How to use icon instead of bitmap for image on button in toolbar?

Question

Hello,
I am trying to use an image that has a transparent background on one of the buttons on our custom toolbar in Adobe Acrobat.
In the past we have been using the following code with Bitmaps to display the image and it has worked perfectly:
======================================================================
AVIcon icon = LoadBitmap(gHINSTANCE, MAKEINTRESOURCE(IDB_OPTIONS_LARGE));
toolButton = AVToolButtonNew(ASAtomFromString("IMGR:Options"), icon, true, false);
====================================================================
Background info on the other objects:
V0200_DATA* dataPtr = (V0200_DATA*) windowsData;
gHINSTANCE = dataPtr->hInstance;
Resource File:
IDB__OPTIONS_LARGE BITMAP "Resources\\ImageOptions_Large.bmp"
IDI_ICON1 ICON "Resources\\Image_Icon.ico"
Unfortunately, these bitmaps are not transparent and end up showing the white background instead of the transparent one.
I have tried using Icons and PNGs as my image but I have been unable to get anything to show up. Here is the code I am using to get the AVIcon:
===================================================================
AVIcon icon = LoadImage(gHINSTANCE, MAKEINTRESOURCE(IDI_ICON1), IMAGE_ICON, 0, 0, LR_DEFAULTSIZE);
===================================================================
However, no image appears on the toolbar. I am able to use LoadImage with the bitmap, but I am unable to make it transparent, even when using the LR_LOADTRANSPARENT flag.
If anyone can point me in the right direction I would greatly appreciate it!
Thanks,
Ryan

Answer 1

I got it worked with PNG file. I got transparent backgrounds in toolbar and menus.
below is my code,
HRSRC resource = FindResource(gHINSTANCE, MAKEINTRESOURCE(IDB_SAVE_21_PNG), L"PNG");
if( resource == NULL )
     //Unable to load resource
DWORD resourceSize = SizeofResource(gHINSTANCE, resource);
HGLOBAL glob = LoadResource(gHINSTANCE, resource);
LPVOID resouceArray = LockResource(glob);
ASUns8  *data = (ASUns8*)ASmalloc(resourceSize + 1);
memcpy(data, resouceArray, resourceSize);
AVIconDataRec  iconData;
iconData.dataStm  =  ASMemStmRdOpen(( char  *)data, resourceSize);
iconData.eColorFormat  =  kAVIconColor;
void * iconBundle = AVAppCreateIconBundle6(kAVIconPNG, &iconData, 1); 
AVToolButtonNew (ASAtomFromString("PFXDOC:Pfx_DocumentToolSave"),
                                        iconBundle, true, false);
Thanks & Regards
Prakash