L_AnnGetHyperlink

#include "l_bitmap.h"

L_LTANN_API L_INT L_AnnGetHyperlink(hObject, puType, puMsg, pwParam, pLink, puLen)

HANNOBJECT hObject;	/* handle of the annotation object */
L_UINT * puType;	/* address of the variable to be updated with the hyperlink type */
L_UINT * puMsg;	/* address of the variable to be updated with the user defined message */
WPARAM * pwParam;	/* address of the variable to be updated with the value of wParam */
L_TCHAR * pLink;	/* character string containing the hyperlink string */
L_SIZE_T * puLen;	/* address of an integer variable to be updated with hyperlink string length*/

Gets the hyperlink information of the specified annotation object.

This function is available in the Document and Medical Imaging toolkits.

Parameter	Description
hObject	Handle of the annotation object.
puType	Address of the variable to be updated with the value indicating the hyperlink type. Possible hyperlink types are:
	Value	Meaning
	ANNLINK_NONE	[0x0000] Object has no hyperlink.
	ANNLINK_LTANNEVENT	[0x0001] WM_LTANNEVENT message will be sent with LTANNEVENT_HYPERLINK
	ANNLINK_USERMSG	[0x0002] The user defined message will be sent with wParam as the wParam message of this function and lParam containing the handle of the object.
	ANNLINK_RUN	[0x0003] The program specified in pLink will be run. Both the program and the command line parameters have to be specified in pLink.
	ANNLINK_WEBPAGE	[0x0004] The web page with the URL specified in pLink will be opened in the current browser. Note that not all web browsers accept a page on the command line. Some will simply go to their default home page.
puMsg	Address of the variable to be updated with the value of the user defined message. This parameter is only valid if the value pointed to by puType is ANNLINK_USERMSG.
pwParam	Address of the variable to be updated with the value of wParam. This parameter is only valid if the value pointed to by puType is ANNLINK_USERMSG.
pLink	Character string containing the hyperlink string. This parameter is valid only if the value pointed to by puType is ANNLINK_RUN or ANNLINK_WEBPAGE. If puType points to ANNLINK_RUN, pLink contains the name of the program to run and all required command line parameters. If puType points to ANNLINK_WEBPAGE, pLink contains the URL of the Web page to access.
puLen	Pointer to an integer variable (L_SIZE_T) that will be updated with the length of the hyperlink string.

Returns

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

Comments

Objects with a hyperlink of type ANNLINK_RUN or ANNLINK_WEBPAGE have a hyperlink string associated with them. To see what the hyperlink string of an object is, first call L_AnnGetHyperlink passing NULL for the pLink parameter. The length of the hyperlink string is returned in the *puLen argument. Allocate a buffer large enough to store the string and the NULL at the end, and then call L_AnnGetHyperlink again, passing the pointer to the allocated buffer for the pLink argument. Note that the length does NOT account for the null at the end of the string.

Required DLLs and Libraries

LTANN

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

Platforms

Windows 2000 / XP/Vista.

See Also

Functions:	L_AnnSetHyperlink
Topics	Annotation Functions (Document/Medical only): Hyperlinks
	Annotation Objects - Automated Features
	Implementing an Automated Annotation Program
	Obtaining Annotation Object Information

Example

For complete sample code, refer to the Annotate example.

 L_INT AnnGetHyperlinkExample(HANNOBJECT  hAnnObject)
{
   L_INT nRet;
   WPARAM   wParam;
   L_UINT   uType, uMsg;
   L_TCHAR  Buffer[2048];
   L_SIZE_T zLen;

   nRet = L_AnnGetHyperlinkLen(hAnnObject, &zLen);
   if(nRet != SUCCESS)
      return nRet;
   zLen = zLen + 1;
   nRet = L_AnnGetHyperlink(hAnnObject, &uType, &uMsg, &wParam, Buffer, &zLen);
   if(nRet != SUCCESS)
      return nRet;

   if (uType == ANNLINK_NONE)
      MessageBox(NULL, TEXT("Object has no hyperlink."), TEXT("Notice"), MB_OK);
   else if ((uType == ANNLINK_WEBPAGE) || (uType == ANNLINK_RUN))
      MessageBox(NULL, Buffer, TEXT("Message"), MB_OK);
   else
      MessageBox(NULL, TEXT("Hyperlink does not have a string.\n"), TEXT("Message"), MB_OK);
   return SUCCESS;
}