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TK之button .

分类： Python/Ruby

2012-11-02 14:06:48

分为三种类型： Button,CheckButton,RadioButton.

 

Button:The -text option lets the user know what the Button is for, and the -command option makes something happen when the user clicks the Button.

 

Checkbuttons:Using -variable gives you an easy way to find out whether the Checkbutton is checked

 

eg:

 

 


Option

Button

Checkbutton

Radiobutton

-activebackground => color Sets the color the background should be when the mouse cursor is over the Button. A color is a text string such as "red" .

Figure 4-1

Figure 4-1

Figure 4-1

-activeforeground => color Sets the color the text should be when the mouse cursor is over the Button.

Figure 4-1

Figure 4-1

Figure 4-1

-anchor => 'n' | 'ne' | 'e' | 'se' | 's' | 'sw' | 'w' | 'nw' | 'center' Causes the text to stick to the specified position in the Button.

Figure 4-1

Figure 4-1

Figure 4-1

-background => color Sets the background of the Button to color .

Figure 4-1

Figure 4-1

Figure 4-1

-bitmap => 'bitmapname' Sets default bitmap or the location of a bitmap file (with @ in front of path). See Chapter 17, "Images and Animations" for more details.

Figure 4-1

Figure 4-1

Figure 4-1

-borderwidth => amount Changes the width of the edge drawn around the Button and the thickness of the indicator. Emphasizes the -relief of the Button.

Figure 4-1

Figure 4-1

Figure 4-1

-command => callback Indicates a pointer to a function that will be called when the Button is pressed.

Figure 4-1

Figure 4-1

Figure 4-1

-cursor => 'cursorname' Indicates that the mouse cursor will change to 'cursorname' when over the Button. See Chapter 23, "Plethora of pTk Potpourri" for details.

Figure 4-1

Figure 4-1

Figure 4-1

-disabledforeground => color Sets the color the text should be when the Button is disabled (-state will be 'disabled' ).

Figure 4-1

Figure 4-1

Figure 4-1

-font => 'fontname' Changes the font of all text on the Button.

Figure 4-1

Figure 4-1

Figure 4-1

-foreground => color Changes the text color to color .

Figure 4-1

Figure 4-1

Figure 4-1

-height => amount Sets the height of the Button in characters if text is displayed and the screen distance if an image or bitmap is displayed.

Figure 4-1

Figure 4-1

Figure 4-1

-highlightbackground => color Sets the color of the area behind the focus rectangle (shows when widget does not have focus).

Figure 4-1

Figure 4-1

Figure 4-1

-highlightcolor => color Sets the color of the focus rectangle (shows when widget has focus).

Figure 4-1

Figure 4-1

Figure 4-1

-highlightthickness => amount Sets the thickness of the highlight rectangle around the Button; indicates focus.

Figure 4-1

Figure 4-1

Figure 4-1

-image => $imgptr $imgptr is a pointer to an Image object made with any supported image format. See Chapter 17, "Images and Animations" for details.

Figure 4-1

Figure 4-1

Figure 4-1

-indicatoron => 0 | 1 Determines whether to display the indicator.  

Figure 4-1

Figure 4-1

-justify => 'left' | 'right' | 'center' Sets the direction against which multiline text will justify.

Figure 4-1

Figure 4-1

Figure 4-1

-offvalue => newvalue Sets the value used when the Button is off. Must be a scalar. Default is 0.  

Figure 4-1

 
-onvalue => newvalue Sets the value used when the Button is on. Must be a scalar. Default is 1.  

Figure 4-1

 
-padx => amount Adds extra space to the left and right side of the Button inside the Button edge.

Figure 4-1

Figure 4-1

Figure 4-1

-pady => amount Adds extra space to the top and bottom of the Button inside the Button edge.

Figure 4-1

Figure 4-1

Figure 4-1

-relief =>'flat'|'groove'|'raised'|'ridge'|'sunken'|'solid' Changes the type of edges drawn around the Button. Default for Checkbutton and Radiobutton is 'flat' .

Figure 4-1

Figure 4-1

Figure 4-1

-selectcolor => color Sets the color of the indicator when on.  

Figure 4-1

Figure 4-1

-selectimage => imgptr Indicates the image to display instead of text when Button is on. Ignored if -image is not used.  

Figure 4-1

Figure 4-1

-state => 'normal' | 'disabled' | 'active' Indicates the Button's state of responsiveness. If set to 'disabled' , the Button does not respond.

Figure 4-1

Figure 4-1

Figure 4-1

-takefocus => 0 | 1 | undef Indicates that the Button will never get focus (0), always get focus (1), or let the application decide (undef ).

Figure 4-1

Figure 4-1

Figure 4-1

-text => 'text' Sets the text string displayed on the Button.

Figure 4-1

Figure 4-1

Figure 4-1

-textvariable => /$variable Points to a variable containing text to be displayed in Button. Button text will change as $variable does.

Figure 4-1

Figure 4-1

Figure 4-1

-underline => n Underlines the n th character in the text string. Allows keyboard input via that character when Button has the focus. It's important to note that the character is only underlined; any behavior must be supplied by the programmer via a bind command. See Chapter 15, "Anatomy of the MainLoop" for binding details.

Figure 4-1

Figure 4-1

Figure 4-1

-value => newvalue Sets the value assigned to $variable (with -variable option) when this Radiobutton is selected. Default is 1.    

Figure 4-1

-variable => /$value Associates the on/off values with $variable .  

Figure 4-1

Figure 4-1

-width => amount Sets the width of the Button in characters if text is displayed and as a screen distance if an image or bitmap is displayed.

Figure 4-1

Figure 4-1

Figure 4-1

-wraplength => amount Sets the screen distance for the maximum amount of text displayed on one line. The default is 0, which means that text is not wrapped at word boundaries, only at line breaks (newlines).

Figure 4-1

Figure 4-1

 

$image = $mw->Photo(-file => "bigredbutton.gif");

$mw->Button(-text => 'Exit', -command => sub { exit },

-image => $image)->pack;




修改button的风格：
flat No edges are drawn around the Button at all. Makes it look like only text is present in the window. groove Gives a slightly depressed look to the edge (as if there were a ditch around the text). raised Gives a 3D look with a shadow on the lower and right sides of the Button, which causes it to look higher than the window surface. This is the default. ridge Makes it look like a ridge is around the text. The opposite of 'groove' . solid Draws a solid line around the widget. sunken Gives the 3D effect of being below the surface of the window. The opposite of 'raised'
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