LToolbar::AddButton

#include "ltwrappr.h"

L_INT LToolbar::AddButton(uButtonRefId, pButtonInfo, dwFlags )

L_UINT uButtonRefId;	/* button ID */
const pLBUTTONINFO pButtonInfo;	/* pointer to a structure */
L_UINT32 dwFlags;	/* flags */

Adds a new button to the toolbar.

Parameter	Description
uButtonRefId	Reference to use for positioning the new button inside the toolbar.
pButtonInfo	Point to an LBUTTONINFO structure containing data for the new button.
dwFlags	Flag that indicates where to add the new button, with respect to the button specified in uButtonRefId. Possible values are:
	Flag	Meaning
	TOOLBAR_ADD_BEFORE	Add this button before the button specified by uButtonRefId in the toolbar.
	TOOLBAR_ADD_AFTER	Add this button after the button specified by uButtonRefId in the toolbar.
	TOOLBAR_ADD_TOOL	If this flag is specified, the toolkit will create a new tool and make this button the first button of the new tool.
	If this flag is not specified, the toolkit will add the new button to the same tool as uButtonRefId.
	Note, if the toolbar contains no buttons, both uButtonRefId and dwFlags will be ignored and the new tool and button will be added to the toolbar.

Comments

As an example, if dwFlags is set to TOOLBAR_ADD_BEFORE | TOOLBAR_ADD_TOOL, then a new tool will be added before the button specified by uButtonRefId. If dwFlags is set to TOOLBAR_ADD_BEFORE, then the new button will be added before the button specified by uButtonRefId and it will become part of the same tool as the button specified by uButtonRefId.

Returns

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

Required DLLs and Libraries

LTTLB

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

See Also

Functions:	LToolbar::RemoveButton, LToolbar::GetButtonInfo, LToolbar::SetButtonInfo, LToolbar::GetToolbarInfo, LToolbar::SetToolbarInfo, Class Members
Topics:	Getting and Setting Toolbar Button Information

Example

This example will create an empty toolbar and then add four buttons.

#define IDB_BITMAP1                     101
#define IDB_BITMAP2                     102
#define IDB_BITMAP3                     103
#define IDB_BITMAP4                     104
L_INT LToolbar__AddButtonExample( HWND hWnd, LToolbar* tlb)
{
   L_INT nRet;
   /*Assume that m_hWnd is a valid window handle*/
   /* Initiate the toolbar handle */
   nRet = tlb->Initialize (); 
   if(nRet != SUCCESS)
      return nRet;
   /* Check the validity of the handle */
   if ( tlb->IsValid () )
   {
      POINT pt = { 0, 0 } ;
      /* Initiate the point will be used to align the toolbar at the top-left of its owner client area */
      ::ClientToScreen ( hWnd, &pt ) ;
      /* Create the toolbar  */
      nRet = tlb->Create (hWnd, TEXT("Tools Window"), TOOLBAR_EMPTY ) ;
      if(nRet != SUCCESS)
         return nRet;
      /* assume these resource IDs contain valid bitmaps */
      const L_INT nResId[ 4 ] = { IDB_BITMAP1, IDB_BITMAP2, IDB_BITMAP3, IDB_BITMAP4 };
      const L_TCHAR *szToolTipText[ 4 ] = { TEXT("Button 1"), TEXT("Button 2"), TEXT("Button 3"), TEXT("Button 4") };
      LBUTTONINFO ButtonInfo;
      L_INT i;
      L_UINT uRefId;
      L_UINT32 dwFlags;
      uRefId = 0;  /* we dont need a reference button when adding the first one */
      for( i = 0; i < 4; i++ )
      {
         ButtonInfo.uID = i + 1;
         ButtonInfo.hBitmap = LoadBitmap( 
            (HINSTANCE) L_GETWINDOWLONGPTR( hWnd /*hWndParent*/, GWLP_HINSTANCE ),
            MAKEINTRESOURCE( nResId[ i ] ) );
         lstrcpy( ButtonInfo.szToolTipText, szToolTipText[ i ] );
         ButtonInfo.dwTag = 0L;
         ButtonInfo.fsState = TBSTATE_ENABLED;
         dwFlags = TOOLBAR_ADD_AFTER;
         if( i == 0 || i == 2 )
            dwFlags |= TOOLBAR_ADD_TOOL;
         nRet = tlb->AddButton (uRefId, &ButtonInfo, dwFlags );
         if(nRet != SUCCESS)
            return nRet;
         DeleteObject( ButtonInfo.hBitmap );  /* the toolbar toolkit keeps its own copy */
         uRefId = ButtonInfo.uID;  /* save last button ID */
      }
      /* Set the toolbar position */
      nRet = tlb->SetPosition (&pt, TOOLBAR_POSITION_TOP | TOOLBAR_POSITION_LEFT ) ;
      if(nRet != SUCCESS)
         return nRet;
      /* Show the toolbar */
      nRet = tlb->SetVisible (TRUE ) ; 
      if(nRet != SUCCESS)
         return nRet;
   }
   return SUCCESS;
}