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>Chapter 2. General object methods- the class hk_visible</H1
><P
>Each visible object of hk_classes is inherited from a class called hk_visible, so we will now have a look on the general available methods
<DIV
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>Figure 2-1. Geometry specific methods</B
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> set_size(x, y,width,height): lets you to set position and size of an object</P
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>set_size(width,height): lets you to set size of an object</P
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><P
>set_position(x,y): lets you to set position of an object</P
></LI
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><P
>set_x(x): lets you to set the horizontal position of an object</P
></LI
><LI
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><P
>set_y(y): lets you to set the vertical position of an object</P
></LI
><LI
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><P
>set_width(width)</P
></LI
><LI
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><P
>set_height(height)</P
></LI
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>x() returns the x co-ordinate of the object</P
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>y() returns the y co-ordinate of the object</P
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>width() returns the width of the object</P
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>height() returns the height of the object</P
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>Figure 2-2. Look and Feel methods</B
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>set_font(fontname,size), sets the font, e.g. set_font("Arial",12)</P
></LI
><LI
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><P
>set_font(font)</P
></LI
><LI
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><P
>hk_font font(), returns a font object</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>set_foregroundcolour(colour)</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>foregroundcolour()</P
></LI
><LI
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><P
>set_backgroundcolour(colour)</P
></LI
><LI
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><P
>hk_colour backgroundcolour()</P
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>
<DIV
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><P
><B
>Figure 2-3. Miscelleanous methods</B
></P
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><BLOCKQUOTE
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><UL
><LI
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><P
>set_label(labeltext)</P
></LI
><LI
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><P
>label()</P
></LI
><LI
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><P
>enum enum_visibletype {textlabel,button,rowselector,boolean,lineedit,memo,combobox,grid,form,report,reportsection,reportdata,other}</P
></LI
><LI
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><P
>enum_visibletype type(void) </P
></LI
><LI
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><P
>identifier()</P
></LI
><LI
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><P
>hk_presentation* presentation(); returns the parent presentation object (either a form or a report)</P
></LI
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></BLOCKQUOTE
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>
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.
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><HR><A
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><P
><B
>Example 2-1. Changing colour and position</B
></P
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> 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)
13 </PRE
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> </P
><P
><DIV
CLASS="FIGURE"
><HR><A
NAME="AEN116"
></A
><P
><B
>Figure 2-4. Predefined colour names</B
></P
><A
NAME="AEN118"
></A
><BLOCKQUOTE
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><UL
><LI
STYLE="list-style-type: disc"
><P
>hk_aqua</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>hk_beige</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>hk_black</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>hk_blue</P
></LI
><LI
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><P
>hk_brown</P
></LI
><LI
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><P
>hk_fuchsia</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>hk_darkgrey</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>hk_green</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>hk_grey</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>hk_lightgrey</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>hk_lime</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>hk_maroon</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>hk_navy</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>hk_olive</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>hk_orange</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>hk_pink</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>hk_purple</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>hk_red</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>hk_silver</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>hk_teal</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>hk_white</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>hk_yellow</P
></LI
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