dev_set_color — Set one or more output colors.
dev_set_color( : : ColorName : )
dev_set_color defines the color(s) that are used to display regions,
XLDs, and other geometrical objects in the graphics windows. The available
colors can be queried with the operator query_color. In
addition, the ColorName may be specified as hexadecimal RGB triplet
or RGBA quadruplet in the form '#rrggbb' and '#rrggbbaa'.
'rr', 'gg', 'bb', and 'aa' are hexadecimal numbers
between '00' and 'ff', respectively. 'aa' denotes the alpha value of a
color and can be used to display transparent regions.
For more information see the description of the operator set_color.
However, in contrast to that operator the color setting is also used for
all new graphics windows that are opened afterwards.
These color settings remain valid until dev_set_color or
dev_set_colored is called or until the color settings are modified
interactively.
Using the code export feature of HDevelop, the code that is generated
for this operator may have a different behavior than the related
HALCON operator.
For a detailed description of the code export of HDevelop graphics
operators into the different programming languages see in the
“HDevelop User's Guide” the chapter Code Export
-> General Aspects of Code Generation
-> Graphics Windows.
ColorName (input_control) string(-array) → (string)
Output color names.
Default value: 'white'
Suggested values: 'white', 'black', 'gray', 'red', 'green', 'blue', '#003075', '#e53019', '#ffb529'
read_image(Image,'mreut')
dev_set_draw('fill')
dev_set_color('red')
threshold(Image,Region,180,255)
dev_set_color('green')
threshold(Image,Region,0,179)
If the values of the specified parameters are correct,
dev_set_color returns 2 (H_MSG_TRUE). Otherwise, an
exception is raised and an error code returned.
dev_open_window,
query_color,
query_all_colors
dev_set_draw,
dev_set_line_width,
set_color
Foundation