LImageViewerCell::ActionCallBack

#include "ltwrappr.h"

virtual L_INT LImageViewerCell::ActionCallBack (phBitmapList, uCount, nAction, uMessage, wParam, ptMousePos);

This callback function is called each time the user clicks or drags the mouse, rotates the mouse wheel, or presses a keyboard button, if the mouse or keyboard event is associated with a user-defined action.

Parameters

HBITMAPLIST * phBitmapList

An array of bitmap lists that represent all the bitmap lists of all cells selected by the user.

L_UINT uCount

The number of bitmap lists referenced by phBitmapList.

L_INT nAction

Value that indicates the action associated with the mouse or keyboard event. Since this callback is used for user-defined actions, this value should be >= 100. Otherwise, it can be one of the following predefined actions:

Value Meaning
CONTAINER_ACTION_WINDOWLEVEL [1] Window leveling
CONTAINER_ACTION_SCALE [2] Scaling
CONTAINER_ACTION_OFFSET [3] Offset
CONTAINER_ACTION_STACK [4] Stacking
CONTAINER_ACTION_MAG [5] Magnifying glass
CONTAINER_ACTION_ALPHA [6] Alpha
CONTAINER_ACTION_ANNOTATION_RULER [7] Ruler annotation
CONTAINER_ACTION_ANNOTATION_ANGLE [8] Angle annotation
CONTAINER_ACTION_ANNOTATION_TEXT [9] Text annotation
CONTAINER_ACTION_ANNOTATION_ARROW [10] Arrow annotation
CONTAINER_ACTION_ANNOTATION_RECTANGLE [11] Rectangle annotation
CONTAINER_ACTION_ANNOTATION_ELLIPSE [12] Ellipse annotation
CONTAINER_ACTION_ANNOTATION_HILITE [13] Highlight annotation
CONTAINER_ACTION_REGION_RECTANGLE [14] Rectangular region
CONTAINER_ACTION_REGION_ELLIPSE [15] Elliptical region
CONTAINER_ACTION_REGION_FREEHAND [16] Free hand region
CONTAINER_ACTION_REGION_POLYGON [17] Polygon region
CONTAINER_ACTION_REGION_MAGICWAND [18] Magic wand (contiguous color) region
CONTAINER_ACTION_REGION_COLORRANGE [19] Color range region
CONTAINER_ACTION_REGION_CIRCLE [20] Circular region
CONTAINER_ACTION_REGION_SQUARE [21] Square region
CONTAINER_ACTION_REGION_NUDGETOOL [22] Nudge tool
CONTAINER_ACTION_REGION_SHRINKTOOL [23] Shrink tool

L_UINT uMessage

Value that represents the message from either the mouse or the keyboard. Possible values are:

WM_KEYDOWN

WM_KEYUP

WM_LBUTTONDOWN

WM_LBUTTONUP

WM_MBUTTONDOWN

WM_MBUTTONUP

WM_XBUTTONDOWN

WM_XBUTTONUP

WM_MOUSEMOVE

WM_MOUSEWHEEL

WM_RBUTTONDOWN

WM_RBUTTONUP

L_UINT wParam

Additional message information.

POINT * ptMousePos

A point that represents the position of the cursor.

Returns

Value Meaning
SUCCESS The function was successful.
< 1 An error occurred. Refer to Return Codes.

Comments

A user-defined action is added to a container by calling LImageViewerCell::SetAction. If a mouse or keyboard event that is associated with a user-defined action occurs, this callback function is called to allow the user to handle the action.

In order to use this callback function, it must first be set by calling LImageViewerCell::EnableActionCallBack.

Required DLLs and Libraries

Help Version 20.0.2019.9.19
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2019 LEAD Technologies, Inc. All Rights Reserved.

LEADTOOLS Medical Image Viewer C++ Class Library Help