dev_set_draw — Define the region fill mode.
dev_set_draw( : : DrawMode : )
dev_set_draw defines the fill mode for regions.
If DrawMode is set to 'fill', regions are displayed
filled, if set to 'margin', only contours are displayed.
In the 'margin' mode, the appearance of the contours can be
affected by dev_set_line_width and set_line_style。
For more information see the description of the operator set_draw。However, in contrast to that operator the draw mode is also used for
all new graphics windows that are opened afterwards.
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.
DrawMode (输入控制) string → (string)
Fill mode for region output.
默认值： 'fill'
值列表： 'fill', 'margin'
read_image(Image,'monkey')
threshold(Image,Region,128,255)
dev_clear_window ()
dev_set_color('red')
dev_set_draw('fill')
dev_display(Region)
dev_set_color('white')
dev_set_draw('margin')
dev_display(Region)
If the values of the specified parameters are correct,
dev_set_draw 返回 2 ( H_MSG_TRUE )。否则，将抛出一个异常并返回错误代码。
dev_set_line_width,
dev_display
基础