Have Form, now what?
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I doing my very 1st QT project. I started the project as a QT Widgets application. After adding a few widgets to the form, I decided to add another form to use as a non-modal dialog. Now I want to use a button from the starting form to open the 2nd (non-modal dialog). (C code for the original form was created when the project began, and I've got a 'clicked' slot function setup for my button). My question is: How is the class for the 2nd form created, and/or how do I get the 2nd form and the code for it to be associated? (I know this is QT-101, but its surprisingly not obvious...
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For anybody trying to add a 2nd dialog, the solution that worked for me was to do the following from inside QT Creator:
- Open or create the project
- Right click on the project (top line in 'Projects' view)
- Select 'Add New...'
- In the 'New File' dialog, Choose Qt -> QT Designer Form Class. This will generate ( *.ui, *.h, and *.cpp) for the new form.
- From there you open your mainwindow ui, and select the button you want to open the modal dialog and right click on 'Goto slot'.
- Select the 'clicked' slot, and this will add a 'clicked' function to your mainwindow code. Then startup the new modal dialog by editing the button 'clicked' function as follows:
@
void MainWindow::on_Button_clicked()
{
NewDlg *Dlg = new NewDlg;
Dlg->show();
}
@[edit: Added missing coding tags @ SGaist]
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Hi and welcome to devnet,
It's the right technique. However you have now a memory leak with your dialog
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Thanks for the tip. I'll change the code to make NewDlg a member variable of MainWindow, and then have the WinWindow destructor delete the pointer. (I guess another way would be to have the dialog delete its own space in its destructor?
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It depends on how you use your dialog. Is it meant to stay ? Or does the user just answer a question and close it ?
