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  • Your email address will not be published.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

  • Salesforce has been recognized by Gartner as a leader in this report for three years in a row. This graphic was published by Gartner, Inc. as part of a larger research document and should be evaluated in the context of the entire document. The Gartner document is available upon request from Salesforce.com. Gartner does not endorse any vendor, product or service depicted in its research publications, and does not advise technology users to select only those vendors with the highest ratings. Gartner research …

  • Whether you're just now developing your first mobile app, refining an existing one, or deploying multiple apps, the process for doing so can be complicated. Utilizing a Rapid Mobile Application Development (RMAD) platform can help you not only make that process easier, but also help the business reach its goals in a timely, cost-efficient manner. This eBook outlines seven key factors to consider as you choose the right RMAD platform to meet your needs, and includes a quick-reference checklist.

Most Popular Programming Stories

More for Developers

RSS Feeds

Thanks for your registration, follow us on our social networks to keep up-to-date