1、Lesson content:GUI Application OverviewData TargetsUsing Keywords and Targets with WidgetsLesson 7: Commands and Keywords (Part 2)30 minutesGUI Application OverviewMenus/IconsProvide the user with access to functionalityModesResponsible for gathering user input, processing commandsFormsProceduresFor

2、ms are “standalone”, procedures use promptsDialogsPrompt line, dialogs, viewportInput mechanismsLayout ManagersControl widget layoutWidgetsGUI controls (buttons, text fields, lists, etc.)GUI Commands & KeywordsProvide an interface between application data and the user interfaceData Targets (1/8)Reca

3、ll that data targets can operate in two modes, value and optionOption mode:Specified by using a message ID zero Data target responds by issuing the sender an ID_CHECK message if the senders ID matches the targets value; otherwise an ID_UNCHECK message is sent to the senderBy connecting multiple radi

4、o buttons (with different IDs) to the same target, the “one of many” selection is automatically enforced(as in the next example)Data Targets (2/8)Radio button exampleLets say that a data target, dt, has a value of 2Radio button 1 is given an ID = 1, and a target = dtRadio button 2 is given an ID = 2

5、, and a target = dtRadio button 3 is given an ID = 3, and a target = dtFXRadioButton(p, Button 1, dt, 1)FXRadioButton(p, Button 2, dt, 2)FXRadioButton(p, Button 3, dt, 3)Data Targets (3/8)Radio button exampleInitially, none of the buttons are checkedButton 1Button 2Button 3Data Targets (4/8)Radio bu

6、tton exampleDuring the GUI update process, Button 1 sends its target an update messageSince the ID of Button 1 does not match the data targets value, the data target sends the button an ID_UNCHECK messageID=1, SEL_UPDATEID_UNCHECK, MAND Data Targetvalue = 2Button 1Button 2Button 3Data Targets (5/8)R

7、adio button exampleNext in the GUI update process, Button 2 sends its target an update messageSince the ID of Button 2 does match the data targets value, the data target sends the button an ID_CHECK messageID=2, SEL_UPDATEID_CHECK, MANDButton 1Button 2Button 3 Data Targetvalue = 2Data Targets (6/8)R

8、adio button exampleNext in the GUI update process, Button 3 sends its target an update messageSince the ID of Button 3 does not match the data targets value, the data target sends the button an ID_UNCHECK messageButton 1Button 2Button 3 Data Targetvalue = 2ID=3, SEL_UPDATEID_UNCHECK, MANDData Target

9、s (7/8)Radio button exampleNow, if the user clicks on Button 1 it will send its target an command messageThe target responds by setting its value to 1ID=1, MAND Data Targetvalue = 1Button 1Button 2Button 3Data Targets (8/8)Radio button exampleThe GUI initiates another round of updating, and this tim

10、e Button 1 will receive an ID_CHECK message, and Button 2 and Button 3 will receive ID_UNCHECK messagesButton 1Button 2Button 3Using Keywords and Targets with Widgets (1/2)Symbolic constants Symbolic constants for kernel commands are all available in the top-level kernel name spaceThe same symbolic

11、constants are also available in the GUIGUI updating uses integer message IDs, but Abaqus/CAE often uses symbolic constants in its commands (for example renderStyle=WIREFRAME)Special symbolic constants have been created for the GUI process that have a string representation and a unique integer IDUse

12、of the ID allows AFXSymConstKeywords to be used with GUI updatingUse the getId() method of symbolic constants to obtain their IDUsing Keywords and Targets with Widgets (2/2)The widgets ID (selector) depends upon the type of keyword or target it is connected to:For int, float, string, and bool types,

13、 use a value of 0 (the default)For symbolic constant or int types:When connected to a list or combo box, use 0 When connected to a radio button, use the value of anappropriate symbolic constants ID (accessible via thegetId method)For tuple keywords:Use a value of zero when addressing the entire tupleUse the element number (1-based) when addressing a single element of the tuplecombo = boBox(hf, 8, 4,