I've been trying different methods to get a good thumbnail-capable file browser going. I had one method where I retrieved a normal 32x32 icon (this is for file types that don't support thumbnails--display their icon instead) and added it to the thumbnail imagelist. It automatically scaled to the thumbnail size. But it looked terrible.
So I found a way to get the 256,256 icons. But if no such icon exists, not only is it returning the 16,16... it's not scaling when I add it????? (it's the same image list, and there's no code to scale it, it should happen automatically)
This scales the icon to the size of the image list. hSysIL here is the normal 32,32 system image list.
However,
This returns the 16,16 icon and does not scale it, so my list displays a tiny icon. (only for items for which there is no 256 icon available. For items that have one, it works perfectly-- hSysIL256 is the 256,256 system image list).
The documentation says every icon in an image list has to be the same size, so this shouldn't even be possible. But when I click on it, it only highlights the actual icon, so it's not a tiny image on a background image, it's a legit tiny icon.
Eventually I'd like to get the 32,32 and draw a border around it like explorer. But for now I'd settle for scaling it up like normal. Or maybe a simple way to determine if a 256,256 icon exists? Or measure the size of an hIcon?
Edit: Here's a pic showing the difference. The ONLY difference in code is shown above- pointing to the 32x32 instead of the 256x256.
![]()
So I found a way to get the 256,256 icons. But if no such icon exists, not only is it returning the 16,16... it's not scaling when I add it????? (it's the same image list, and there's no code to scale it, it should happen automatically)
Code:
iIcoIdx = GetFileIconIndexPIDL(pidlfqChild, SHGFI_LARGEICON)
hIcon = ImageList_GetIcon(hSysIL, iIcoIdx, ILD_NORMAL)
lRtn = ImageList_AddIcon(hIML_Thumb, hIcon)However,
Code:
iIcoIdx = GetFileIconIndexPIDL(pidlfqChild, SHGFI_LARGEICON)
hIcon = ImageList_GetIcon(hSysIL256, iIcoIdx, ILD_NORMAL)
lRtn = ImageList_AddIcon(hIML_Thumb, hIcon)The documentation says every icon in an image list has to be the same size, so this shouldn't even be possible. But when I click on it, it only highlights the actual icon, so it's not a tiny image on a background image, it's a legit tiny icon.
Eventually I'd like to get the 32,32 and draw a border around it like explorer. But for now I'd settle for scaling it up like normal. Or maybe a simple way to determine if a 256,256 icon exists? Or measure the size of an hIcon?
Edit: Here's a pic showing the difference. The ONLY difference in code is shown above- pointing to the 32x32 instead of the 256x256.
