closing child dialog closes parent dialog

i have a QDialog, frmLogin, which allows a user to well, login

Code:

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//frmLogin declaration
class frmLogin : public QDialog
 
//frmLogin constructor
frmLogin::frmLogin(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::frmLogin)
//button clicked slot that closes frmLogin
void frmLogin::on_btn_Close_clicked(){
    this->close();
    this->changedUser  = false;//user not changed
}

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the dialog is created when the user clicks the login button on its parent component, frmWeapon

Code:

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//frmWeapon declaration
class frmWeapon : public QDialog 
//frmWeapon constructor
frmWeapon::frmWeapon(QWidget *parent, QString user, int uID)
    : QDialog(parent), ui(new Ui::frmWeapon), curUser(user), userID(uID)
 
//button clicked slot that shows frmLogin
void frmWeapon::on_btn_Login_clicked(){
    frmLogin l(this);
//hide frmWeapon object for appearance reasons
    this->setVisible(false);
//show frmLogin
    l.exec();
 
    if(l.userChanged()){//login sucessful user changed
        this->userID = l.userID();
        this->curUser = l.user();
        this->setWindowTitle("Weapon Workbench - "+ curUser );
 
        //load new users weapon and projectile data
 
        //frist remove all old configs
 
        do{//remove old weapons
            ui->cbo_Weapon->removeItem(1);
        }while(ui->cbo_Weapon->count()  != 1);
        do{//remove old projectiles
            ui->cbo_Proj->removeItem(1);
        }while(ui->cbo_Proj->count() != 1);
 
        //now add new configs
        this->populateWpnConfig();
        this->populateProjConfig();
 
    }
//reshow frmWeapon
this->setVisible(true);
 
}

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currently when i click on the close button for frmLogin it closes its parent frmWeapon, and returns control to frmWeapon s parent which is frmHangar,closing frmWeapon which i dont want to happne, frmHangar is also a QDialog and it is created by my main fucntion. any thoughts?

also in an unreleated question, i was looking at the code for the above dialogs which was generated by QDesigner, and i noticed in the setupUi() function, all the widgets for the form were created with "new", but i found no corresponding "delete", so should i add the "delete" for each componet to prevent memory leaks or should i just leave it as is?

Quote:

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currently when i click on the close button for frmLogin it closes its parent frmWeapon

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I don't see anything in the code you posted that should make it behave like that.
My guess is that the weapon dialog is not closed, just hiden.
Comment out :

Code:

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this->setVisible(false);

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And see if frmWeapon gets closed when you dismiss the login dialog.

thanks that fixed it.

EDIT: ok now i see why that happened, since the parent of frmLogin wasnt visible QT automatically closed all hidden windows that it relied on , returning to frmHangar, the main widget of the program