Selects the annotation object at the specified point, relative to the window. If objects overlap, this function selects the front object.
#include "l_bitmap.h"
L_LTANN_API L_INT L_AnnSelectPoint(hObject, pPoint)
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.
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(L_HWND hWnd, HANNOBJECT hContainer /* Container annotation object */)
{
L_INT nRet;
L_RECT rClientArea; /* Client area of the current window */
L_POINT SelectionPoint; /* Point in the client area */
L_HDC hWindowDC; /* Device context of the current window */
L_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
Your email has been sent to support! Someone should be in touch! If your matter is urgent please come back into chat.
Chat Hours:
Monday - Friday, 8:30am to 6pm ET
Thank you for your feedback!
Please fill out the form again to start a new chat.
All agents are currently offline.
Chat Hours:
Monday - Friday
8:30AM - 6PM EST
To contact us please fill out this form and we will contact you via email.