Modal and modeless windows in oracle forms

Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. Notify me of follow-up comments by email. Notify me of new posts by email. You are using an outdated browser that may not be compatible with this website. These icons are defined by the MessageBoxIcon enumeration. As an example, one use of such message box can be in closing an application.

If the user cancels the closing of the the main application, then you should set the Cancel property of the form to true to avoid terminating the application. Example: Add a closing event handler to the Form1 in the above application. Write the following code in it. CancelEventArgs e. Show "OK to quit", "terminate? Question ;. Now when you try to x out the application, you will get the above confirmation dialog. If you choose cancel, the program will not terminate. Common Dialogs:.

TextBox txtUsername; …. Text; this. Show "Correct login" ; else MessageBox. Modeless Forms: Modeless forms coexist with the parent application.

Passing Parent Form to the Child Form: Another way to design the above modeless example would be to pass the entire parent form Form1in above example to the constructor in the child form MsgDlg. It should function as before. MessageBox as a Modal Dialog and Closing Event : In addition to displaying messages to the user in a modal manner, a MessageBox can be used to collect simple information from the user.

Cancel e. All controls are inherited from the Control class. The same applies to the form. When you click button1 Show Modeless Form , a window of a non-modal form opens and the text from the input field of the main form Form1. Text is entered in the input field of a non-modal form Form2. To complete this step, you first need to activate Form1. Then you need to program the Click event of the button1 control placed on Form1. When you click button1 Copy to Form1 , the text from the input field of a modeless form Form2.

Text should be copied to the corresponding input field of the main form Form1. First you need to activate the form Form2 and create a handler for the Click event of the button1 control. In the event handler based on the static reference form1 , a control element of the TextBox type with the name textBox1 is called cyclically just in case there are several textBox-es in the main form.

When you click button2 , you need to close the modeless form. The text of the corresponding handler is as follows:. After completing the instructions, you can run the program. In this case, from secondary modeless forms, information can be transferred to the main program one by one. Figure 3.

The case when 4 modeless forms are called from the main form. An example of creating a modeless form in a Windows Forms application. Modal and modeless windows Contents 1. General information about modal and non-modal forms 2. Features of working with modeless windows in Windows Forms 3. Information exchange methods between the main form and the modeless form 4. An example of developing a demo program using a modeless form 4. Create a project of Windows Forms type 4.