draw_point_modT_draw_point_modDrawPointModDrawPointModdraw_point_mod (算子名称)
名称
draw_point_modT_draw_point_modDrawPointModDrawPointModdraw_point_mod — Draw a point.
参数签名
描述
draw_point_moddraw_point_modDrawPointModDrawPointModDrawPointModdraw_point_mod returns the parameter for a point, which has been
created interactively by the user in the window.
To create a point are expected the coordinates RowInRowInRowInRowInrowInrow_in and
ColumnInColumnInColumnInColumnIncolumnIncolumn_in.
While keeping the button pressed you may “drag” the point in any direction.
Pressing the right mouse button terminates the procedure.
After terminating the procedure the point 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
- Multithreading type: reentrant (runs in parallel with non-exclusive operators).
- Multithreading scope: global (may be called from any thread).
- Processed without parallelization.
参数表
WindowHandleWindowHandleWindowHandleWindowHandlewindowHandlewindow_handle (input_control) window → HWindow, HTupleHHandleHTupleHtuple (handle) (IntPtr) (HHandle) (handle)
Window handle.
RowInRowInRowInRowInrowInrow_in (input_control) point.y → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Row index of the point.
ColumnInColumnInColumnInColumnIncolumnIncolumn_in (input_control) point.x → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Column index of the point.
RowRowRowRowrowrow (output_control) point.y → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Row index of the point.
ColumnColumnColumnColumncolumncolumn (output_control) point.x → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Column index of the point.
例程 (HDevelop)
draw_point_mod (WindowHandle, 100, 100, Row,Column)
gen_cross_contour_xld (Cross, Row, Column, 6, 0)
例程 (C)
draw_point_mod (WindowHandle, 100, 100, &Row,&Column);
gen_cross_contour_xld (&Cross, Row, Column, 6.0, 0.0);
例程 (HDevelop)
draw_point_mod (WindowHandle, 100, 100, Row,Column)
gen_cross_contour_xld (Cross, Row, Column, 6, 0)
例程 (HDevelop)
draw_point_mod (WindowHandle, 100, 100, Row,Column)
gen_cross_contour_xld (Cross, Row, Column, 6, 0)
例程 (HDevelop)
draw_point_mod (WindowHandle, 100, 100, Row,Column)
gen_cross_contour_xld (Cross, Row, Column, 6, 0)
结果
draw_point_moddraw_point_modDrawPointModDrawPointModDrawPointModdraw_point_mod returns 2 (
H_MSG_TRUE)
, if the window is valid and the
needed drawing mode is available.
If necessary, an exception is raised.
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_pointdraw_pointDrawPointDrawPointDrawPointdraw_point,
draw_circledraw_circleDrawCircleDrawCircleDrawCircledraw_circle,
draw_ellipsedraw_ellipseDrawEllipseDrawEllipseDrawEllipsedraw_ellipse,
set_insertset_insertSetInsertSetInsertSetInsertset_insert
模块
Foundation