What?s the difference between Modal and Modeless Dialog?
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Answer Posted / mahesh vanama
You create a modal dialog box by using the DialogBox function. You must specify the identifier or name of a dialog box template resource and a pointer to the dialog box procedure. The DialogBox function loads the template, displays the dialog box, and processes all user input until the user closes the dialog box.
In the following example, the application displays a modal dialog box when the user clicks Delete Item from an application menu. The dialog box contains an edit control (in which the user enters the name of an item) and OK and Cancel buttons. The control identifiers for these controls are ID_ITEMNAME, IDOK, and IDCANCEL, respectively.
Creating a Modeless Dialog Box
You create a modeless dialog box by using the CreateDialog function, specifying the identifier or name of a dialog box template resource and a pointer to the dialog box procedure. CreateDialog loads the template, creates the dialog box, and optionally displays it. Your application is responsible for retrieving and dispatching user input messages to the dialog box procedure.
In the following example, the application displays a modeless dialog box — if it is not already displayed — when the user clicks Go To from an application menu. The dialog box contains an edit control, a check box, and OK and Cancel buttons. The dialog box template is a resource in the application's executable file and has the resource identifier DLG_GOTO. The user enters a line number in the edit control and checks the check box to specify that the line number is relative to the current line. The control identifiers are ID_LINE, ID_ABSREL, IDOK, and IDCANCEL
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