dev_set_color - 设置一个或多个（窗口）输出颜色。

dev_set_color( : : ColorName : )

dev_set_color定义用于在图形窗口中显示region，XLD和其他geometrical对象的颜色。 可用的颜色可以通过算子query_color查询。 另外，ColorName可以被指定为’#rrggbb’形式的RGB三元组，其中’rr’，'gg’和’bb’分别是’00’和’ff’之间的十六进制数字。

有关更多信息，请参阅算子set_color的说明。 但是，与算子set_color相反，此算子颜色设置也用于之后打开的所有新图形窗口。

这些颜色设置一直保持有效，直到调用dev_set_color或dev_set_colored，或直到交互式修改颜色设置。

原文描述：

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.

使用HDevelop的代码导出功能，为该算子生成的代码可能与相关的HALCON算子具有不同的行为。 有关将HDevelop图形算子导出为不同编程语言的代码的详细说明，请参阅“HDevelop User’s Guide”中的 Code Export -> General Aspects of Code Generation -> Graphics Windows一章。

ColorName (input_control) string(-array) → (string) 　　Output color names. 　　Default value: ‘white’ 　　Suggested values: ‘white’, ‘black’, ‘gray’, ‘red’, ‘green’, ‘blue’, ‘#003075’, ‘#e53019’, ‘#ffb529’

HDevelop例程

label_word_process_mlp.hdev Read a best-before label using a MLP-based OCR classifier and a lexicon to improve results display_operators.hdev Visualize results close_contour_gaps.hdev Close gaps in extracted straight contours clip.hdev Determine the position and orientation of clips advanced_visualization_settings.hdev Improve the visualization with transparency, anti-aliasing, and more

程序示例

如果指定参数的值正确，则dev_set_color返回2（H_MSG_TRUE）。 否则会引发异常并返回错误代码。

7.1 机器视觉博客汇总 网址：https://dengjin.blog.csdn.net/article/details/116837497