2 Visual Components Manuals

Introduction to Visual Components 2.3
The position of the line can be set exactly (in pixels)
under the Parameter tab. The Top, Left, Right and
Bottom settings specify the position of the respective
endpoint in pixels.
The Status Variable is of data type UINT. For lines, bit
0 is responsible for determining whether the line is
drawn or not.
BIT 0 == 1 − Line not shown
BIT 0 == 0 − Line shown
Basic colors for all lines can be set under the global
color settings. These global settings apply to all lines
which have this option selected.
Lines may also have individual color settings.
Individual colors can be selected by disabling the Use
Global option.
The optional variable in the Colors Variable field can
change the line color during runtime. The variable has
to be of data type UINT.
The higher value byte sets the foreground line color
(0−255). The lower value byte is not used.
4.5.3 Rectangle and Square
Rectangles can be drawn with any size and color using the editor. Not all panels support rectangles. Some
panels cannot draw rectangles filled with color. This hardware limitation is taken into account by the editor.
4.5.3.1 Drawing Rectangles
Rectangle mode is enabled by selecting the rectangle icon from the toolbar. A rectangle can be drawn on
the display in this mode by pressing the left mouse button. Drawing squares takes place while simultaneously
holding down the Ctrl key while drawing. The line width for a rectangle is always 1 pixel. The position and size of
the rectangle can be changed after it has been drawn.
Double−clicking on the rectangle opens the Object Properties dialog box.
A selected rectangle is displayed in the editor
with a border. It can now be enlarged or
reduced.
As shown here, selection mode has to be
active (mouse pointer icon).
Right clicking on an empty area in the editor
changes from selection mode to object editing
mode.
4.5.3 Rectangle and Square 315