#include "l_bitmap.h"
L_LTANN_API L_INT L_AnnSelectPoint(hObject, pPoint)
Selects the annotation object at the specified point, relative to the window. If objects overlap, this function selects the front object.
Handle to the annotation object.
Pointer to the Windows POINT structure. Coordinates are relative to the associated window's client area.
Value | Meaning |
---|---|
SUCCESS | The function was successful. |
< 1 | An error occurred. Refer to Return Codes. |
Selecting an object sets its selected property to TRUE.
Required DLLs and Libraries
Win32, x64.
This example selects an object at a particular point in the window, changes the
background color of selected object, and updates the display.
L_INT AnnSelectPointExample(HWND hWnd,
HANNOBJECT hContainer)/* Container annotation object */
{
L_INT nRet;
RECT rClientArea; /* Client area of the current window */
POINT SelectionPoint; /* Point in the client area */
HDC hWindowDC; /* Device context of the current window */
RECT rAnnBounds; /* Bounding rectangle when displaying the note */
/* Get the device context of the current window */
hWindowDC = GetDC (hWnd);
/* Get the client area of the current window */
GetClientRect(hWnd,&rClientArea);
/* Select an object in the top left part of the window */
SelectionPoint.y = rClientArea.bottom / 4;
SelectionPoint.x = rClientArea.right / 4;
nRet = L_AnnSelectPoint(hContainer, &SelectionPoint);
if(nRet != SUCCESS)
return nRet;
/* Set the background color of the selected object */
nRet = L_AnnSetBackColor(hContainer, RGB(255,0,0), ANNFLAG_SELECTED|ANNFLAG_RECURSE);
if(nRet != SUCCESS)
return nRet;
/* Get the bounding rectangle of the selected object */
nRet = L_AnnGetSelectRect(hContainer, &rAnnBounds);
if(nRet != SUCCESS)
return nRet;
/* Get the window's device context */
hWindowDC = GetDC (hWnd);
/* Display the change */
nRet = L_AnnDraw(hWindowDC, &rAnnBounds, hContainer);
if(nRet != SUCCESS)
return nRet;
/* Remove the queued paint message */
ValidateRect(hWnd, &rAnnBounds);
return SUCCESS;
}
Help Collections
Raster .NET | C API | C++ Class Library | HTML5 JavaScript
Document .NET | C API | C++ Class Library | HTML5 JavaScript
Medical .NET | C API | C++ Class Library | HTML5 JavaScript
Medical Web Viewer .NET
Multimedia
Direct Show .NET | C API | Filters
Media Foundation .NET | C API | Transforms
Supported Platforms
.NET, Java, Android, and iOS/macOS Assemblies
Imaging, Medical, and Document
C API/C++ Class Libraries
Imaging, Medical, and Document
HTML5 JavaScript Libraries
Imaging, Medical, and Document