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  • Your email address will not be published.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

  • This paper introduces IBM Java on the IBM PowerLinux 7R2 server and describes IBM's implementation of the Java platform, which includes IBM's Java Virtual Machine and development toolkit.

  • Agile methodologies give development and test teams the ability to build software at a faster rate than ever before. Combining DevOps with hybrid cloud architectures give teams not just the principles, but also the technology necessary to achieve their goals. By combining hybrid cloud and DevOps: IT departments maintain control, visibility, and security Dev/test teams remain agile and collaborative Organizational barriers are broken down Innovation and automation can thrive Download this white paper to …

Most Popular Programming Stories

More for Developers

Latest Developer Headlines

RSS Feeds