Icon colour formats and TreeViews

Hi,

I'm trying to get the icon for folders from SHELL32.DLL and using it in an image list for a TreeView, like so:-

Code:

HICON icon;
HIMAGELIST himl;

ExtractIconEx("shell32.dll", -4, NULL, &icon, 1);
himl = ImageList_Create(16, 16, ILC_COLOR8 | ILC_MASK, 1, 1);
ImageList_AddIcon(himl, icon);

The thing is, the tree view subsequently displays the XP 32-bit colour icon for it drawn in 8-bit colour, which looks icky. I want the 8-bit colour version, dammit! I know it's in there...

Times up!

I figured out the solution after reading an article on reading icons. You do it like so:-

Code:

//You need these... (not in standard Windows headers?)
#pragma pack( push )
#pragma pack( 2 )
typedef struct {
	BYTE	bWidth;               // Width of the image
	BYTE	bHeight;              // Height of the image (times 2)
	BYTE	bColorCount;          // Number of colors in image (0 if >=8bpp)
	BYTE	bReserved;            // Reserved
	WORD	wPlanes;              // Color Planes
	WORD	wBitCount;            // Bits per pixel
	DWORD	dwBytesInRes;         // how many bytes in this resource?
	WORD	nID;                  // the ID
} MEMICONDIRENTRY, *LPMEMICONDIRENTRY;

typedef struct {
	WORD			idReserved;   // Reserved
	WORD			idType;       // resource type (1 for icons)
	WORD			idCount;      // how many images?
	MEMICONDIRENTRY	idEntries[1]; // the entries for each image
} MEMICONDIR, *LPMEMICONDIR;

HGLOBAL res;
HICON icon = NULL;
HMODULE module;
HRSRC ressrc;
int i;
LPMEMICONDIR lpIconDir;
LPBYTE lpIconImage;

module = LoadLibraryEx("shell32.dll", NULL, LOAD_LIBRARY_AS_DATAFILE);
ressrc = FindResource(module, MAKEINTRESOURCE(4), RT_GROUP_ICON);
res = LoadResource(module, ressrc);
lpIconDir = LockResource(res);
for (i=0;i<lpIconDir->idCount;i++)
	if (lpIconDir->idEntries[i].wBitCount == 8 && lpIconDir->idEntries[i].bWidth == GetSystemMetrics(SM_CXSMICON))
	{
		ressrc = FindResource(module, MAKEINTRESOURCE(lpIconDir->idEntries[i].nID), RT_ICON);
		res = LoadResource(module, ressrc);
		lpIconImage = LockResource(res);
		icon = CreateIconFromResourceEx(lpIconImage, SizeofResource(module, ressrc), TRUE, 0x00030000, GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON), 0);
		break;
	}

himl = ImageList_Create(16, 16, ILC_COLOR8 | ILC_MASK, 1, 1);
ImageList_AddIcon(himl, icon);
DestroyIcon(icon);

Next step for me is getting a specific colour format of the icon the shell uses for folders (involves SHGetFileInfo)...