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13 Manage Application-Defined Data
GUI Data
Most GUIs generate or use data that is specific to the application. These
mechanisms provide a way for applications to save and re triev e data stored
with the GUI. With GUI data:
• You can access the data from within a callback routine using the
component’s handle, without needing to find the figure handle.
• Youdonotneedtocreateandmaintainahard-codednameforthedata
throughout your source code.
Use the
guidata function to manage GUI data. This function can store a
single variable as GUI data. GUI data differs from application data in that
• GUI d ata is a single variable; how ever, when defined as a structure, you
can add and remove fields.
• Application data can consist of many variables, each stored under a
separate unique name.
• You access GUI data using the
guidata function, which both stores and
retrieves GUI data.
• Whenever you use
guidata to store GUI data, it overwrites the existing
GUI data.
• Using the
getappdata, setappdata,andrmappdata functionsdoesnot
affect GUI data.
GUIdataisalwaysassociatedwiththeGUIfigure. Itisavailabletoall
callbacks of all components of the GUI. If you specify a component handle
whenyousaveorretrieveGUIdata,MATLABsoftwareautomatically
associates the data with the component’s parent figure.
GUI data can contain only one variable at any time. W riting GUI data with
a different variable overwrites the existing GUI data. For this reason, GUI
data is usually defined to be a structure to which you can add fields as you
need them.
You can access the data from w ithin a callback routine using the component’s
handle, without having to find the figure handle. If you specify a
component’s callback properties as function handles, the component handle is
13-8
- Creating Graphic 1
- 508-647-7000 (Phone) 2
- 508-647-7001 (Fax) 2
- The MathWorks, Inc 2
- 3 Apple Hill Drive 2
- Natick, MA 01760-2098 2
- Revision History 3
- Create GUIs with GUIDE 7
- Save and Run a GUIDE GUI 9
- Examples of GUIDE GUIs 11
- Create GUIs Programmatically 13
- Code a Programmatic GUI 14
- Manage Callback Execution 15
- Examples 17
- Contents 18
- Introduction to Creating GUIs 19
- About GUIs in MATLAB 21
- Software 21
- What Is a GUI? 22
- How Does a GUI Work? 24
- 'c = 24
- 'print') 24
- Where Do I Start? 26
- Ways to Build MATLAB GUIs 28
- Ways to Build MATLAB 29
- 1 About GUIs in MATLAB 30
- How to Create a G UI with 31
- Introduction to GUIDE 32
- Getting Help in GUIDE 34
- Laying Out a GUIDE GUI 37
- Programming a GUIDE GUI 38
- Simple GUIDE GUI Components 39
- Add Components t 45
- Align the Components 46
- Add Text to the Components 48
- String.TheString 51
- Select Data 52
- Strin g. In the String 52
- Save the GUI Layout 55
- .m, contains MATLAB functions 55
- Program the Simple GUIDE GUI 58
- The curs 59
- % uiwait(handles.f igure1); 60
- Program the Pop-Up Menu 61
- % handles 62
- Program the Push Buttons 63
- UsetheCompletedSimpleGUIDEGUI 66
- How to Create a Simple 69
- GUI Programmatically 69
- CodetheSimpleProgrammaticGUI 81
- Open and Run the GUI 88
- What Is GUIDE? 93
- GUIDE: Getting Started 94
- GUIDE Tools Summar y 95
- 4 What Is GUIDE? 96
- GUIDE Tools Summary 97
- GUIDE Preferences and 99
- GUIDE Preferences 100
- GUIDE in the 101
- Prompt to Save on Export 102
- All Other Preferences 104
- .fig ,intheLayout 105
- GUIDE Preferences and Options 106
- GUI Options 107
- ResizeFcn 108
- Command-Line Accessibility 109
- Ha ndle Visibility and 110
- OpeningFcn, which can 111
- Generate FIG-File Only 112
- Callbac k property of 114
- Lay Out a GUIDE GUI 115
- Design a GUI 116
- Design a G UI 117
- Star t GUIDE 118
- Start GUIDE 119
- Select a GUI Template 120
- Template Descriptions 121
- 6 Lay Out a GUIDE GUI 122
- GUI with Uicontrols 123
- Modal Question Dialog 127
- WindowStyle property 128
- Set the GUI Size 129
- Click and drag 129
- Add Components to the GUI 133
- Highlight 149
- Commonly Used Properties 153
- Radio Button 157
- Check Box 159
- String property to 166
- Position 171
- My Panel 173
- \remove yields remove 173
- Title property to the desired 174
- My Button Group 174
- NextPlot property has its 180
- Creating a Table 181
- ColumnEditable 185
- RowName, Show 188
- Add ActiveX Controls 191
- Locate and Move Components 197
- Align Components 203
- Align Options 205
- BackgroundColor 207
- Extent,andPosition 207
- Creating Guide Lines 211
- Set Tab Order 212
- Create Menus in a GUIDE GUI 215
- Untitled,appears 223
- Edit drop-down menu 225
- Copy is a cascading menu 226
- Menu button from the toolbar 229
- UIC ontextMenu property to 234
- Tag property axes1 234
- Create Toolbars 236
- Predefined and Custom Tools 241
- Move Tools 243
- Remove Tools 243
- Edit a Tool’s Properties 243
- EditingToolIcons 245
- Use the I con Editor 247
- View the Object Hierarchy 250
- Default System Font 251
- FixedWidthFontName property 252
- Units of pixels does not 253
- Save and Run a GUIDE 255
- NameaGUIandItsFiles 256
- File and GUI Names 257
- Rename GUIs and GUI Files 257
- Save a GUIDE GUI 258
- Save a New GUI 259
- 7 Save and Run a GUIDE GUI 260
- Tag properties do not 261
- UserData) 263
- Run a GUIDE GUI 264
- From the Command Line 265
- From Any MATLAB Code File 265
- Programming a GUIDE 269
- 8 Programming a GUIDE GUI 270
- Files Generated by GUIDE 275
- Adding Callback 277
- Tag,GUIDErenamesallits 278
- Tag property 280
- GUIDE Callback Templates 283
- Callback Function Signatures 285
- GUIDE-generated callbacks 287
- Initialize a GUIDE GUI 293
- Function Naming and Template 297
- Input Arguments 297
- Output Arguments 297
- Toggle Button 299
- Edit Text 301
- CellEditCallback 303
- Cell Sele ctionCallback 303
- Pop-Up Menu 305
- Programming a Button Group 311
- Callback 313
- Creating Subplots 315
- ActiveX Control 317
- Mwsamp_activex1 in your 319
- 5 View the Ac 321
- Menu Item 327
- Updating a Menu Item Check 329
- Managing and Sharing 331
- Application Data in GUIDE 331
- Nested Functions 334
- UserData Property 335
- Application Data 335
- GUI Data 337
- GUI Data in GUIDE 338
- Introduction 340
- Sharing Data with UserData 341
- Sharing Data with GUI Data 347
- Data-Sharing Techniques 351
- User Input 352
- Applying the Text Change 359
- Closing the Main GUI 359
- Icon Manipulation Tools 360
- Icon Editor Implementation 363
- • guid e_co lorpalette.m 364
- • guid e_to olPalatte.m 364
- % Update handles structure 367
- 10 Examples of GUIDE GUIs 376
- Calculate Data 383
- Plot Data 383
- Designthe3-DGlobeGUI 391
- Make a Movie of the Animation 397
- Create the Graphic Objects 399
- Visible property 401
- Further Graphic 403
- Explorations 403
- About the tablestat Example 405
- Design the tablestat GUI 409
- Tag properties (which are 410
- Compute the Data Statistics 415
- View and Run the L 429
- Load the List Box 431
- Read Workspace Variables 437
- A GUI to Set Simulink 441
- Model Parameters (GUIDE) 441
- Kf)intheGainblock 443
- Slider Callback 445
- Remove Results from List Box 449
- Plot Button Callback Listing 451
- GUI Option Settings 457
- Validate the MAT-file 459
- - ThenameoftheMAT-file 460
- - The Address es structure 460
- The Open Menu Callback 461
- Open_Callback Code Listing 461
- Contact Name Callback 463
- Save the Addresses Structure 467
- Save the MAT-File 467
- The Address Book 469
- Resize Function 469
- Close-Confirmation GUIs Work 477
- About the Timer GUI Example 479
- How the GUI Imple 483
- Lay Out a Programmatic 489
- Design a Programmatic GUI 490
- CreateandRunaProgrammaticGUI 492
- Run the GUI 493
- 11 Lay Out a Programmatic GUI 494
- TypesofGUIComponents 497
- Push Button 513
- Arrow button 517
- (minor_step) 517
- (major_step) 517
- Color or 531
- Sketch a Position Vector 537
- UseAlignDistributeTools 545
- HorizontalAlignment 546
- Change the Tab Or 561
- Add Menu Bar Menus 563
- Menu Bar Menu 567
- Position property is 574
- Toolbars 577
- Modify the Standard Toolbar 581
- Compatibility 582
- Standard Background Color 583
- About Some Units Settings 585
- Code a Programmatic G UI 587
- 12 Code a Programmatic GUI 588
- Initialize a Programmatic GUI 589
- MaketheFigureInvisible 591
- Write Code for Callbacks 593
- WriteCodeforCallbacks 595
- Use Function Handle Callbacks 599
- List Box 609
- Resize property to on and 614
- Program Axes 617
- Program Toolbar Tools 623
- Toggle Tool 625
- Application-Defined Data 629
- Create Application Data 635
- Create and Update GUI Data 637
- UserData property to share 639
- Share Data with UserData 643
- Components 644
- Share Data with GUI Data 649
- Manage Ca llback Executio n 654
- Order of Callback Execution 655
- - ButtonDownFc n 656
- - KeyPressFcn 656
- - KeyReleaseFc n 656
- Click a Wait Button 661
- Click a Plot Button 662
- Examples of GUIs Created 665
- Programmatically 665
- The Main Figure 672
- The Axes 673
- The Pop-Up Menu 674
- The Update Push Button 674
- TheFileMenuandItsMenuItems 675
- The Toolbar and Its Tools 676
- Initialize the GUI 677
- Define the Callbacks 678
- Open Menu Item Callback 679
- Print Menu Item Callback 680
- About the tableplot Example 683
- Callback {@plot_callback,3} 686
- The Cell Selection Callback 690
- The Plot Check Box c allback 692
- Col_1, C ol_2 , 695
- YLim property is 696
- AGUIThatManagesListData 697
- The Components 698
- - An “edit panel” containing 699
- UseListMaster 701
- Import Data into List Master 703
- Export Data from List Master 704
- Save the GUI 705
- Program List Master 706
- A GUI That Manages List Data 707
- List Master Setup Functions 708
- List Master Menu Callbacks 709
- List Master List Callbacks 711
- List Master Utility Functions 712
- Color Palette 715
- Use the Color Palette 717
- Techniques Used 719
- View and Ru 719
- Code File Organization 721
- GUI Programming Techniques 722
- Share Data Between Two GUIs 724
- Icon Editor 727
- Icon Editor GUI Components 728
- Subfunction Summary 732
- Code File Organi 734
- Pass Input Arguments to a GUI 736
- Make a GUI Modal 740
- Simple Examples (GUIDE) 746
- “About the S impl 747
- Application Examples (GUIDE) 748
- A Examples 750
- GUI Layout (Programmatic) 751
- UserData property 9-5 13-5 755
- NextPlot 758
- UserData property 759
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