void MainWindow::on_button_graph_clicked() { if(ui->tabWidget->currentIndex() == 0){ dialogWindow = new TeachingGraphDash(this); dialogWindow->showMaximized(); }else if(ui->tabWidget->currentIndex() == 1){ QDialog *pubDash = new publicationGraphDash(this); pubDash->showMaximized(); }else if(ui->tabWidget->currentIndex() == 3){ QDialog *presDash = new PresentationGraphDash(this); presDash->showMaximized(); }else if(ui->tabWidget->currentIndex() == 2){ QDialog *grantsDash = new GrantsFundingGraphDash(this); grantsDash->showMaximized(); } }