ClassesClasses | | Operators

drag_region2drag_region2DragRegion2DragRegion2 (Operator)

Name

drag_region2drag_region2DragRegion2DragRegion2 — Interactive movement of a region with fixpoint specification.

Signature

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

Herror drag_region2(const Hobject SourceRegion, Hobject* DestinationRegion, const Hlong WindowHandle, const Hlong Row, const Hlong Column)

Herror T_drag_region2(const Hobject SourceRegion, Hobject* DestinationRegion, const Htuple WindowHandle, const Htuple Row, const Htuple Column)

void DragRegion2(const HObject& SourceRegion, HObject* DestinationRegion, const HTuple& WindowHandle, const HTuple& Row, const HTuple& Column)

HRegion HRegion::DragRegion2(const HWindow& WindowHandle, Hlong Row, Hlong Column) const

HRegion HWindow::DragRegion2(const HRegion& SourceRegion, Hlong Row, Hlong Column) const

static void HOperatorSet.DragRegion2(HObject sourceRegion, out HObject destinationRegion, HTuple windowHandle, HTuple row, HTuple column)

HRegion HRegion.DragRegion2(HWindow windowHandle, int row, int column)

HRegion HWindow.DragRegion2(HRegion sourceRegion, int row, int column)

Description

You use drag_region2drag_region2DragRegion2DragRegion2DragRegion2 to move a region on the display by mouse. It corresponds to the operator drag_region1drag_region1DragRegion1DragRegion1DragRegion1 with the difference, that the position of the mouse cursor can be determined.

Attention

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.

Execution Information

Parameters

SourceRegionSourceRegionSourceRegionSourceRegionsourceRegion (input_object)  region-array objectHRegionHRegionHobject

Regions to move.

DestinationRegionDestinationRegionDestinationRegionDestinationRegiondestinationRegion (output_object)  region-array objectHRegionHRegionHobject *

Moved regions.

WindowHandleWindowHandleWindowHandleWindowHandlewindowHandle (input_control)  window HWindow, HTupleHTupleHtuple (integer) (IntPtr) (Hlong) (Hlong)

Window handle.

RowRowRowRowrow (input_control)  point.y HTupleHTupleHtuple (integer) (int / long) (Hlong) (Hlong)

Row index of the reference point.

Default value: 100

Suggested values: 0, 64, 128, 256, 512

Typical range of values: 0 ≤ Row Row Row Row row ≤ 1024

ColumnColumnColumnColumncolumn (input_control)  point.x HTupleHTupleHtuple (integer) (int / long) (Hlong) (Hlong)

Column index of the reference point.

Default value: 100

Suggested values: 0, 64, 128, 256, 512

Typical range of values: 0 ≤ Column Column Column Column column ≤ 1024

Result

drag_region2drag_region2DragRegion2DragRegion2DragRegion2 returns 2 (H_MSG_TRUE), if a region is entered, the window is valid and the needed drawing mode (see set_insertset_insertSetInsertSetInsertSetInsert) is available. If necessary, an exception is raised. 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>).

Possible Predecessors

open_windowopen_windowOpenWindowOpenWindowOpenWindow

Possible Successors

reduce_domainreduce_domainReduceDomainReduceDomainReduceDomain, disp_regiondisp_regionDispRegionDispRegionDispRegion, set_coloredset_coloredSetColoredSetColoredSetColored, set_line_widthset_line_widthSetLineWidthSetLineWidthSetLineWidth, set_drawset_drawSetDrawSetDrawSetDraw, set_insertset_insertSetInsertSetInsertSetInsert, affine_trans_imageaffine_trans_imageAffineTransImageAffineTransImageAffineTransImage

Alternatives

get_mpositionget_mpositionGetMpositionGetMpositionGetMposition, move_regionmove_regionMoveRegionMoveRegionMoveRegion, drag_region1drag_region1DragRegion1DragRegion1DragRegion1, drag_region3drag_region3DragRegion3DragRegion3DragRegion3

See also

set_insertset_insertSetInsertSetInsertSetInsert, set_drawset_drawSetDrawSetDrawSetDraw, affine_trans_imageaffine_trans_imageAffineTransImageAffineTransImageAffineTransImage

Module

Foundation


ClassesClasses | | Operators