how to set image for each item in ComboboxEx?

Question

how to set image for each item in ComboboxEx?

D.D.K-2637 966

Hi,
from this post,
I use the following code to assign an image to each item but it doesn't work ((no image is displayed)

CComboBoxEx mycombo;
CImageList m_ComboImageList;
m_ComboImageList.Create(24, 24, ILC_COLOR, 1, 1);
m_ComboImageList.Add(AfxGetApp()->LoadIcon(IDI_ICON1)); //only one. [image 24x24.ico]
fMfc_combobox_filllist(mycombo, listwchar_t); //fill list wchar_t for combobox
mycombo.SetImageList(&m_ComboImageList); //<-assign icon for all items

Am I missing something?

Thanks you!

bingbing457 40 Reputation points

2023-08-17T04:05:37.2933333+00:00

mycombo.SetImageList() only related the imagelist to the combobox control, not doing the drawing work.

2 answers

Your answer

bingbing457 40 Reputation points

2023-08-17T04:05:37.2933333+00:00

mycombo.SetImageList() only related the imagelist to the combobox control, not doing the drawing work.

Answer 1

Igor Tandetnik 1,116

SetImageList doesn't assign any icons to any items. It merely provides a list of icons that could be assigned to items. The actual assignment happens in SetItem or InsertItem, by setting COMBOBOXEXITEM::iImage and/or iSelectedImage members.

D.D.K-2637 966

Hi,
that seems to be what i'm missing , but when I downloaded 1bitmap 16.16.bmp and put the following code in the oninitdialog event, however when the form appears, everything on the combobox is empty.

INITCOMMONCONTROLSEX ix;

ix.dwSize = sizeof(INITCOMMONCONTROLSEX);
ix.dwICC = ICC_USEREX_CLASSES;
InitCommonControlsEx(&ix);

CString s;
COMBOBOXEXITEM cbei;

m_ImageList.Create(IDB_BITMAP1, 16, 0, RGB(255, 0, 255));
m_wndComboEx.SetImageList(&m_ImageList);

// Populate extended combo box
for (int i = 0; i < 25; i++)
{
    cbei.mask = CBEIF_TEXT|CBEIF_IMAGE|CBEIF_SELECTEDIMAGE|CBEIF_OVERLAY;
    cbei.iItem = i;
    s.Format(_T("Item Number %d"), i + 1);
    cbei.pszText = (LPTSTR)(LPCTSTR)s;
    cbei.iImage = (i & 0x01);
    cbei.iSelectedImage = cbei.iImage;
    cbei.iOverlay = 0;
    m_wndComboEx.InsertItem(&cbei);
}

Am I doing something wrong? Do I need to use onpaint or something to repaint?

Jeanine Zhang-MSFT 11,356 Reputation points Microsoft External Staff

2021-06-01T06:21:08.937+00:00

I tested the code you provided, when the form appears, everything on the combo box can be displayed normally.

I suggest you may refer to the Doc: Setting the Images for an Individual Item
D.D.K-2637 966 Reputation points

2021-06-01T07:01:52.363+00:00

Hi,
Strangely when I passed the m_ImageList to private variable but still doesn't appear,
I'm sure I'm missing something.
I will investigate further.

Thanks you!

Answer 2

Guido Franzke 2,191

Hello,
have a look at this example: A-Combobox-with-bitmaps
Regards, Guido

D.D.K-2637 966 Reputation points

2021-06-01T07:40:56.033+00:00

Hi,
Thanks you. this will definitely help me a lot.

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how to set image for each item in ComboboxEx?

2 answers

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