The hk_classes Python reference
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# 2.29. hk_visible

Base class for visible widgets. It handles the geometry and the look of the widgets.

Inherits from hk_class.

Figure 2-7. Geometry specific methods

> set_size(x, y,width,height)

>   lets you to set position and size of an object

> set_size(width,height)

>   lets you to set size of an object

> set_position(x,y)

>   lets you to set position of an object

> set_x(x)

>   lets you to set the horizontal position of an object

> set_y(y)

>   lets you to set the vertical position of an object

> set_width(width)

>   see set_size()

> set_height(height)

>   see set_size()

> x()

>   returns the x co-ordinate of the object

> y()

>   returns the y co-ordinate of the object

> width()

>   returns the width of the object

> height()

>   returns the height of the object

Figure 2-8. Look and Feel methods

> set_font(fontname,size)

>   sets the font, e.g. set_font("Arial",12)

> set_font(font)

>   sets the font of type hk_font, e.g.

>   Example 2-12. Setting a font

>          1   myfont=hk_font("Arial",12)
>          2   set_font(myfont)

> hk_font font()

>   returns a font object of type hk_font

> set_foregroundcolour(colour)

>   sets the foreground colour. 'colour' is of type hk_colour. The foreground colour will be used for fonts, frames etc

> foregroundcolour()

>   returns the foreground colour, which is of type hk_colour.

> set_backgroundcolour(colour)

>   sets the background colour. 'colour' is of type hk_colour. This colour will be used to fill the whole background.

> hk_colour backgroundcolour()

>   returns the background colour, which is of type hk_colour.

Figure 2-9. Miscelleanous methods

> set_label(labeltext)

>   Every visible object has a label which will be displayed when necessary, i.e. a button usually needs a label

> label()

>   returns the label string.

> type()

>   returns the type of this object. Possible values are:

>   - textlabel

>   - button

>   - rowselector

>   - boolean

>   - lineedit

>   - memo

>   - combobox

>   - grid

>   - report

>   - reportsection

>   - reportdata

>   - other

> identifier()

>   the identifier is a unique name within a presentation (either a form or a report) with which this object can be identified and thus located

> presentation()

>   returns the parent hk_presentation object (either a form or a report)

The following example shows how to move the button within the form, how to change the colour and how to display different text on the button.

Example 2-13. Changing colour and position

       1 redcolour =hk_colour(255,0,0)
       2 greencolour =hk_colour(0,255,0)
       3 if hk_this.foregroundcolour().red()!=255:
       4 	hk_this.set_foregroundcolour(redcolour)
       5 	hk_this.set_backgroundcolour(greencolour)
       6 	hk_this.set_label("green button")
       7 else:
       8 	hk_this.set_foregroundcolour(greencolour)
       9 	hk_this.set_backgroundcolour(redcolour)
      10 	hk_this.set_label("red button")
      11
      12 hk_this.set_position(hk_this.x()+50,hk_this.y()+10)

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