Matlab_GUI study notes (3) - Figure of the properties of common objects

Matlab_GUI study notes (3) - Figure of the properties of common objects

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1. Figure

Use the get function to easily view the properties of each object. Some properties can be roughly judged by their names. For example, the property of Figure is the CloseRequestFcnfunction to be called when the form is closed; CurrentCharacterthe property is the current character, that is, if the form can In response to keyboard events, use this property to get which key we pressed.

>>get(figure)
                 Alphamap: [1×64 double]
             BeingDeleted: 'off'
               BusyAction: 'queue'
            ButtonDownFcn: ''
                 Children: [0×0 GraphicsPlaceholder]
                 Clipping: 'on'
          CloseRequestFcn: 'closereq'
                    Color: [0.9400 0.9400 0.9400]
                 Colormap: [64×3 double]
                CreateFcn: ''
              CurrentAxes: [0×0 GraphicsPlaceholder]
         CurrentCharacter: ''
            CurrentObject: [0×0 GraphicsPlaceholder]
             CurrentPoint: [0 0]
                DeleteFcn: ''
             DockControls: 'on'
                 FileName: ''
        GraphicsSmoothing: 'on'
         HandleVisibility: 'on'
            InnerPosition: [488 342 560 420]
            IntegerHandle: 'on'
            Interruptible: 'on'
           InvertHardcopy: 'on'
              KeyPressFcn: ''
            KeyReleaseFcn: ''
                  MenuBar: 'figure'
                     Name: ''
                 NextPlot: 'add'
                   Number: 2
              NumberTitle: 'on'
            OuterPosition: [481 334.6000 574.4000 457.6000]
         PaperOrientation: 'portrait'
            PaperPosition: [3.0917 9.2937 14.8167 11.1125]
        PaperPositionMode: 'auto'
                PaperSize: [21.0000 29.7000]
                PaperType: 'A4'
               PaperUnits: 'centimeters'
                   Parent: [1×1 Root]
                  Pointer: 'arrow'
        PointerShapeCData: [16×16 double]
      PointerShapeHotSpot: [1 1]
                 Position: [488 342 560 420]
                 Renderer: 'opengl'
             RendererMode: 'auto'
                   Resize: 'on'
               Scrollable: 'off'
            SelectionType: 'normal'
           SizeChangedFcn: ''
                      Tag: ''
                  ToolBar: 'auto'
                     Type: 'figure'
            UIContextMenu: [0×0 GraphicsPlaceholder]
                    Units: 'pixels'
                 UserData: []
                  Visible: 'on'
      WindowButtonDownFcn: ''
    WindowButtonMotionFcn: ''
        WindowButtonUpFcn: ''
        WindowKeyPressFcn: ''
      WindowKeyReleaseFcn: ''
     WindowScrollWheelFcn: ''
              WindowState: 'normal'
              WindowStyle: 'normal'

• As can be seen from the above get results, CloseRequestFcn directly points to the function, that is, the form can be closed by calling this function. Next, we create a button in the figure to achieve this function.
  CloRequestFcnclosereq

  hf = figure;
  hb = uicontrol('Style', 'pushbutton', 'Callback', 'closereq');
  

• The color attribute of the Color
  form can be controlled to change the color of the form, and the parameter can be a character or an RGB value.

  set(hf, 'Color', 'w')			%将颜色设置为白色
  

• CurrentAxes If a child object
  is added in the form , it points to the handle of the current coordinate axis object.AxesCurrentAxes

• CurrentCharacter
  If the form can respond to keyboard events, it CurrentCharacterpoints to the current key value.

• If CurrentObject puts a curve in it, it points to the current curve object.
  CurrentAxesCurrentObject

• CurrentPoint
  CurrentPoint is the current pointing position of the mouse.

• Menubar
  Menubar is the menu bar of the form. The default is, figurethat is, our common default menu bar. If the window you create does not want this column, you can modify its properties through the set function.

  set(hf, 'Menubar', 'none');
  

• Name&NumberTitle
  Name and NumberTitlecan be used together to name the form. As default is set to Figure 1.

  set(hf, 'NumberTitle', 'off', 'Name', 'Instance' );
  

• Nextplot
  Nextplot indicates whether to overwrite the original image and redraw it next time, or to add it directly on the original basis.

• Position&Units
  Position is Unitsused in conjunction with general. If the unit is set to normalization, then the position parameter is set between 0-1, that is, the relative position is taken, and a relatively uniform layout can be obtained on screens with different resolutions.

  set(hf, 'Units', 'Normalized', 'Position', '[0.2,0.2,0.6,0.8]);
  

• Resize,
  as the name Resizesuggests, indicates whether the form can be resized again by clicking and dragging the mouse. With the property set to off, the form can no longer be resized.

  set(hf, 'Resize', 'off');
  

• The callback functions starting with Window…(series) have similar basic functions. The following uses the combined functions as an example to illustrate how to use them:
  WindowWindowButtonDownFcnWindowKeyPressFcnclosereq

  set(hf, 'WindowButtonDownFcn', 'closereq');
  set(hf, 'WindowKeyPressFcn', 'closereq');
  

  Clicking anywhere on the form with the mouse or pressing any key on the keyboard will close the form.

• WindowStyle
  sets the window mode, which can be set to dialog mode, that is, the window cannot be closed by clicking any irrelevant position on the screen.

  set(hf, 'WindowStyle', 'modal');
  

• Whether the Visible
  form is visible or not is used in some programs that call multiple sub-windows to avoid opening and displaying many windows at one time.

  pause(3)
  set(hf, 'Visable', 'off')
  pause(3)
  set(hf, 'Visable', 'on')