LAnnVideo::ChangeUserHandle

#include "ltwrappr.h"

virtual L_INT LAnnVideo::ChangeUserHandle(nIndex, pAnnHandle)

L_INT32 nIndex;

/* index of the user handle to change */

pANNHANDLE pAnnHandle;

/* pointer to a structure that defines how to change the user handle */

Changes properties of an existing user-defined annotation handle. This function is available in the Document/Medical Toolkits.

Parameter

Description

nIndex

Index of the user handle to change. This index is zero-based.

pAnnHandle

Pointer to a structure that defines how to change the user handle.

Returns

SUCCESS

The function was successful.

< 1

An error occurred. Refer to Return Codes.

Comments

Use this function to change the properties of an existing user-defined annotation handle.

This function is used in conjunction with the LAnnVideo::AddUserHandle and LAnnVideo::EnumerateHandles and LAnnVideo::GetUserHandles functions.

Required DLLs and Libraries

LTANN
LTMM

For a listing of the exact DLLs and Libraries needed for LTANN, based on the toolkit version, refer to Files To Be Included With Your Application.

For a listing of the exact DLLs and Libraries needed for LTMM, based on the toolkit version, refer to Files To Be Included With Your Application.

See Also

Functions:

Class Members, LAnnVideo::AddUserHandle, LAnnVideo::EnumerateHandles, LAnnVideo::EnumHandleCallBack, LAnnVideo::GetUserHandle, LAnnVideo::GetUserHandles, LAnnVideo::DeleteUserHandle, LAnnContainer::Convert, LAnnContainer::HitTestExt, LAnnContainer::RestrictCursor, LAnnotation::GetRestrictToContainer, LAnnotation::SetRestrictToContainer, LAnnotation::Define2, LAnnotation::Define

Topics:

Annotation Functions: Object Properties

 

Implementing Annotations

 

Automated User Interface for Annotations

 

Annotation Functions: Creating and Deleting Annotations

 

Types of Annotations

 

Annotation Functions: Implementing Custom Annotations

 

Annotation Functions: Creating Custom Annotations

Example

// This example changes the first user handle of an object by
// * Moving handle ten pixels to the left
// * Changing color of handle to blue
// * Changing shape of handle to square
// * Displays the hour glass cursor when mouse over the handle
L_VOID ExampleAnnChangeUserHandle(LAnnVideo *LVideo) 
{
   L_UINT uCount; 
   ANNHANDLE AnnHandle; 

   // Get the total count of user handles
   LVideo->GetUserHandles(NULL, &uCount); 
   if (uCount > 0) 
   {
      memset(&AnnHandle, 0, sizeof(ANNHANDLE)); 
      AnnHandle.uStructSize = sizeof(&AnnHandle); 
      LVideo->GetUserHandle(0, &AnnHandle); 
      
      AnnHandle.aptContainer.x +=10; 
      AnnHandle.crFill = RGB(0,0,255); 
      AnnHandle.nShape = ANNHANDLE_SHAPE_SQUARE; 
      AnnHandle.hCursor = LoadCursor(NULL,IDC_APPSTARTING); 
      AnnHandle.uFlags = ANNHANDLE_FILL_COLOR | ANNHANDLE_SHAPE | ANNHANDLE_LOCATION | ANNHANDLE_CONTAINER_COORDINATES; 
      LVideo->ChangeUserHandle(0, &AnnHandle); 
   }
   else
      MessageBox(NULL, TEXT("No User Handles!"), TEXT("Error"), MB_OK); 
}