draw_rectangle1T_draw_rectangle1DrawRectangle1DrawRectangle1draw_rectangle1 (算子名称)
名称
draw_rectangle1T_draw_rectangle1DrawRectangle1DrawRectangle1draw_rectangle1 — Draw a rectangle parallel to the coordinate axis.
参数签名
def draw_rectangle1(window_handle: HHandle) -> Tuple[float, float, float, float]
描述
draw_rectangle1draw_rectangle1DrawRectangle1DrawRectangle1DrawRectangle1draw_rectangle1 returns the parameter for a rectangle parallel
to the coordinate axes, which has been created interactively by the user
in the window.
To create a rectangle you have to press the left mouse button determining a corner
of the rectangle. While keeping the button pressed you may “drag” the rectangle in
any direction. After another mouse click in the middle of the created rectangle
you can move it.
A click close to one side “grips” it to modify the rectangle's dimension in perpendicular
direction to this side. If you click on one corner of the created rectangle, you may
move this corner.
Pressing the right mouse button terminates the procedure.
After terminating the procedure the rectangle is not visible in the window any longer.
注意
If used in a buffer window, mouse events have to be supplied by the
application, while the draw operator must be run in another thread.
运行信息
- 多线程类型:可重入(与非独占操作符并行运行)。
- 多线程作用域:全局(可以从任何线程调用)。
- 未经并行化处理。
参数表
WindowHandleWindowHandleWindowHandleWindowHandlewindowHandlewindow_handle (input_control) window → HWindow, HTupleHHandleHTupleHtuple (handle) (IntPtr) (HHandle) (handle)
Window handle.
Row1Row1Row1Row1row1row_1 (output_control) rectangle.origin.y → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Row index of the left upper corner.
Column1Column1Column1Column1column1column_1 (output_control) rectangle.origin.x → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Column index of the left upper corner.
Row2Row2Row2Row2row2row_2 (output_control) rectangle.corner.y → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Row index of the right lower corner.
Column2Column2Column2Column2column2column_2 (output_control) rectangle.corner.x → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Column index of the right lower corner.
例程 (HDevelop)
read_image(Image,'monkey')
get_image_size (Image, Width, Height)
dev_display (Image)
draw_rectangle1(WindowHandle,Row1,Column1,Row2,Column2)
dev_set_part (Row1, Column1, Row2, Column2)
dev_display (Image)
例程 (C)
read_image(&Image,"monkey");
get_image_size(Image,&Width,&Height);
disp_image(Image,WindowHandle);
draw_rectangle1(WindowHandle,&Row1,&Column1,&Row2,&Column2);
set_part(WindowHandle,Row1,Column1,Row2,Column2);
disp_image(Image,WindowHandle);
例程 (HDevelop)
read_image(Image,'monkey')
get_image_size (Image, Width, Height)
dev_display (Image)
draw_rectangle1(WindowHandle,Row1,Column1,Row2,Column2)
dev_set_part (Row1, Column1, Row2, Column2)
dev_display (Image)
例程 (HDevelop)
read_image(Image,'monkey')
get_image_size (Image, Width, Height)
dev_display (Image)
draw_rectangle1(WindowHandle,Row1,Column1,Row2,Column2)
dev_set_part (Row1, Column1, Row2, Column2)
dev_display (Image)
例程 (HDevelop)
read_image(Image,'monkey')
get_image_size (Image, Width, Height)
dev_display (Image)
draw_rectangle1(WindowHandle,Row1,Column1,Row2,Column2)
dev_set_part (Row1, Column1, Row2, Column2)
dev_display (Image)
结果
draw_rectangle1draw_rectangle1DrawRectangle1DrawRectangle1DrawRectangle1draw_rectangle1 returns 2 (
H_MSG_TRUE)
, if the window is valid and the
needed drawing mode (see set_insertset_insertSetInsertSetInsertSetInsertset_insert) is available.
如有必要，将引发异常。
可能的前置算子
open_windowopen_windowOpenWindowOpenWindowOpenWindowopen_window
可能的后置算子
reduce_domainreduce_domainReduceDomainReduceDomainReduceDomainreduce_domain,
disp_regiondisp_regionDispRegionDispRegionDispRegiondisp_region,
set_coloredset_coloredSetColoredSetColoredSetColoredset_colored,
set_line_widthset_line_widthSetLineWidthSetLineWidthSetLineWidthset_line_width,
set_drawset_drawSetDrawSetDrawSetDrawset_draw,
set_insertset_insertSetInsertSetInsertSetInsertset_insert
可替代算子
draw_rectangle1_moddraw_rectangle1_modDrawRectangle1ModDrawRectangle1ModDrawRectangle1Moddraw_rectangle1_mod,
draw_rectangle2draw_rectangle2DrawRectangle2DrawRectangle2DrawRectangle2draw_rectangle2,
draw_regiondraw_regionDrawRegionDrawRegionDrawRegiondraw_region
参考其它
gen_rectangle1gen_rectangle1GenRectangle1GenRectangle1GenRectangle1gen_rectangle1,
draw_circledraw_circleDrawCircleDrawCircleDrawCircledraw_circle,
draw_ellipsedraw_ellipseDrawEllipseDrawEllipseDrawEllipsedraw_ellipse,
set_insertset_insertSetInsertSetInsertSetInsertset_insert
模块
Foundation