help..!!

[rick_st3]

hi..
i wrote a code which would display a dialog box initially and after you press the ok button the main window gets displayed... so in order to link the button clicked signal with show() of the main window,i created a custom signal btnclicked() and defined it as follows:

void dialog::btnclicked()
{
	w1.show();
}

void dialog::btnclicked()
{
	w1.show();
}

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and then i connected the clicked() signal of the button with my custom signal

connect(ok,SIGNAL(clicked()),this,SIGNAL(btnclicked()));

connect(ok,SIGNAL(clicked()),this,SIGNAL(btnclicked()));

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now i am just getting the dialog box and after i click the ok button nothing gets displayed...
Now am i overlooking something...??

[JimDaniel]

btnclicked() in this case would be a SLOT. That's likely your problem.

[rick_st3]

whoops...!! my mistake.... but even i change it to slot,my problem remains the same...!! plz help..!!

[GreyGeek]

Below is main.cpp:

#include <QApplication>
#include "homestead.h"
#include "dlglogin.h"
 
#define DBDRIVER "QPSQL"
#define DBHOST "localhost"
#define DBNAME "hap2008"
 
int main( int argc, char * argv[] ) {
	QString strRejected = "";
	QApplication app(argc, argv);
	app.setQuitOnLastWindowClosed(false);   // may not be needed any more
	dlgLogin dlg;
	if( dlg.exec() == QDialog::Accepted ){
		QSqlDatabase hapdb = QSqlDatabase::addDatabase(DBDRIVER);
		hapdb.setHostName(DBHOST);
		hapdb.setDatabaseName(DBNAME);
		hapdb.setUserName(dlg.dui.leUserName->text());
		hapdb.setPassword(dlg.dui.leUserPassword->text());
		if ( hapdb.open() ) {
			homestead ht;
			ht.RevID = dlg.dui.leUserName->text();
			ht.show();
			app.setQuitOnLastWindowClosed(true);   // may not be needed any more
			return app.exec();
		} else {
			strRejected = QString("Reason: %1").arg(hapdb.lastError().text()).toLatin1();
			QMessageBox::information(0,"Login Rejected!",strRejected,
			QMessageBox::Ok,QMessageBox::NoButton,QMessageBox::NoButton);
			return 1;
		}
	} else {
		strRejected = QString("User Canceled the login!").toLatin1();
		QMessageBox::information(0,"Login Canceled!",strRejected,
		QMessageBox::Ok,QMessageBox::NoButton,QMessageBox::NoButton);
		return 2;
	}
}

#include <QApplication>
#include "homestead.h"
#include "dlglogin.h"

#define DBDRIVER "QPSQL"
#define DBHOST "localhost"
#define DBNAME "hap2008"

int main( int argc, char * argv[] ) {
	QString strRejected = "";
	QApplication app(argc, argv);
	app.setQuitOnLastWindowClosed(false);   // may not be needed any more
	dlgLogin dlg;
	if( dlg.exec() == QDialog::Accepted ){
		QSqlDatabase hapdb = QSqlDatabase::addDatabase(DBDRIVER);
		hapdb.setHostName(DBHOST);
		hapdb.setDatabaseName(DBNAME);
		hapdb.setUserName(dlg.dui.leUserName->text());
		hapdb.setPassword(dlg.dui.leUserPassword->text());
		if ( hapdb.open() ) {
			homestead ht;
			ht.RevID = dlg.dui.leUserName->text();
			ht.show();
			app.setQuitOnLastWindowClosed(true);   // may not be needed any more
			return app.exec();
		} else {
			strRejected = QString("Reason: %1").arg(hapdb.lastError().text()).toLatin1();
			QMessageBox::information(0,"Login Rejected!",strRejected,
			QMessageBox::Ok,QMessageBox::NoButton,QMessageBox::NoButton);
			return 1;
		}
	} else {
		strRejected = QString("User Canceled the login!").toLatin1();
		QMessageBox::information(0,"Login Canceled!",strRejected,
		QMessageBox::Ok,QMessageBox::NoButton,QMessageBox::NoButton);
		return 2;
	}
}

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Below is file dlglogin.h:

#ifndef DLGLOGIN_H
#define DLGLOGIN_H
#include "ui_dlglogin.h"
 
class dlgLogin : public QDialog
{
    Q_OBJECT
 
public:
    Ui::dlgLoginUi dui;
    dlgLogin()
    {
	// Only ID and password required in UI.  No cpp file needed.
        dui.setupUi(this);
	dui.leUserName->setText("");
	dui.leUserPassword->setText("");
        dui.leUserName->setFocus();
	dui.leUserName->selectAll();
    }
};
 
#endif

#ifndef DLGLOGIN_H
#define DLGLOGIN_H
#include "ui_dlglogin.h"

class dlgLogin : public QDialog
{
    Q_OBJECT

public:
    Ui::dlgLoginUi dui;
    dlgLogin()
    {
	// Only ID and password required in UI.  No cpp file needed.
        dui.setupUi(this);
	dui.leUserName->setText("");
	dui.leUserPassword->setText("");
        dui.leUserName->setFocus();
	dui.leUserName->selectAll();
    }
};

#endif

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In dlglogin.ui form file the form object is called "dlgLoginUi" and contains the name and password as textboxes. The cancel button is connected to the reject() function and the OK button is connected to the accept() function.

There is more explainations in the forum tutorial
http://wiki.qtcentre.org/index.php?title=Programming_in_Qt4_and_C%2B%2B

[rick_st3]

now I am not intending to put a login dialog in my code... what i want exactly to do is i want to provide two options in the dialog say two radio buttons...selecting one displays a widget with a particular layout and selecting the other displays a the same widget with a completely different layout,say a with a few more things included for example - a table etc....