/// <summary>
/// Create an IconResource object to represent the icon resource in the
/// given library.
/// </summary>
unsafe public IconResource(Library library,
IntPtr pResourceName)
{
m_pName = pResourceName;
// Get the RT_GROUP_ICON resource data.
IntPtr hGroupInfo = library.FindResource(m_pName,
WindowsAPI.RT_GROUP_ICON);
IntPtr hGroupRes = library.LoadResource(hGroupInfo);
uint dwGroupResSize = library.SizeofResource(hGroupInfo);
WindowsAPI.MEMICONDIR *pDirectory = (WindowsAPI.MEMICONDIR *)Library.LockResource(hGroupRes);
// Get the RT_ICON resource data for each icon in the RT_GROUP_ICON.
m_images = new IconImage[pDirectory->wCount];
for (ushort i = 0; i < pDirectory->wCount; ++i)
{
WindowsAPI.MEMICONDIRENTRY *pEntry = GetDirectoryEntry(pDirectory, i);
m_images[i] = new IconImage(library,
new IntPtr(pEntry->wId));
}
}
/// <summary>
/// Helper function get the icon directory entry at the given index.
/// </summary>
unsafe private static WindowsAPI.MEMICONDIRENTRY *GetDirectoryEntry(WindowsAPI.MEMICONDIR * pDirectory,
ushort index)
{
WindowsAPI.MEMICONDIRENTRY *pEntry = &pDirectory->arEntries;
return(pEntry += index);
}
