HP 3000 Manuals HP 3000 Manuals
Defining Function Keys The keys you will define in this lesson are two sets of terminal function keys: the product_keys function keys, which are attached to the prod_wnd window, and the option_keys function keys, which are attached to the option and new_option windows. These sets of keys both display a function key that allows the user to scroll the options for the current product. The product_keys key set also has a key that allows the user to select option updating. The option_keys function key set has a key that allows the user to return to product updating. Each function key calls a function to perform the action. Menu Path To access the Function Key Screen: 1. From the main menu, select the Screens option. 2. Choose Function Keys. Screen Description This screen allows you to define the actions, labels, and associated switches for a set of function keys.Function Keys Screen To enter the field values: Field Entry Explanation --------------------------------------------------------------------------------------- Function Keys product_keys This is the name of the function key set within the application. When you press Return, HP ALLBASE/4GL supplies a default set of function key definitions. These default definitions satisfy the basic needs of all screens. You can create your own default set of keys by defining a function key set called default_keys in your application. Refer to the HP ALLBASE/4GL Developer Reference Manual for more information. The rest of the screen is divided into eight rows, each containing four fields. There is one row for each key. The function key number is displayed to the left of these fields. The following steps show you how to define function key number 1. To define function key f1: Field Entry Explanation --------------------------------------------------------------------------------------- Action F-option This is the action that HP ALLBASE/4GL performs when the user presses function key f1. The first character is the action type. In this case F indicates a function. When the user presses the key, the function option is executed. The HP ALLBASE/4GL Developer Reference Manual contains a list of the actions that can be called from function keys, and the prefixes for these actions. Label Text Line 1 Options This is the first line of the function key label that appears on the screen. Try to center the word in the field on the screen. Label Text Line 2 Leave this field This is the second line of the function key blank. label that appears on the screen. Switch Number Leave this field This field is used to associate a user blank. switch with a function key. If you enter a number in this field, an asterisk appears at the end of the first line of the label text on the screen. When the function key set is displayed on an application screen, the asterisk shows the status of the switch. When user switch 1 is on, the asterisk appears. When the switch is off, the asterisk is cleared. Typically you would use this feature to show the end user the status of a function. For example, you could use a function associated with the function key to toggle a particular operating mode. To complete the screen: 1. Define the next function key as shown below. Function Key f4 Action F-scroll_options Label Text Line 1 Scroll Label Text Line 2 Options 2. Leave the default definitions for the remaining keys. 3. Press Commit Data to create this function key set. Defining a Second Function Key Set 1. Now create the option_keys function key set in a similar way, using the following information. Function Key Set Name option_keys a. Function Key 1 Action F-product Label Text Line 1 Products b. Function Key f4 Action F-scroll_options Label Text Line 1 Scroll Label Text Line 2 Options 2. Leave the default definitions for the remaining keys. 3. Press Commit Data to create this function key set.
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