushbutton.h"
myQPushButton::myQPushButton(QWidget *parent) :
QPushButton(parent)
{
setFixedSize(200,200);
setIconSize(QSize(200,200));
setIcon(QIcon("D:/clockbox/qt/clockbox/exit_button_wwin_norm.png"));
setFlat(true);
}
myQPushButton::~myQPushButton()
{
}
void myQPushButton::enterEvent(QEvent*)
{
setIcon(QIcon("D:/clockbox/qt/clockbox/exit_button_wwin_enter.png"));
}
void myQPushButton::leaveEvent(QEvent*)
{
setIcon(QIcon("D:/clockbox/qt/clockbox/exit_button_wwin_norm.png"));
}
void myQPushButton::mousePressEvent(QMouseEvent *)
{
setIcon(QIcon("D:/clockbox/qt/clockbox/exit_button_wwin_pressed.png"));
}
void myQPushButton::mouseReleaseEvent(QMouseEvent *)
{
setIcon(QIcon("D:/clockbox/qt/clockbox/exit_button_wwin_enter.png"));
}
源2:
#include "mainwindow.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();
myQPushButton y;
QObject::connect(y, SIGNAL(clicked()), &w, SLOT(close()));
return a.exec();
}
源3:
#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
button = new myQPushButton(this);
setCentralWidget(button);
}
MainWindow::~MainWindow()
{
delete ui;
}
我得到源2此錯誤:
錯誤:調用「QObject的不匹配函數::連接(myQPushButton &,爲const char *,主窗口*,常量char *)' QObject :: connect(y,SIGNAL(clicked()),& w,SLOT(close())); ^
我希望這個按鈕是一個退出按鈕。有人可以幫助我嗎?
也許w :: close()? –
也許'... connect(&y ....'''y'變量不是指針 – vahancho