Addind Widgets

[nighil]

Curently doing main project in linux.After creating GUI now when a new widget is added, while running
it is not seen.Also when i checked the corresponding .h file . there the corresponding code was also absent

[wysota]

How are you adding the new widget?

[nighil]

i tried to add widgets in Qt in the existing project by just dragging and dropping.It appearis in the UI,but after building and running i cannot see my new widget added

[aamer4yu]

Did you save the ui file ?
Also run qmake again and see if it appears

[nighil]

yes i saved the ui file.In the ui_mainwindow.h file added widget's code is present. Tried run qmake but still cannot solve the problem

[tbscope]

Can you post the code or a minimal compilable example that demonstrates the problem?

[nighil]

#ifndef UI_MAINWINDOW_H
#define UI_MAINWINDOW_H


//Push button_6 and push button_7 does not appear in the gui when i run the project.but it s n the file



#include <QtCore/QVariant>
#include <QtGui/QAction>
#include <QtGui/QApplication>
#include <QtGui/QButtonGroup>
#include <QtGui/QHeaderView>
#include <QtGui/QMainWindow>
#include <QtGui/QMenu>
#include <QtGui/QMenuBar>
#include <QtGui/QPushButton>
#include <QtGui/QStatusBar>
#include <QtGui/QToolBar>
#include <QtGui/QWidget>

QT_BEGIN_NAMESPACE

class Ui_MainWindow
{
public:
QWidget *centralWidget;
QPushButton *pushButton;
QPushButton *pushButton_2;
QPushButton *pushButton_3;
QPushButton *pushButton_4;
QPushButton *pushButton_5;
QPushButton *pushButton_6;
QPushButton *pushButton_7;
QMenuBar *menuBar;
QMenu *menuCONTROL_CENTER;
QToolBar *mainToolBar;
QStatusBar *statusBar;

void setupUi(QMainWindow *MainWindow)
{
if (MainWindow->objectName().isEmpty())
MainWindow->setObjectName(QString::fromUtf8("MainWindow"));
MainWindow->resize(600, 347);
centralWidget = new QWidget(MainWindow);
centralWidget->setObjectName(QString::fromUtf8("centralWidget"));
pushButton = new QPushButton(centralWidget);
pushButton->setObjectName(QString::fromUtf8("pushButton"));
pushButton->setGeometry(QRect(50, 50, 171, 41));
pushButton_2 = new QPushButton(centralWidget);
pushButton_2->setObjectName(QString::fromUtf8("pushButton_2"));
pushButton_2->setGeometry(QRect(360, 50, 171, 41));
pushButton_3 = new QPushButton(centralWidget);
pushButton_3->setObjectName(QString::fromUtf8("pushButton_3"));
pushButton_3->setGeometry(QRect(50, 180, 171, 41));
pushButton_4 = new QPushButton(centralWidget);
pushButton_4->setObjectName(QString::fromUtf8("pushButton_4"));
pushButton_4->setGeometry(QRect(360, 180, 171, 41));
pushButton_5 = new QPushButton(centralWidget);
pushButton_5->setObjectName(QString::fromUtf8("pushButton_5"));
pushButton_5->setGeometry(QRect(240, 250, 91, 27));
pushButton_6 = new QPushButton(centralWidget);
pushButton_6->setObjectName(QString::fromUtf8("pushButton_6"));
pushButton_6->setGeometry(QRect(200, 130, 96, 27));
pushButton_7 = new QPushButton(centralWidget);
pushButton_7->setObjectName(QString::fromUtf8("pushButton_7"));
pushButton_7->setGeometry(QRect(370, 130, 96, 27));
MainWindow->setCentralWidget(centralWidget);
menuBar = new QMenuBar(MainWindow);
menuBar->setObjectName(QString::fromUtf8("menuBar"));
menuBar->setGeometry(QRect(0, 0, 600, 27));
menuCONTROL_CENTER = new QMenu(menuBar);
menuCONTROL_CENTER->setObjectName(QString::fromUtf8("menuCONTROL_CENTER"));
MainWindow->setMenuBar(menuBar);
mainToolBar = new QToolBar(MainWindow);
mainToolBar->setObjectName(QString::fromUtf8("mainToolBar"));
MainWindow->addToolBar(Qt::TopToolBarArea, mainToolBar);
statusBar = new QStatusBar(MainWindow);
statusBar->setObjectName(QString::fromUtf8("statusBar"));
MainWindow->setStatusBar(statusBar);

menuBar->addAction(menuCONTROL_CENTER->menuAction());

retranslateUi(MainWindow);
QObject::connect(pushButton, SIGNAL(clicked()), MainWindow, SLOT(update()));
QObject::connect(pushButton_5, SIGNAL(clicked()), MainWindow, SLOT(close()));
QObject::connect(pushButton_2, SIGNAL(clicked()), MainWindow, SLOT(update()));

QMetaObject::connectSlotsByName(MainWindow);
} // setupUi

void retranslateUi(QMainWindow *MainWindow)
{
MainWindow->setWindowTitle(QApplication::translate("MainWindow", "MainWindow", 0, QApplication::UnicodeUTF8));
pushButton->setText(QApplication::translate("MainWindow", "Date and Time", 0, QApplication::UnicodeUTF8));
pushButton_2->setText(QApplication::translate("MainWindow", "Display Settings", 0, QApplication::UnicodeUTF8));
pushButton_3->setText(QApplication::translate("MainWindow", "Networking", 0, QApplication::UnicodeUTF8));
pushButton_4->setText(QApplication::translate("MainWindow", "User Accounts", 0, QApplication::UnicodeUTF8));
pushButton_5->setText(QApplication::translate("MainWindow", "Cancel", 0, QApplication::UnicodeUTF8));
pushButton_6->setText(QApplication::translate("MainWindow", "PushButton", 0, QApplication::UnicodeUTF8));
pushButton_7->setText(QApplication::translate("MainWindow", "PushButton", 0, QApplication::UnicodeUTF8));
menuCONTROL_CENTER->setTitle(QApplication::translate("MainWindow", "CONTROL CENTER", 0, QApplication::UnicodeUTF8));
} // retranslateUi

};

namespace Ui {
class MainWindow: public Ui_MainWindow {};
} // namespace Ui

QT_END_NAMESPACE

#endif // UI_MAINWINDOW_H

[bothorsen]

When adding a widget to a window/widget that is already shown, you have to call setVisible() yourself.

[Lykurg]

I can't see that you are using layouts. Resize you window and see if the button are really not there or even better use layouts. And make sure the files get really recompiled.

[nighil]

How should i use setvisible().When i just drag and drop it appears when i run i cannnot see the buttom.Also in my system in the ui_mainwindow.h header file it s not listed.But in my friends system it is listed in the header file,but still it does not appear while running

Added after 29 minutes:

void MainWindow::on_pushButton_6_clicked()
{
ui->pushButton_6->setVisible(true);
}
//I tried using this code.Is this enough.
Still i cant solve the problem

[wysota]

Please just use layouts.

[nighil]

i tried but it it is not working but the same Qt project when i added a widget in Qt installed in windows it worked

[wysota]

You are probably not rebuilding the whole project. Anyway, use layouts regardless of everything.