How to use 256 Color Bitmaps in ImageList (Win32 SDK solution)

-->

This is how to use 256(or 16bit, 24bit)-color bitmaps in ImageLists for ListViews, TreeViews, etc...

Usually you use something like this to load/create your imagelist:

hScreens = ImageList_LoadImage(GetModuleHandle(NULL),
 MAKEINTRESOURCE(BMP_SCREENS), 100, CLR_NONE, CLR_NONE, IMAGE_BITMAP,
 LR_LOADTRANSPARENT);

However it will always convert your bitmap to 16 colors or fail. now, simply replace it with this code:
HBITMAP hScrBM;

hScreens = ImageList_Create(100, 70, ILC_COLOR8, 0, 999);
hScrBM = LoadImage(GetModuleHandle(NULL),
 MAKEINTRESOURCE(BMP_SCREENS256), IMAGE_BITMAP, 0, 0,
 LR_LOADTRANSPARENT);

ImageList_Add(hScreens, hScrBM, NULL);

DeleteObject(hScrBM);

Of course, you can use other values instead of ILC_COLOR8 (256color): ILC_COLOR16, ILC_COLOR24, ... (see "ImageList_Create()" online help in VC++)

Hope this helps...



Comments

  • Using hi/truecolor bitmaps in imagelists (MFC solution)

    Posted by Legacy on 02/11/1999 12:00am

    Originally posted by: Bartosz Bien

    Hi,
    
    

    You can also use MFC solution to use hi/truecolor bitmaps in imagelists. The following functions
    do nearly the same that you have achieved using Platform SDK:

    CBitmap::LoadBitmap
    CImageList::Create(int cx, int cy, UINT nFlags, int nInitial, int nGrow)
    CImageList::Add
    CBitmap::DeleteObject

    In CImageList::Create, use ILC_MASK | ILC_COLOR24 (bpp as needed).

    Regards,
    Bartosz Bien

    Reply
Leave a Comment
  • Your email address will not be published. All fields are required.

Top White Papers and Webcasts

  • Live Event Date: April 22, 2014 @ 1:00 p.m. ET / 10:00 a.m. PT Database professionals — whether developers or DBAs — can often save valuable time by learning to get the most from their new or existing productivity tools. Whether you're responsible for managing database projects, performing database health checks and reporting, analyzing code, or measuring software engineering metrics, it's likely you're not taking advantage of some of the lesser-known features of Toad from Dell. Attend this live …

  • Hurricane Sandy was one of the most destructive natural disasters that the United States has ever experienced. Read this success story to learn how Datto protected its partners and their customers with proactive business continuity planning, heroic employee efforts, and the right mix of technology and support. With storm surges over 12 feet, winds that exceeded 90 mph, and a diameter spanning more than 900 miles, Sandy resulted in power outages to approximately 7.5 million people, and caused an estimated $50 …

Most Popular Programming Stories

More for Developers

Latest Developer Headlines

RSS Feeds