How to set my QPushbutton's background?

[cookie1909]

Here's my code:

mywindow.h (ui_form.h was generated using Qt Designer, it's huge so I won't put it here)

#ifndef MYWINDOW_H
#define MYWINDOW_H
 
#include <QMainWindow>
#include <QColor>
#include "ui_form.h"
 
class MyWindow1 : public QMainWindow
{
    Q_OBJECT 
 
    public:
        MyWindow1(const Ui::Form& ui);
        ~MyWindow1() {}
 
        void setTimer(int ms);
 
    public slots:
        void blink() ;
 
    private:
        Ui::Form mUi;
        QColor mColor;
};
 
#endif

#ifndef MYWINDOW_H
#define MYWINDOW_H

#include <QMainWindow>
#include <QColor>
#include "ui_form.h"

class MyWindow1 : public QMainWindow
{
    Q_OBJECT 

    public:
        MyWindow1(const Ui::Form& ui);
        ~MyWindow1() {}

        void setTimer(int ms);

    public slots:
        void blink() ;

    private:
        Ui::Form mUi;
        QColor mColor;
};

#endif

To copy to clipboard, switch view to plain text mode 

mywindow.cpp

#include <QPalette>
#include <QIcon>
#include <QtCore/QTimer>
#include "mywindow.h"
 
MyWindow1::MyWindow1(const Ui::Form& ui) : QMainWindow()
{
    mUi = ui;
    mUi.setupUi(this);
    mColor = Qt::red;
}
 
void MyWindow1::setTimer(int ms)
{
    if (!mUi.pushButton_114)
        printf("setTimer: invalid button\n");
 
    QTimer *timer = new QTimer(this);
    connect(timer, SIGNAL(timeout()), this, SLOT(blink()));
    timer->start(ms);
}
 
void MyWindow1::blink()
{
    if (!mUi.pushButton_114)
    {
        printf("Invalid button\n");
        return;
    }
 
    if (mColor == Qt::green)
        mColor = Qt::red;
    else
        mColor = Qt::green;
 
    // DOES NOT WORK
    QPalette p = mUi.pushButton_114->palette();
    p.setColor(QPalette::Button, mColor);
    mUi.pushButton_114->setPalette(p);
    mUi.pushButton_114->setAutoFillBackground(true);    
 
#if 0   
    // THIS WORKS
    QString style = mUi.pushButton_114->styleSheet();
    if (style.contains("green"))
    {   
        mUi.pushButton_114->setStyleSheet(
                QString::fromUtf8("background-color: red;"));
    }
    else
    {
        mUi.pushButton_114->setStyleSheet(
                QString::fromUtf8("background-color: green;"));
    }
#endif
}

#include <QPalette>
#include <QIcon>
#include <QtCore/QTimer>
#include "mywindow.h"

MyWindow1::MyWindow1(const Ui::Form& ui) : QMainWindow()
{
    mUi = ui;
    mUi.setupUi(this);
    mColor = Qt::red;
}

void MyWindow1::setTimer(int ms)
{
    if (!mUi.pushButton_114)
        printf("setTimer: invalid button\n");

    QTimer *timer = new QTimer(this);
    connect(timer, SIGNAL(timeout()), this, SLOT(blink()));
    timer->start(ms);
}

void MyWindow1::blink()
{
    if (!mUi.pushButton_114)
    {
        printf("Invalid button\n");
        return;
    }

    if (mColor == Qt::green)
        mColor = Qt::red;
    else
        mColor = Qt::green;
  
    // DOES NOT WORK
    QPalette p = mUi.pushButton_114->palette();
    p.setColor(QPalette::Button, mColor);
    mUi.pushButton_114->setPalette(p);
    mUi.pushButton_114->setAutoFillBackground(true);    
        
#if 0   
    // THIS WORKS
    QString style = mUi.pushButton_114->styleSheet();
    if (style.contains("green"))
    {   
        mUi.pushButton_114->setStyleSheet(
                QString::fromUtf8("background-color: red;"));
    }
    else
    {
        mUi.pushButton_114->setStyleSheet(
                QString::fromUtf8("background-color: green;"));
    }
#endif
}

To copy to clipboard, switch view to plain text mode 

main.cpp

#include <QApplication>
#include "mywindow.h"
 
int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    Ui::Form ui; 
    MyWindow1 *widget = new MyWindow1(ui);
    widget->setTimer(500);
    widget->show();
    return app.exec();
}

#include <QApplication>
#include "mywindow.h"

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    Ui::Form ui; 
    MyWindow1 *widget = new MyWindow1(ui);
    widget->setTimer(500);
    widget->show();
    return app.exec();
}

To copy to clipboard, switch view to plain text mode