draw_lineT_draw_lineDrawLineDrawLinedraw_line (算子名称)
名称
draw_lineT_draw_lineDrawLineDrawLinedraw_line — Draw a line.
参数签名
def draw_line(window_handle: HHandle) -> Tuple[float, float, float, float]
描述
draw_linedraw_lineDrawLineDrawLineDrawLinedraw_line returns the parameter for a line, which has been
created interactively by the user in the window.
To create a line you have to press the left mouse button determining a start point
of the line. While keeping the button pressed you may “drag” the line in
any direction. After another mouse click in the middle of the created line
you can move it.
If you click on one end point of the created line, you may move this point.
Pressing the right mouse button terminates the procedure.
After terminating the procedure the line 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) line.begin.y → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Row index of the first point of the line.
Column1Column1Column1Column1column1column_1 (output_control) line.begin.x → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Column index of the first point of the line.
Row2Row2Row2Row2row2row_2 (output_control) line.end.y → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Row index of the second point of the line.
Column2Column2Column2Column2column2column_2 (output_control) line.end.x → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Column index of the second point of the line.
例程 (HDevelop)
draw_line(WindowHandle,Row1,Column1,Row2,Column2)
gen_contour_polygon_xld (Line, [Row1,Row2], [Column1,Column2])
dev_display (Line)
例程 (C)
draw_line(WindowHandle,&Row1,&Column1,&Row2,&Column2);
disp_line(WindowHandle,Row1,Column1,Row2,Column2);
例程 (HDevelop)
draw_line(WindowHandle,Row1,Column1,Row2,Column2)
gen_contour_polygon_xld (Line, [Row1,Row2], [Column1,Column2])
dev_display (Line)
例程 (HDevelop)
draw_line(WindowHandle,Row1,Column1,Row2,Column2)
gen_contour_polygon_xld (Line, [Row1,Row2], [Column1,Column2])
dev_display (Line)
例程 (HDevelop)
draw_line(WindowHandle,Row1,Column1,Row2,Column2)
gen_contour_polygon_xld (Line, [Row1,Row2], [Column1,Column2])
dev_display (Line)
结果
draw_linedraw_lineDrawLineDrawLineDrawLinedraw_line 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_linedisp_lineDispLineDispLineDispLinedisp_line,
set_coloredset_coloredSetColoredSetColoredSetColoredset_colored,
set_line_widthset_line_widthSetLineWidthSetLineWidthSetLineWidthset_line_width,
set_drawset_drawSetDrawSetDrawSetDrawset_draw,
set_insertset_insertSetInsertSetInsertSetInsertset_insert
参考其它
draw_line_moddraw_line_modDrawLineModDrawLineModDrawLineModdraw_line_mod,
gen_rectangle1gen_rectangle1GenRectangle1GenRectangle1GenRectangle1gen_rectangle1,
draw_circledraw_circleDrawCircleDrawCircleDrawCircledraw_circle,
draw_ellipsedraw_ellipseDrawEllipseDrawEllipseDrawEllipsedraw_ellipse,
set_insertset_insertSetInsertSetInsertSetInsertset_insert
模块
Foundation