Using VS 2005, I have a ListView control in an ATL dialog. I am creating a image list and trying to use it for both header images and item images in the ListView control. I am doing this in the InitDialog function. When the dialog is displayed I see spaces where the images are suppose to be but they are all blank. If I use the image list to draw a icon I do see the expected image.
The code in brief to set an image in the header (from my Init Dialog) follows.
Any idea what I am doing wrong
Alicia
************* Code Outline *************
INITCOMMONCONTROLSEX iccex;
// Carries data that is used to load // control classes for the rebar // Initialize the INITCOMMONCONTROLSEX structure.iccex.dwSize =
sizeof (INITCOMMONCONTROLSEX);// Load rebar and toolbar control classes.
iccex.dwICC = ICC_LISTVIEW_CLASSES;
// Register rebar and toolbar control classes from the DLL for the // common control.InitCommonControlsEx (&iccex);
int iIconX = 16; int iIconY = 16;m_himagelist = ImageList_Create(iIconX, iIconY,ILC_COLOR, 4, 4);
ATLASSERT(m_himagelist != NULL);
// // load our standard icons //HICON hiconItem = (HICON) LoadImage(_Module.m_hInst, MAKEINTRESOURCE(IDI_BLANK),IMAGE_ICON,iIconX, iIconY,0);
iReturn = ImageList_AddIcon(m_himagelist, hiconItem);
ATLASSERT(iReturn == BLANK_ICON);
DestroyIcon(hiconItem);
//hiconItem = (HICON) LoadImage(_Module.m_hInst, MAKEINTRESOURCE(IDI_TEXT),IMAGE_ICON,iIconX, iIconY,0);
iReturn = ImageList_AddIcon(m_himagelist, hiconItem);
ATLASSERT(iReturn == TEXT_ICON);
DestroyIcon(hiconItem);
// // set extended style //ListView_SetExtendedListViewStyle(m_hwndListView,LVS_EX_SUBITEMIMAGES | LVS_EX_FULLROWSELECT);
// // connect our image list //ATLASSERT(m_himagelist != NULL);
if (m_himagelist == NULL) return FALSE;ListView_SetImageList(m_hwndListView, m_himagelist, LVSIL_SMALL);
i = ImageList_GetImageCount(m_himagelist);
ATLASSERT(i > 0);
// // 1st, clear out any entries from the previous dialog //bReturn = ListView_DeleteAllItems(m_hwndListView);
ATLASSERT(bReturn);
// // add our columns, main item first //lvcolumn.mask = LVCF_TEXT | LVCF_WIDTH | LVCF_IMAGE | LVCF_FMT;
//lvcolumn.fmt = LVCFMT_LEFT | LVCFMT_BITMAP_ON_RIGHT;
lvcolumn.cx = 100;
lvcolumn.pszText = _T(
"Name");lvcolumn.cchTextMax = 4;
lvcolumn.iSubItem = 0;
lvcolumn.iOrder = 1;
lvcolumn.iImage = UP_ICON;
iReturn = ListView_InsertColumn(m_hwndListView,NAME_COLUMN,&lvcolumn);
ATLASSERT(iReturn == NAME_COLUMN);
ListView Control displays blank images
Jemmy Wang
Adrian Raine
I see no validation code that check is LoadImage succeeded!
Maybe you have problems to load the resource!
Genesis_B
Is that still an issue
Thanks, Ayman Shoukry VC++ Teaminnes
It seems that we have the same problem too.
Could you please post the workaround.
Would be very helpful.
Thanks
mnsh
Thanks a Alicia, could you post the workaround in case somebody else runs through the same issue.
Thanks, Ayman Shoukry VC++ TeamClement Edwin
Richard Sloggett
MSD
I did some more testing today and found that the list control works correctly in a Win32 test container. If you try and use the same COM dll that contains a ListView control in a ATL dialog in a C# test container the image is missing.
I have a test app if anyone is interested.