drag_region2T_drag_region2DragRegion2DragRegion2drag_region2 (算子)

名称

drag_region2T_drag_region2DragRegion2DragRegion2drag_region2 — 具有定点规范的区域的交互式移动。

警告

This operator does not work in an HDevelop graphics window opened with dev_open_window.

签名

drag_region2(SourceRegion : DestinationRegion : WindowHandle, Row, Column : )

描述

You use drag_region2drag_region2DragRegion2DragRegion2DragRegion2drag_region2 to move a region on the display by mouse. It corresponds to the operator drag_region1drag_region1DragRegion1DragRegion1DragRegion1drag_region1 with the difference, that the position of the mouse cursor can be determined.

注意

Gray values of the regions are not moved. With moving the input region it is not sure whether the gray values of the output regions are filled reasonable. This may occur if the gray values of the input regions do not comprise the whole image.

执行信息

多线程类型：可重入（与非独占算子并行运行）。
多线程作用域：全局（可从任何线程调用）。
未采用并行化处理。

参数

SourceRegionSourceRegionSourceRegionSourceRegionsourceRegionsource_region (输入对象) region-array → object

Regions to move.

DestinationRegionDestinationRegionDestinationRegionDestinationRegiondestinationRegiondestination_region (输出对象) region-array → object

Moved regions.

WindowHandleWindowHandleWindowHandleWindowHandlewindowHandlewindow_handle (输入控制) window → (handle)

窗口句柄。

RowRowRowRowrowrow (输入控制) point.y → (integer)

Row index of the reference point.

默认值： 100

建议值： 0, 64, 128, 256, 512

值范围： 0 ≤ Row Row Row Row row row ≤ 1024

ColumnColumnColumnColumncolumncolumn (输入控制) point.x → (integer)

Column index of the reference point.

默认值： 100

建议值： 0, 64, 128, 256, 512

值范围： 0 ≤ Column Column Column Column column column ≤ 1024

结果

drag_region2drag_region2DragRegion2DragRegion2DragRegion2drag_region2 returns 2 ( H_MSG_TRUE) , if a region is entered, the window is valid and the needed drawing mode (see set_insertset_insertSetInsertSetInsertSetInsertset_insert) is available。如有必要，则抛出异常。 You may determine the behavior after an empty input with set_system(::'no_object_result',<Result>:)set_system("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>)set_system("no_object_result",<Result>)。

可能的前趋

open_windowopen_windowOpenWindowOpenWindowOpenWindowopen_window

可能的后继

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, affine_trans_imageaffine_trans_imageAffineTransImageAffineTransImageAffineTransImageaffine_trans_image

替代

get_mpositionget_mpositionGetMpositionGetMpositionGetMpositionget_mposition, move_regionmove_regionMoveRegionMoveRegionMoveRegionmove_region, drag_region1drag_region1DragRegion1DragRegion1DragRegion1drag_region1, drag_region3drag_region3DragRegion3DragRegion3DragRegion3drag_region3

另见

set_insertset_insertSetInsertSetInsertSetInsertset_insert, set_drawset_drawSetDrawSetDrawSetDrawset_draw, affine_trans_imageaffine_trans_imageAffineTransImageAffineTransImageAffineTransImageaffine_trans_image

模块

基础